Did you know that children learn basic principles of physics that are an important component of developmental milestones through play? Seesaws are the perfect example of simple levers at work, and they encourage children to work together by rewarding them with a rollicking ride once they establish a successful rhythm. Seesaw Playground,Kids Playground Seesaw ,Seesaw Playground Equipment,Wooden Playground Seesaw Shenyang Golden Childhood playground equipment CO.,LTD , https://www.outdoor-playground.com
The seesaw is one of the most iconic and classic pieces of Playground Equipment. From school playgrounds to community park playgrounds, children love the up and down ride of a seesaw.
We offer quality seesaws in different shapes and sizes, including traditional and springer seesaws. With our multi-user seesaws, even more children can join the fun.
Our Seesaws provide opportunities for collaborative play as kids keep active! Single to multi-seat seesaws available.
Japan SMC solenoid valve plugging security measures?
SMC solenoid valve plugging before, in accordance with the relevant safety technical procedures with the necessary tools and equipment, wear protective equipment, they should comply with fire and explosion, water and oil, anti-corrosion, anti-frost, radiation and other conditions Conditions of the security requirements. The rack on the piston drives the gear on the rotating shaft to rotate counterclockwise by 90 degrees and the valve is opened. At this point the gas at both ends of the valve with the B nozzle discharge. On the other hand, when the compressed air enters the two ends of the pneumatic actuator from the burner B, the gas drives the double plug to move linearly to the middle. The gear on the piston drives the gear on the rotating shaft to rotate clockwise by 90 degrees and the valve is closed. At this moment, the gas in the middle of the pneumatic actuator will be discharged with A nozzle. The above is the standard transmission principle. According to user needs, pneumatic actuator can be installed into the contrary with the standard transmission principle, that is, select the quasi-clockwise rotation of the valve to open the valve, turn counterclockwise to close the valve. Single-acting (spring return type) pneumatic actuator A nozzle for the inlet, B nozzle for the vent (B nozzle should be installed muffler). A nozzle inlet gas to open the valve, off gas by spring force to close the valve. SMC solenoid valve plugging safety measures (1) SMC solenoid valve plugging personnel should be in-depth understanding of the leak site working pressure, temperature, medium and the nature of the media to analyze the causes of leakage and leakage features. And then develop foolproof plugging program, this program should be two sets, but also to stop the withdrawal of failed personnel to deal with the scene of the negative program. (2) SMC electromagnetic valve plugging staff should be strong sense of responsibility, time-experienced familiar with the state of the equipment as a guardian and with 1 to 2 people, plugging staff should be small but sophisticated. (3) SMC solenoid valve plugging strictly enforce the safety technical regulations. (4) SMC electromagnetic valve plugging personnel should wear labor protection articles suitable for working conditions as required and prepare the required safety tools and equipment. (5) to clean up the electromagnetic valve plugged around the scene SMC, depending on the nature of the hazardous medium to do the ventilation, evacuation, drainage, cover and other protective measures. (6) plug the SMC solenoid valve, try to avoid welding plugging method, do not have electrical equipment and tools, nor allowed to use may cause sparks, fever tools and methods of operation, the use of copper tools, air guns, pneumatic drill. (7) The parts that are allowed to move should be fire-proofed, and positive pressure operation should be carried out so as to prevent Mars from fleeing into the interior of the leak and causing an explosion. Gas seal at positive pressure> 196Pa (20mmH2O). (8) After using kerosene and rust remover to clean the bolts and live joints, apply graphite and molybdenum disulfide to the threads to lubricate the threads. Slow and light operations are not required to prevent the threads from sliding and the bolts breaking. Less with kerosene, to prevent the fire. (9) High-altitude operation should be set up platform or the use of lifts, cranes as a platform, with signs, passwords, walkie-talkie contact. (10) Underwater SMC solenoid valve plugging should abide by the rules of the underwater operation, wetsuit wetsuit, intact, underwater water signal is the same, safe and reliable, engaged in underwater welding should be shockproof. (11) indoors, ditch, downhole, container operation, pay attention to anti-virus, anti-suffocation, there should be rescue measures. Go down, into the container before the response to air sampling test, after passing the required access. (12) valve plugging staff work, should be in a favorable situation, such as the limelight, leakage above and side, easy to retreat. Visual conditions can be used baffle, isolated pad, steam shield and other measures. (13) SMC solenoid valve plugging, the operator should be determined by the program, we must be cautious and decisive, while doing observation, not subjective and unreasonable. Plugging technology has different forms of sealing, a variety of construction techniques, a variety of plugging methods. To sum up the following ten ways: to adjust the method of leakage, mechanical plugging method, welding plugging method, adhesive plugging method, plastic plugging method, physical plugging method, chemical plugging method, change the sealing method, with Pressure repair method, comprehensive management.