9 Jan 12

air compressor working principle

Air compressors collect and store air in a pressurized tank, and use pistons and valves to achieve the appropriate pressure levels within an air storage tank that is attached to the motorized unit. There are a few different types of piston compressors that can deliver even air pressures to the user.
Automotive compressors are combustion engine compressors that use the up-and-down stroke of the piston to allow air in and pressurize the air within the storage tank. Other piston compressors utilize a diaphragm, oil-free piston. These pull air in, and pressurize it by not allowing air to escape during the collection period.
These are the most common types of air compressors that are used today by skilled workers and craftsmen. Before the day of motorized engines, air compressors were not what they are today. Unable to store pressurized air, a type of antique air compressor may be found in the blacksmith’s foundry bellows.
Now the air compressor is capable of building extreme pressures in storage tanks capable of storing enormous amounts of pressurized gases for industrial use.
Capacity:
The capacity of an air compressor is determined by the amount of free air (at sea level) that it can compress to a specified pressure, usually 100 psi per minute, under the conditions of 68°F and a relative humidity of 38 percent. This capacity is expressed in cubic feet per minute (cfm) and is usually included in the nomenclature of the compressor.
The number of pneumatic tools that can be operated at one time from an air compressor depends on the air requirements of each tool; for example, a 55-pound class rock drill requires 95 cfm of air at 80 psi. A 210-cfm compressor can supply air to operate two of the drills, because their combined requirements is 190 cfm.
However, if a third such drill is added to the compressor, the combined demand is 285 cfm, and this condition overloads the compressor and the tools and results in serious wear.
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9 Jan 12

high pressure air compressor

High pressure air compressor  

  1. The compressor can remove waste and dirt automatically by after cooling system. High-quality air out ed with a special, highly effective air cooling chiller of advanced design.
  2. Market leader “Herbiger” main air valve with large capacity. Its high efficiency characteristic ensures the stable running of the compressor.put due to economical dirt removal system in 3 stages.
  3. The compressor is equipped with a special,highly effective air cooling chiller of advanced design.

 

Specification for high pressure air compressor

Model Capacity

M3/min

 Working pressure

Mpa

 Motor

KW

 Speed

rpm

 Dimension

mm

 Weight

KG
VH-0.65/35 0.65 3.5 7.5 800 1250*760*800 475
WH-1.1/35 1.1 3.5 11 900 1420*830*840 475
WH-1.0/40 1.0 4.0 11 790 1420*830*840 550
WH-1.7/40 1.7 4.0 22 735 1140*71081500 550
WH-2.0/40 1.9 4.0 25 860 1140*735*1600 550
2-WH-2.2/35 2.2 3.5 2*11 800 1880*1430*1000 1500
4-WH-4.0/40 4.0 4.0 4*11 790 2020*1570*2000 2400
6-WH-6.0/40 6.0 4.0 6*11 790 3495*1565*2000 3600
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16 Dec 11

Different type of air compressor

Air compressors have been used in industry for well over 100 years because air as a resource is safe, flexible, clean and convenient. These machines have evolved into highly reliable* pieces of equipment
that are almost indispensable in many of the applications they serve. Compressors can come in a wide variety of different types and sizes.
Reciprocating or Piston compressors are the most common machines available on the market. They are positive displacement compressors and can be found in ranges from fractional to very high horsepowers. Positive displacement air compressors work by filling an air chamber with air and then reducing the chamber’s volume (Reciprocating, Rotary Screw and Rotary Sliding Vane are all positive displacement compressors). Reciprocating compressors work in a very similar manner as does as internal combustion engine but basically in a reverse process. They have cylinders, pistons, crankshafts, valves and housing blocks.
Rotary Screw Compressors work on the principle of air filling the void between two helical mated screws and their housing. As the two helical screws are turned, the volume is reduced resulting in an increase of air pressure. Most rotary screw compressors inject oil into the bearing and compression area. The reasons are for cooling, lubrication and creating a seal between screws and the housing wall to reduce internal leakage. After the compression cycle, the oil and air must be separated before the air can be used by the air system.
Rotary Sliding Vane Compressors like Reciprocating and Rotary Screw compressors are positive displacement compressors. The compressor pump consists primarily of a rotor, stator, and 8 blades. The slotted rotor is eccentrically arranged within the stator providing a crescent shaped swept area between the intake and exhaust ports. As the rotor turns a single revolution, compression is achieved as the volume goes from a maximum at the intake ports to a minimum at the exhaust port. The vanes are forced outward from within the rotor slots and held against the stator wall by rotational acceleration. Oil is injected into the air intake and along the stator walls to cool the air, lubricate the bearings and vanes, and provide a seal between the vanes and the stator wall. After the compression cycle, the oil and air must be separated before the air can be transferred to the air system.
Centrifugal Compressors are not positive displacement compressors like the Reciprocating, Screw or Vane Compressors. They use very high speed spinning impellers (up to 60,000 rpm) to accelerate the air then diffuser to decelerate the air. This process, called dynamic compression, uses velocity to cause an increase in pressure. In most Centrifugal compressors, there are several of these impeller/diffuser combinations. Typically, these machines have intercoolers between each stage to cool the air as well as remove 100% of the condensate to avoid impeller damage due to erosion.
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16 Dec 11

