Air Pressure Regulator Valve- China Factory Suppliers Manufacturers

Air source treatment is the component working by using  the pressure of the gas or the expansion of the force.  It Includs air filter, pressure regulating valve, oil lubricator, etc.  Pneumatic products are widely used in metallurgical mechanical and electrical, construction, transportation equipment, home appliances, light industry, machine tools, medical, packaging industry and other industries automation production.  However, because the compressed air can not be directly used t, it contains a certain amount of moisture, oil and dust. After compression, the air temperature is as high as 140-170℃, and some of the water and oil have become gaseous.  Therefore, it is necessary to use the compressed air after purification treatment to run the mechanical equipment.  

The air source treatment includes air filter, pressure reducing valve and oil lubricator. Some companies’ solenoid valve and cylinder can do oil-free lubrication (lubricating air by grease), which does not need to use oil mist device.  The filtration degree is generally 50-75μm, the pressure regulating range is 0.5-10MPa, if the filtration accuracy is 5-10μm, 10-20μm, 25-40μm, and the pressure regulating is 0.05-0.3Mpa, 0.05-1Mpa three large pieces of no pipe connected components called three coupling.  The three components are indispensable air source devices in most pneumatic systems. They are installed near the gas equipment and are the final guarantee of compressed air quality.  The installation sequence of the three pieces is air filter, pressure reducing valve and oil mist device according to the inlet direction.  The combination of air filter and pressure reducing valve are called pneumatic coupling.  We can also set air filter and pressure reducing valve together, it becomes a filter regulator (function and air filter and pressure reducing valve combined with the use of the same). Oil mist in the compressed air is not allowed in some occasions. It is necessary to use the oil mist separator to filter out the oil mist in the compressed air.  In summary, these components can be selected as needed, and they can be used in combination.  The air filter is used to clean the air source. It can filter the moisture in the compressed air and avoid the moisture entering the device with the gas.  The pressure reducing valve can stabilize the pressure of the air source, so that the air source is in a constant state, and the damage to the hardware such as the valve or actuator can be reduced due to the sudden change in the air pressure of the air source.  The filter is used to clean the air source. It can filter the water in the compressed air and avoid the water entering the device with the gas.  The oil mist can lubricate the moving parts of the machine body, and can lubricate the parts that are not convenient to add lubricating oil, thus greatly prolonging the service life of the machine body.

Advantages of pneumatic components:  

1. Pneumatic device is simple in structure, light and easy to install and maintain.  The medium is air, which is not easy to burn compared with the hydraulic medium, so it is safe to use.  

2, the working medium is inexhaustible air, air itself does not cost money.  Exhaust treatment is simple, no pollution to the environment, low cost.  

3. It is very easy to adjust the output force and the working speed.  The speed of the cylinder is generally less than 1M/S, which is faster than the speed of the hydraulic and electrical modes.  

4, high reliability, long service life.  The service life of effective action of electrical components is about one million times, and the life of the general solenoid valve is more than 30 million times, some good quality valves more than 200 million times.  

5, air compressibility can store energy, to achieve centralized air supply.  The energy can be released in a short time to obtain a high speed response in intermittent motion.  It can be buffered.  Strong adaptability to impact load and overload.  Under certain conditions, the pneumatic device can be self-sustaining.  

6, full pneumatic control is with fireproof, explosion-proof, moisture-proof ability.  Compared with hydraulic mode, pneumatic mode can be used in high temperature occasions.  

7, because the air flow loss is small, compressed air can be centralized supply, long-distance transportation.

Disadvantages of pneumatic components  

1, because the air has compressibility, the speed of the cylinder is subject to changes in load.  This defect can be overcome by gas-liquid linkage.  

2. When the cylinder is moving at low speed, the low speed stability of the cylinder is not as good as that of the hydraulic cylinder due to the large proportion of friction in the thrust.  

3, although in many applications, the output force of the cylinder can meet the work requirements, but its output force is smaller than the hydraulic cylinder.  

Dear all friends and customer,

Happy Chinese New Year

We BLCH pneumatic Team

wish you lucky in the year of OX

safety & peace all the year round

Good health &Vitality

Flourishing wealth & fortune

we will come back from holiday after 20th Feb.  Thanks for your support in the new year!

CONGLATULATION!

The "Internal Pilot Guide of the Precision Pressure Reducing Valve" standard  which was lead drafted by our company has been approved by the Zhejiang Product Quality Association as the "Quality Criterion" for  the zhejiang manufacturing  groups' standard, the Code Number is T/ZZB 1619-2020, which will be implemented from July 30, 2020.

Description of filter working principle:

The compressed air from the inlet is strongly rotated through the tangential gap of the guide plate. The liquid oil, water and solid pollutants are thrown to the inner wall of the cup by centrifugal force, then flow to the bottom.

The compressed air has removed the liquid oil, water and large particle impurities, and further removes the small particles through the filter element, then flows out from the outlet.

