Air Filter Regulator- Manufacturers Factory Suppliers From China

BLCH Pneumatic Science and Technology Co. Ltd was founded in August 2004, it is located in the YUEQING economic development industrial zone. The company covers an area of 24000

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Post time:        May-21-2022

Compressed Air Supply

Adequate sizing of compressors and feed lines is the first place to start to ensure proper system operation. Consistent plant air pressure with suitable flow allows pneumatic devices to operate as designed, as low or varying air pressure can negatively impact the final product and overall machine sequence. For example, a manufacturing plant was experiencing low air pressure in its facility at the end of the day shift, causing one of the machines to fault due to low air pressure in its pneumatic actuation system. The problem was found to be high-volume air consumers nearby, namely blow guns being used to clean machines at the end of each day. Insufficient capacity at the air compressor, or undersized plant air supply tubing and piping is a common issue and one to look out for. If air consumption is a major concern for your factory, check out our Interactive Air Consumption Calculator here.

Air Flow Control

Once consistent and correct pneumatic system air pressure and flow is established, plant supply air should be connected to a manual, lockable air dump valve at each use point. This lockout, tag-out capability is important for isolating a machine—or a module of a large machine—for changeover, maintenance or tooling changes. A filter regulator should also be installed at the air dump valve. The filter removes dust particles and water that can cause wear and operation problems for pneumatic system components. A regulator is required to throttle to the design air pressure at the use point, typically 60 to 90 psi, as the plant air supply is usually higher, about 100 to 130 psi. Operating at the design pressure as opposed to plant pressure will reduce wear on pneumatic components.

An electric soft start valve downstream of the regulator allows air pressure to gradually increase at start-up, preventing sudden banging or slamming of cylinders at power up. This is especially important if 4-way, 2-position valves are used because a 2-position valve spool maintains its position after power off and the removal of air. When power and air is reapplied, air will return to the cylinder. If all air was exhausted, no air is available on the other side of the cylinder. This makes speed control with flow controls non-functional. The uncontrolled speed of the cylinder could cause a high-speed stroke, commonly ending with a bang. When soft start valves are correctly applied, a machine will typically return to its home position slowly and smoothly at power up.

Lubricators should be used sparingly and only when necessary. Most modern pneumatic components come lubricated from the factory and do not need oil. However, pneumatic motors on air tools and other equipment do require a lubricator and one should be supplied in these instances.

Cylinder Types

Pneumatic cylinders are a popular way to clamp, position and transfer parts in automated equipment and although there are many types of cylinders, their construction is fairly similar from one to another. Take a moment and review the Pneumatic Cylinders article to get a basic understanding of what cylinders are and how they operate. Understanding the basics helps to know how different applications affect the cylinder and piston rod.

Cylinder Sizing

The load is the primary consideration when determining cylinder type and piston size. The piston area (force factor) multiplied by the air pressure in the cylinder gives the available force. A general rule is to select a force factor that will produce a force 25% greater than the load to help compensate for friction and losses. Pneumatic systems are quite forgiving in terms of oversizing, but using components that are too big adds unnecessary expenses in terms of both purchase price and energy consumption.

The bore size (force factor) determines force at a given pressure. The operating pressure, which in a plant can typically range from 10 to 150 psi, is the first consideration when selecting a bore size. The next step in choosing the bore size is the amount of force that the application requires. Suppliers often provide charts to assist with calculating bore size. If the bore diameter is between sizes, fluid-power experts recommend rounding up to the next size. It’s also important to remember the bore diameter squares the thrust delivered. For example, a two-inch diameter cylinder has four times the power of a one-inch diameter unit. Therefore, doubling the bore quadruples the thrust.

In addition to load, designers must also take into account the speed at which the load will move. When compressed air flows through a system, there are pressure losses due to friction against the tube wall, flow around bends, and restrictions in valves and fittings (to name a few issues). Higher speeds result in greater pressure loss as the air must flow faster through the valves, tubing and ports. Attaining higher speeds also requires that the cylinder deliver more force in a shorter amount of time. A force that exceeds the load by 50% or more may be required to reliably move a load at high speeds. For example, a typical air compressor might supply air to a system at 100 psi. In an application with a slow-moving load, the actual pressure available at the piston might be reduced to no less than 90 psi. With that same load moving at a much faster rate, the available pressure could drop as low as 70 psi.