PET Bottle

PET bottles

overviewpolyethylene terephthalate (PET) is one of themost commonly used food grade packaging plastics due to it’s chemical inertness and appealing physical properties. as with most plastics PET is derived from oil and is formed
by a polymerisation reaction between an acid and an alcohol. its initial uses were as a synthetic fibre with excellent wash and wear properties as well as a substrate for video, photographic and x-ray film. as its use grew
PET was modified for application in injection moulded and extruded products, and in the early 1970’s the first three dimensional structures were produced by blow moulding techniques, initiating the rapid adoption of PET
as a material for beverage bottles. Its properties as a lightweight, tough material with
excellent optical properties and adequate gas barrier performance for the retention of PET bottles are manufactured by the process of injection stretch blow moulding (read more at http://www.bpf.co.uk) which was developed
specifically to maximise the beneficial properties of PET.

bottled water is the fastest growing beverage industry in the world. according to the international bottled water association (IBWA), sales of bottled water have increased by 500 percent over the last decade: 1.5 million tons of plastic are used to bottle water every year. plastic bottle recycling has not kept pace with the dramatic
increases in virgin resin PET sales, particularly for PET bottles. It is interesting to note how the
last imperative in the ecological triad of reduce/ reuse / recycle, has emerged as the one given prominence. the consequences of demanding an emphasis on the first – reduction of consumption and production – puts one on the
path of confrontation with a system which is seeking to function at maximum capacity, not minimum.

most of the increase in virgin resin sales has been for single-serve PET soda bottles that now make up 60 percent of the soda bottle market share. the 50cl form is particularly suited to the out-of-home circuit, in particularthe on the go market, and as a result is mostly disposed of in general waste bins and eventually dumped in a landfill or incinerated.in a seven year period up to 2002, britain’s consumption of PET bottles has about doubled
mostly due to small single-serve bottles,whereas the rate of recycling for the samehad dropped by a third. Less than 6% of plastic from the US’s municipal waste was recovered in 2005.

in 1980 the US recycled only 9.6% of it’s municipal waste, today that has risen to 32%. at 27% britain’s recycling rate is low but rapidly improving, having nearly doubled in the last three years. austria and the netherlands
currently recycle 60% or more of their municipal waste and are setting the global example. as the volume of plastic waste hasin creased so have our recycling efforts. or is it because of our increased awareness and efforts to recycle that we have become complacent, consume more and produce more waste? even those active in administering
recycling programs have come to recognize,for instance, that plastics consumption is actually encouraged by recycling! the notion,that recycling even a little is better than nothing produces only more illusions, not environmental sanity. mad levels of production and consumption are at the core of market economies, and unless that process isconfronted, little will change!

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6 Dec 11

How to choose suitable air compressor?

So you are scoping out air compressors and feel really a little bit overwhelmed by your choices. That exists more than one popular trademark declaring just how well-performing their own compressors are undoubtedly and the majority of these have comparable selections. Just how do you make a choice? This is when testimonials can come in really practical. You might be just looking for home use or if you have got a business to run, customer reviews can give you an up close as well as fair look at the providers plus selections you’ll find in shops. Each of these critical reviews allows you to come up with a far more smart pick plus actually acquire the item perfect for you.

Just where Do You Find Sitable Air Compressor

Through the internet. The most effective resources to find these opinions is most likely the Cyberspace. Seeking out critical reviews on bing or perhaps Aol generates a group of Online resources having air compressor reviews of diverse sorts of air compressors. When searching for further info regarding a specific air compressor brand as well as machine, just like the le roi dresser, only include that parameter while searching. The beauty of the Internet is that you don’t need to rely upon merely the product’s Web-site for facts. Users such as you also can submit specifics. So as you may need to read through many web sites to discover what you need and to find a web-site having good information, it will help you receive the details you want to build a smart decision.

Web Site Customer Reviews. A lot of online retailers let shoppers write-up their own ratings and critical reviews of the goods presented on their own Site. Each of these relatively honest reviews will offer helpful insight into how superior, or not so excellent, an item is. Plenty of purchasers submit both the advantages and drawbacks of the product or services, and this includes any sort of troubles they may have had using it. So in case you need to know exactly how good this Husky on board belt-driven compressor will work soon after a lot of uses, look at a few air compressor reviews to reveal the truth. Depending upon what products you’re looking at, you might without a doubt come across both everyday consumer and specialist views. Averaging out the reports can provide you with an improved view of exactly how practical the air compressor will be.