The baffle prevents the liquid oil and water below from being swept back into the airstream. The condensed water accumulated in the cup can be discharged from the drain by pressing the manual button.

You may still will encounter many problems in the actual use process, even fully understanding the working principle.

TIPS1: replace the filter element in time

When the pressure difference between the air inlet and the air outlet is greater than 0.1MPa, or the service time is more than 2 years. Be sure to replace the filter element!

Tips 2: Distinguish between normally open and normally closed drains

There are automatic drain and manual drain, normally people prefer automatic drain. There are two kinds of drainage specifications for automatic drainage: normally open and normally closed.

But normally open is not equal to normally leaky

Tips 3: Installation required

Pre-blow before assembling, to prevent debris, dust, and sealing materials mixed into the compressed air.

The inlet and outlet can not be installed in reverse. And filter need to be installed vertically, with cup downward and make space for maintenance.

The front section of the filter should be equipped with a choke valve for maintenance.

The drain pipe should be secured to prevent the discharge speed from being too fast during the drainage process, which may cause the pipe to swing and injure people.

Tips 4: Strengthen the maintenance

Check the cup regularly for cracks, to prevent cracking and hurting people.

Ordinary cup is made of carbonate polyester. It need to avoid being used with organic solvents and chemical fumes. If you have to, choose a nylon or metal cup. And metal cup is necessary at high temperature.

Avoid the sunshine when using it.

Since the second quarter of last year, with the recovery of global trade, international shipping prices continue to climb, constantly refresh the “record.”  In the first half of 2021, shipping prices continued to “rise”, and professional agencies predict that the trend will continue in the third quarter.  

China’s shipping industry is in the best recovery period in history, and the country’s shipping market is expected to continue to pick up in the third quarter of 2021, according to a new report released by the Shanghai International Shipping Research Center on July 5.  At the same time of capacity increase, freight rates will also usher in a new round of rising prices.  

According to Zhou Dequan, director of Shipping Development Research Institute of Shanghai International Shipping Research Center, in the third quarter of 2021, the climate index and confidence index of shipping related enterprises will still remain above the scenery line. Among them, China’s shipping climate index is expected to be 121.00 points, down 5.40 points compared with the second quarter, maintaining in the relatively prosperous range.  China’s shipping confidence index is expected to be 162.73 points, down 1.46 points compared with the second quarter, still maintaining in a strong climate range.  Chinese shipping industry thaw trend is visible from this spot.  

In the second quarter of 2021, China’s shipping climate index reached 126.39 points, a new record high since the release of the index.  China’s shipping confidence index was 164.20 points, basically flat with the first quarter, maintaining in a strong climate range.  

Shipping enterprises continue to increase the delivery of shipping capacity  

In the second quarter of 2021, the shipping capacity of shipping enterprises continued to increase, the utilization rate of shipping space continued to rise, and the freight income increased significantly.  In spite of the significant increase in operating costs, the company still maintains a strong profit;  Loan liabilities continue to reduce, labor demand increased substantially, working capital is very comfortable, enterprise financing is relatively easy, shipowners’ willingness to invest in transport capacity continues to strengthen, enterprise risk resistance ability rises steadily.  

The report shows that in the second quarter, the climate index of shipping enterprises is 132.70 points, 12.85 points higher than that of the first quarter, entering a relatively climate range.  The confidence index of shipping enterprises was 168.66 points, down 4.96 points compared with the first quarter, but still maintained in the strong climate range, indicating that entrepreneurs have sufficient confidence and are optimistic about the future prospects.  

Container transport companies in the second quarter made a big profit, entrepreneurs are full of confidence in the future business, optimistic about the market.  In the third quarter, the climate index of container transport enterprises is expected to be 136.09 points, and the confidence index is expected to be 168.31 points, both entering the relatively climate range.  

After making profits from the second half of 2020 to date, shipping companies said in the third quarter that they will continue to increase the launch of ship capacity.  According to the survey conducted by China Shipping Climate Index Compilation Office of Shanghai International Shipping Research Center on the planned new shipping capacity of shipping enterprises in the next quarter, 18.63% of the enterprises said that they expected the new shipping capacity to increase by more than 20% compared with the second quarter.  25.49% of the enterprises said they expected the new capacity to increase by 10%~20% compared with the second quarter;  36.27% of the enterprises said they expected the new capacity to be basically the same as the second quarter;  17.65% of the enterprises said they expected the new capacity to drop by 10% to 20% compared with the second quarter.  1.96 percent of enterprises said they expected new capacity to drop by more than 20 percent from the second quarter.

One of the important parts of the pneumatic components is the cylinder. In order to ensure the normal use of the cylinder and avoid unnecessary situations, for the use of the pneumatic components and cylinder, let’s check the right way to use cylinder. When using the cylinder, the air quality requirements are very high. Clean, dry compressed air should be used. The air should not contain organic solvents, synthetic oils, salts, corrosive gases, etc., in order to avoid bottle and valve failure.