We not only will try our greatest to supply outstanding services to every shopper, but also are ready to receive any suggestion offered by our buyers forStainless Steel Solenoid Valve, Pneumatic Circuit Components, Foot Pedal Air Valve, We are keeping chasing WIN-WIN situation with our clients. We warmly welcome clients from all over the world coming over for a visit and establishing long term relationship. The product will supply to all over the world, such as, Lebanon, Afghanistan, United Arab Emirates, Singapore, India, Myanmar, Upon today, we've customers from all over the world, including USA, Russia, Spain, Italy, Singapore, Malaysia, Thailand, Poland, Iran and Iraq. The mission of our company is to provide the highest quality products with best price. We've been looking forward to doing business with you.
Warm congratulations to BLCH Pneumatic Technology Co., Ltd. won the Ministry of Industry and Information Technology of the fourth batch of specialized special-new“ small giant enterprise.
In 2004, due to the persistence of the pneumatic industry, we established BLCH Pneumatic & Technology Co., Ltd. Suddenly looking back, BLCH has gone through 19 years of glorious process, has become a giant tree from a seed, standing at the forefront of China's pneumatic industry. Here, we would like to express our deep gratitude to our country, our partners and the support from all our social friends. Thank you for wholehearted assistance.
Over the past 19 years, BLCH people have stepped forward step by step to a career ladder with the tenacious spirit of struggle and the strong support of all walks of life. They have embarked on the road of specialization, refinement and internationalization, and are determined to build the strongest manufacturer of pneumatic products and the most influential and valuable professional brand in China.
Facing the ups and downs of the external environment, BLCH will never forget its original intention, adhere to the strategic policy of "three advances, two promotion and two goals" in line with the reverence for the natural environment and the pursuit of the ultimate products and services, take "building world-class aerodynamic products" as the enterprise goal, take "Love, Learn, Innovate, Comprehend" as the enterprise concept, strive for employees, communities, partners and sustainable human development; strive to become the world's first-class,top pneumatic company !
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.
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.
Even when a cylinder is sized properly, it may stroke too fast and require use of a flow control, typically by controlling flow of air leaving the cylinder. This also reduces noise problems caused by cylinders banging and reduces rapid exhaust racket. These flow controls are typically mounted directly to the cylinder, but can also be mounted inline near the cylinder, or at the valve if the hose between the valve and cylinder is less than about 3 feet.
Specifying cylinders with built-in cushions can help provide long-term performance in high-speed pneumatic motion applications. The cushions allow a cylinder to stroke at high speed and only slow down near the end of stroke for a quiet, low-impact stop. Adjustable pneumatic cushions are often the best solution, comprised of specially designed end caps with built-in flow controls. Mufflers can also be used to quiet cylinder or valve exhaust noise, and they are often a simple and low cost solution.
Cylinder position switches are extremely helpful in sequencing operations and prevent starting the stroke of one cylinder before the previous cylinder’s stroke is complete. Using timers to control a sequence instead of position sensors should be avoided in this and most cases. One stuck or slow cylinder during an automated sequence can cause a machine crash, costing much more than the cost of buying, installing and programming end-of-stroke sensors.
These are just a few of the many items to consider when designing a successful pneumatic system. Other factors, such as energy efficiency, can affect overall system design as well. But regardless of the design, watch out for the common issues and always be sure to supply, prep and distribute the air properly. When properly applied, your pneumatic devices and actuators will have a long life with limited operational issues along the way, and with minimal required maintenance.
These are just a few of the many items to consider when designing a successful pneumatic system. Other factors, such as energy efficiency, can affect overall system design as well. But regardless of the design, watch out for the common issues and always be sure to supply, prep and distribute the air properly. When properly applied, your pneumatic devices and actuators will have a long life with limited operational issues along the way, and with minimal required maintenance.
Once the cylinders are selected, you should now have a good idea of the flow rate and pressure of compressed air needed. With this information, you can select control valves. Items to consider in valve selection are size (flow capacity), type and actuation method.
Choosing the right type of valve for the job required is not as difficult as it may seem. For cylinder control, the simplest method is to use a 3-way valve for a single-acting cylinder and a 4-way valve for a double-acting cylinder. Systems can be much more complex if needed, but let’s focus on a basic system for now. The form factor of the valve can vary a great deal and many people have a variety of preferences. It’s usually best to make sure the valve has the needed performance characteristics before locking into a particular form factor.
Once the function of the valve has been determined, look at the required flow capacity. The usual first step is to use the air cylinder bore, stroke and cycle rate to determine a flow rate in standard cubic feet per minute (SCFM). Many valve suppliers will list a flow rate at a particular inlet pressure and pressure drop. Others will list this value as a factor Cv, which has no units. For a more thorough explanation, check out our Interactive Cv Calculator here. A simple thing to remember is that a larger Cv value will allow a higher flow rate of air through the valve. Key points to remember in valve sizing are that undersized valves may restrict flow and not allow a system to work properly. Oversized valves often cost more and will use more air. Keep in mind that air consumption is a major portion of the expense for a pneumatic system. If air consumption is a major concern for your factory, check out our Interactive Air Consumption Calculator here.
How will the valves be operated? Manual valves could be push button, lever or foot pedal activated. The more common method is to use electric solenoids to operate the valve. Solenoids are available in a variety of both AC and DC voltage ratings to fit just about any need. Match the solenoids up with your electrical control system. In less common situations, an air piloted valve may be required. When air pressure is applied to a pilot port, the valve switches. This is a good way to switch very large valves while using very little electrical power – use a small solenoid valve to send air to the pilot port of the large valve.
(FROM INTERNET)
