On January 5, 2012, the Ministry of Industry and Information Technology issued a notice requesting that dangerous goods vehicles with a total mass of more than 12 tons should be equipped with retarders or other auxiliary braking devices. As soon as the notice came ou…

China Shipping Petrochemical Co., Ltd. was informed that the downstream supporting project of Ledong Gas Field, which was built by the company with an investment of about RMB 1 billion, has entered the construction peak period. Up to now, the actual progress of the project has reached 96.62%. …

Energy tension is a common problem faced by all humanity. Throughout the history of human development, every major advancement in civilization has been accompanied by the improvement and replacement of energy. At present, the world’s major energy producers and energy consumers are all s…

The liquid refrigerant in the condenser is connected to the capillary through the regulating valve and the capillary is a normally closed device. The pressure value is set according to the temperature of the refrigerant, the mechanical degree of the fluid is increased, and the pressure is…

China Drying Network News The overall operating rate of the domestic chlor-alkali industry is low, and the loss surface continues to expand. A …

The main body responsible for fire safety is the social unit. To alleviate the current tense fire safety situation, it is necessary to launch social unit forces and take various measures to prevent the work. Fire safety has a major responsibility, but some areas and departments still have out…

Since there has been a full-scale development of modern transportation tools, the seemingly distant distances of the past two thousand years have also become within reach. Nowadays, as a family of three, i…

Now we can see the mobile refueling vehicles on the road from time to time. The mobile refueling vehicle is like a timely rain, arrived in a timely manner to the desired place, ease the inconvenience of th…

After leaving Shouguang County, the Haixuan Group continued to conduct research and visits in other markets in Shandong Province, and explored the industry and exchanged information along with dealers. Where the sea election group went, it was very popular among merchants. Pingdu City Haode Tra…

[China Instrument Network Instrument Enterprise] With the vigorous promotion of the "Internet" strategy, China's smart city construction is gradually accelerating. Water supply is an important infrastructure for urban construction, and the full use of science and technology to ach…

Automatic return valve structure and working principle

Automatic return valve installed in the boiler feed pump outlet to prevent backflow of water, and to ensure that there is a certain minimum recycle bypass flow.

The feed water pump three-way valve by the valve body and …

In the grinding process, how to make the coolant enter the interface between the grinding wheel and the workpiece; the grinding wheel is kept clean without clogging of surface pores with waste debris, etc. This has been a problem that has not been solved. …