Pressure losses can be remedied by increasing pressure, but this must be done with caution: Too much pressure creates stress on the cylinder and could possibly damage the cylinder, as well as the load. In these instances, it’s better to go with a larger cylinder. Also keep in mind that raising system pressure means the compressor must work harder, increasing energy consumption of the overall pneumatic system.

(From Internet)

Select the correct cylinder according to the following conditions:

1. According to the type of cylinder:

Choose the type of cylinder according to the working requirements and conditions.  Use a heat-resistant cylinder in a high temperature environment.  In a corrosive environment, the use of corrosion – resistant cylinder.  Install a dust cover on the protruding end of the piston rod in harsh environments such as dust.  When no pollution is required, the cylinder without oil or oil lubrication should be selected.

2, according to the size of the force:

According to the size of the load force to determine the cylinder output thrust and tension.  In general, the acting force of the cylinder required by the theoretical equilibrium condition of uniform external load is multiplied by the coefficient 1.5~2.0, so that the output force of the cylinder is slightly surplus.  The cylinder diameter is too small, the output force is not enough, but the cylinder diameter is too large, so that the equipment is cumbersome, the cost increases, and increases the consumption of gas, waste energy.  In the fixture design, should try to use the expansion mechanism, in order to reduce the cylinder size.

3. According to the stroke of the piston:

And the use of the occasion and the stroke of the mechanism, but generally do not choose full stroke, to prevent the piston and cylinder head collision.  If used for clamping machine structure, it should increase the allowance of 10~20mm according to the calculation required stroke.  It should be selected as standard trip as far as possible to ensure the supply speed and reduce the cost.

4. According to the movement speed of the piston:

Mainly depends on the cylinder input compressed air flow, cylinder inlet and exhaust port size and pipe diameter.  High speed motion is required.  The cylinder movement speed is generally 50~1000mm/s.  For high-speed motion of the cylinder, the intake pipe of large internal passage should be selected;  For the load changes, in order to get slow and steady speed, can choose with throttle device or gas-liquid damping cylinder, it is easier to achieve speed control.  When selecting throttle valve to control the cylinder speed, note that: when the horizontally installed cylinder pushes the load, it is recommended to use exhaust throttle speed regulation;  When vertically installed cylinders lift loads, it is recommended to use intake throttle speed regulation;  When the stroke is required to move smoothly to avoid impact, the cylinder with buffer device should be selected.

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Post time:        Nov-20-2021

Fitting material

When deciding how to choose the correct pneumatic fittings for your application, you should examine the different materials that are commonly used in order to determine their different physical properties, gas compatibility, and reaction to, for example, temperature changes.

For specialised environments, enhanced fittings can be engineered with additional protections such as integral lining, surface coating or plating, or special insulation.

From Internet

1. There are two ways of filter drainage: differential pressure drainage and manual drainage.  Manual drainage must be discharged before the water level reaches the level below the filter element.

2. When adjusting the pressure, please pull up and rotate the knob before turning it, and press the knob for positioning.  Rotate the knob to the right to increase the outlet pressure, rotate to the left to lower the outlet pressure.  Pressure adjustment should be gradually and evenly adjusted to the required pressure value, should not be adjusted in one step.

3, the use of oil feeder: oil feeder using JIS K2213 oil (ISO Vg32 or the same oil).  Please fill no more than eight full cups.  The number 0 indicates the minimum amount of oil and 9 indicates the maximum amount of oil.  Cannot rotate from position 9-0, must rotate clockwise.  A. According to the pipe diameter, flow size, pressure regulation, filtration accuracy and other technical performance parameters, select the air components needed by the system;  ?

B. The filter precision of air filter is 2um, 5um, 10um, 20um, 40um, 70um, 100um seven, according to the quality requirements of the air to choose the appropriate products;

C. When using the pressure reducing valve, try to avoid using the lower limit value of the pressure regulating range, choose the appropriate pressure reducing valve according to the requirements of the use of pressure;

D. Installation sequence: from the inlet end of the air source, connect the air filter, pressure reducing valve and oil mist at one time. The arrow direction on the component shell is the direction of air flow, and no reverse connection is allowed;

E. Air filter and oil mist must be installed vertically with the cup side down;

F. Once the oil mist is countercurrent, it will cause damage and danger to the internal parts, so it should be avoided;

G. During installation and connection, do not mix any impurities such as sealing tape and rust into the pipes.

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Post time:        Sep-13-2021

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.