In Print Reviews. A large number of magazines and catalogs, consumer driven as well as business, continually review goods focused on their audience. Those air compressor reviews are every now and then really in-depth and also made with the intention of helping you to choose between goods. Some might not at all times turn out to be as unbiased as Web page customer reviews, but can also still show device data that you may not discover anywhere else, like specifics of replacement unit tanks as well as materials. You can even locate exclusive editions which concentrate a good portion of an topic on a specific device, taking care of all of the facets.

Whatever you plan to utilize your air compressor for – tire blowing up or perhaps running a sander – user reviews on the Net, provided by Web site buyers, as well as in magazines might be the best guide to finding out which trademark and design works best. Research before you buy and utilize air compressor  in order to create the best pick.

Here I give some website to log in, there are some high pressure and high quality with CE and ISO. Hope that can be helpful to look for suitable products.

www.everstrong.com.cn

www.nj-hengda.com

 

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16 Apr 11

New product picture of high pressure compressor

THE NEW PICTURE OF WH-1.0/40

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21 Mar 11

Chinaplas 2011 in Gungzhou

We have take part in Chinaplas 2011– Asia’s No.1 Plastics & Rubber Trade Fair

Date:17-20.5.2011

Venue:China Import & Export Fair Pazhou Complex,Guangzhou, PR China

Welcome to visit our booth:Hall 11.1-Q09

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10 Dec 10

diesel screw air compressor

PET ALL PET Star compressors and downstream accessory equipment are not designed, intended or approved for breathing air applications. PET ALL PET Star does not approve specialized equipment for breathing air applications and assumes no responsibility or liability for compressors use for breathing air service.

Nothing contained in this brochure is intended to extend any warranty or representation, expressed or implied regarding the products described herein. Any such warranties or other terms or condition of sale of products shall be in accordance with PET ALL PET Star’s standard terms and comditions of sale for such products, which are available upon request.

Product improvement is a continuing goal at PET ALL PET Star, Designs and specifications are subject to change without prior notice or obligation.

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18 Nov 10

New product of Screw air compressor

Fully automatic load and unload. Compressor will start automatically and shut down under the following conditions:

-          When the target pressure in the air tank has been reached

-          When the voltage drops below a thrashold

-          In an over-pressure condition

-          When the temperature reaches a protection setpoint

●High-quality European technology and components (GHH-Rand and SKF)

●M-H air filter with long-life capability.(4000 hours+), easy for maintenance and replacement.

●M-H oil filter, filtration density 10 micron (99.9% efficiency) and long-life capability (4000 hours+).

●M-H air-oil separator, particle count below 3 ppm

●Control system: All parts are by Schneider in France.

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9 Nov 10

two stage air compressor

Two stage high pressure air compressor （2级高压） 

The compressors under this series are widely used PET bottle blowing.

The compressor delivers outstanding quality under all weather conditions

An automatic unload system to ensure that the system starts safely without residual pressure. This feature protect s both frame and motor and so extends the working life of all components.

This equipment does not require a foundation saving plant installation costs

Specification for high pressure air compressor

Model CapacityM3/min Working pressure Mpa MotorKW Speedrpm Dimensionmm WeightKG
VH-0.7/30-SB 0.7 3.0 7.5 680 1240*630*780 310
WH-1.0/30-SB 1.0 3.0 11 600 1470*780*885 430
WH-1.2/30-SB 1.2 3.0 15 760 1470*780*885 450
WH-1.5/30-SB 1.5 3.0 18.5 680 1530*765*1105 520
VH-0.65/35 0.65 3.5 9 800 1800*630*1400 420
VH-0.7/30 0.7 3.0 7.5 680 1800*630*1400 410
VH-1.0/30 1.0 3.0 11 600 2005*795*1260 550
WH-1.1/35 1.1 3.5 11 605 2005*795*1260 550
WH-1.2/30 1.2 3.0 15 760 2005*795*1260 550
WH-1.3/35 1.3 3.5 18.5 680 1140*735*1450 520
WH-1.5/30 1.5 3.0 18.5 680 1140*735*1450 520
2-WH-2.0/30 2.0 3.0 2*11 600 1880*1180*1440 1050
2-WH-2.2/35 2.2 3.5 2*15 605 1880*1180*1440 1080
2-WH-2.4/30 2.4 3.0 2*15 760 2050*1570*980 1080
2-WH-2.6/35 2.6 3.5 2*18.5 700 1880*1180*1440 1150
2-WH-3.0/30 3.0 3.0 2*18.5 760 1880*1180*1440 1150
3-WH-3.6/30 3.6 3.0 3*15 700 2350*1570*1880 1580
4-WH-5.0/3.5 5.0 3.5 4*18.5 680 2520*1920*1540 2400
4-WH-6.0/30 6.0 3.0 4*18.5 790 2520*1920*1540 2400
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