The Chinese industry started from Guangdong Brothers Oak Company in 1915, and was born in Shanghai in 1934. A tire has been built into a world industrial power after more than 90 years, and the consumption of raw rubber has ranked first in the world since 2002
1、 In 2005, the output of tires was the first in the world. The output of major non tire products such as rubber hose, adhesive tape, rubber shoes, etc. was the first in the world. In recent years, the annual average growth rate of consumption in China is about 8%. Consumption is an important indicator of industrial development. In 2008, the world's rubber consumption was about 22 million tons, while China's was 5.5 million tons, more than 1/4 of the world's.
In 2008, the total output of tires in China was 350 million, including 265 million radial tires, with a meridianization rate of more than 75% and a tire export volume of about 40%. Although China's industry has been impacted by the international financial crisis since the second half of 2008, it is estimated that the growth rate of the industry will still be about 10% before 2010. The continuous and orderly development of the industry is closely related to the development of the automobile industry, transportation industry, including roads and railways. In 2008, China became the world's second largest automobile producer, with a total output of 9.43 million vehicles, and in 2009, it exceeded 10 million vehicles.
The development of automobile industry and transportation industry puts forward higher and higher requirements for products and supporting raw materials. High quality additives are one of the bases for industrial development. 1. The application of electric butterfly valve in vehicle suspension system The suspension mode with electric butterfly valve as elastic element is called air suspension system.
At present, air suspension systems are almost installed on foreign high-end buses, cars and tractors, while domestic middle and high-end buses are in trial production or preparing to use air suspension systems. When the air suspension system is used in the vehicle, the height of the vehicle body can be automatically adjusted to keep the height of the vehicle body unchanged. The electric butterfly valve has low natural frequency and good vibration and sound absorption effects, which can greatly improve the smoothness of the vehicle, the flexibility and comfort of the seat, and can effectively protect the precision instruments and electrical equipment on the vehicle and transport, Reduce maintenance times and maintenance costs, extend the service life of vehicles, greatly reduce the impact of vehicles on the road, and extend the service life of the road. With the maturity of domestic air suspension system application technology and the implementation of new regulations on bus quality level review, the application prospect of electric butterfly valves on vehicles will become more and more common and broad.
2. Application of electric butterfly valve on lifting equipment
The traditional lifting equipment uses cylinders or hydraulic cylinders to lift objects, which requires large installation space, is difficult to manufacture, weighs heavily, is prone to leakage, and is inconvenient to maintain. After the electric butterfly valve is used as the lifting element of the lifting equipment, the traditional shortcomings of the lifting equipment can be overcome, the maintenance is unnecessary, the service life is long, and the operation and replacement are convenient. Therefore, electric butterfly valves are gradually replacing cylinder products on lifting equipment.
3. Application of electric butterfly valve on vibration reduction equipment
The electric butterfly valve has the advantages of high frequency vibration isolation, sound insulation and low natural vibration frequency, which can better realize vibration isolation and ensure the safety and stability of the base and control system of the vibration equipment. Therefore, electric butterfly valves are widely used in equipment such as vibration isolation of shale shakers and vibration reduction of luxury vehicle seats.
4. Other uses of electric butterfly valve
Using electric butterfly valve as shock absorption base can effectively protect precision equipment from damage during transportation, such as the transportation of missiles and control launching devices. The electric butterfly valve is used as a support tool to facilitate the maintenance of field vehicles and equipment by making use of its light weight and convenient operation.
No matter the basic principles of automobile valves or industrial valves are basically the same, they are basically divided into two parts: butterfly valve (steel plate butterfly valve, titanium butterfly valve, electric butterfly valve, composite butterfly valve) and damping mechanism. The important part is rebound damping. Generally speaking, in R, the so-called valve is dependent on the influence of R conversion energy.