As we are living in the 21st century, we should feel very happy. In the old generation, in the past, the traffic was basically used to go. A few hundred miles away would take a few days and stop for a few days to stop. Now, because of the continuous development of the society, when China had the first bus line in 1907, it was only after 1908 that China finally had the first tram, that it gradually ended without bus history. Until today's 2016, during the development period of this century, China's auto manufacturing technology is getting better and better, and the use of vehicles is also increasing, which is a direct result of the continuous occurrence of traffic accidents. As a result, the demand for special vehicles for transporting those dangerous goods is also increasing, and accidents caused by dangerous goods transport vehicles of this type are also frequently occurring. Therefore, the state has a It has been related to regulations and unified. When using fuel tankers and tankers, you need to install the upper and lower loading ports. However, some friends will ask, what is the purpose of installing the bottom loading port?
The oil tanker's bottom loading port is also known as the drain valve. It is installed under the tanker's side and is used to quickly remove the oil. Its front port is in accordance with the relevant standards of the United States, and can be connected with the unloading hose boring heads. And can make its internal pressure value to a minimum when the flow is relatively large. The location of the exit uses a flat structure. When the joint is disassembled, there will be no oil leakage.
The tanker's drain valve is anodized and has an integral cast aluminum housing that is replaceable on its components. The flat bottom outlet structure of the drain valve can ensure that the liquid can be completely discharged, which is conducive to environmental protection. After using the die-cast aluminum structure, the weight can reach 8.8 kg, which can effectively improve the load capacity. The role of blessing rubber seal, which is suitable for the use of high octane additives and fuel.
Noise standards for six categories of small Home appliances will be officially released soon
Recently, the mandatory national standard GB19606-2004 noise limits for household and similar electrical appliances, which was officially implemented on August 1, has added a new "d", including air purifiers, dishwashers, vacuum cleaners and water absorbing cleaning appliances, electric kitchen appliances, food shredders The special requirements for noise limits of six types of small household appliances, humidifiers, are currently in the stage of online publicity of WTO / TBT and will be officially released soon.
The draft for approval of the special requirements for noise limits of these 6 types of products stipulates that all technical contents of the standard are mandatory. The specific noise value must be marked on the nameplate or operation manual of category 6 products, and the deviation between the measured value and the indicated value shall not exceed 3 dB (a), and the maximum shall not exceed the standard limit value. Li Yi, director of the national household appliance Standardization Technical Committee, said that enterprises should pay more attention to this series of standards. As a national mandatory standard, once formally implemented, enterprises and businesses involved in these six types of products should act in strict accordance with the laws and regulations and express the noise value of products in time.
The draft of special requirements for humidifiers with noise limits for household and similar electrical appliances for approval stipulates that "the sound power level noise of humidifiers shall meet the regulations." the special requirements for food blenders with noise limits for household and similar electrical appliances are applicable to food blenders with rated voltage of 220V and rated power of no more than 700W, For household and similar purposes, the motor drives the blade in the container to rotate at high speed to stir or crush food. Appliances with a rated power of more than 700W are under consideration. The noise limit requirements include the noise value requirements of immersion food crusher and solid food crusher. It is specified that the noise limit of immersion food grinder is: the noise value of appliances with power ≤ 400W shall not exceed 90dB (a), and the noise value of appliances with power ≤ 400W shall not exceed 90dB (a); The noise limit of solid food crusher is: the noise of appliances with power ≤ 400W shall not exceed 100dB (a), and the noise of appliances with power ≤ 400W shall not exceed 105dB (a).
The special requirements for noise limits of household and similar electrical appliances and electric kitchen appliances are also applicable to appliances with motor rated input power not greater than 700W, and the requirements for appliances with power above 700W are also under consideration. According to Li Yi, this standard is applicable to electric kitchen appliances other than food shredders, such as soybean milk machine, juicer, etc. The standard specifies specific noise limits.
The noise limits of household and similar electrical appliances, special requirements for vacuum cleaners and water absorbing cleaning appliances, are only applicable to vacuum cleaners and water absorbing cleaning appliances (including their accessories and components) used in families and similar occasions. The requirements for product noise limit are: if the rated input power of vacuum cleaner is ≤ 1000W, the noise limit shall be ≤ 84dB (a); For rated input power ＞ 1000W and ≤ 1400W, the noise limit is ≤ 86db (a); For rated input power ＞ 1400W, the noise limit is ≤ 90dB (a). The noise value of water absorbing cleaning appliance shall not be greater than 90dB (a).
The noise limits of products are also specified in the special requirements for dishwashers and the special requirements for air purifiers. Among them, the sound power level noise of the Air Purifier shall comply with the provisions in Table 3. The noise limit value of the sound power level of the standing dishwasher shall not be greater than 61db (a), the desktop dishwasher shall not be greater than 65dB (a), and the embedded dishwasher shall not be greater than 58db (a).
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