A Bucket Elevator, also called Bucket Conveyor,buckets lifter,lifting conveyor,lifter, is consists of a series of metal buckets and a driving chain connected to a drive motor. it is used to lift small pellets and self-discharging powders. Bucket elevator consists of running parts, drive units, upper units, middle cabinets, and lower units. Running parts It consists of a hopper and a special chain. The single-row chain is used for the NE30 and the NE50-NE800 is double-chained. Drive A variety of drive combinations are used. The drive platform is equipped with a maintenance frame and a railing, and the drive device is divided into two types: left and right. Upper unit A rail (double-row chain), backstop, and discharge pockets are fitted with anti-return rubber sheets. The middle section of the middle section is equipped with rails to prevent the chain from swinging during operation. Lower unit An automatic tensioner is installed.
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Afterwards, the reporter learned from the industry insiders that they have learned that in recent years, some illegal equipment makers have cut corners on polypropylene materials and have not paid attention to product quality, which has led to many safety accidents. Such as a pharmaceutical company in Shaoxing, Zhejiang, a storage tank of polypropylene acid burst, but fortunately did not cause casualties; Zhejiang Xianju a pharmaceutical factory a 15 cubic meters of polypropylene storage tank filled with hydrochloric acid, less than 10 Days of hydrochloric acid even went missing. Originally, due to cracks in the storage tank, all of the hydrochloric acid leaked, and the surrounding large areas of land were contaminated. Later, it was verified that the two manufacturers that provided these polypropylene material storage tanks were unlicensed manufacturers.
Through a survey of users of a number of equipment using polypropylene materials in Zhejiang, the reporter learned that China's polypropylene material equipment manufacturing market currently has serious problems such as unlicensed production, shoddy materials, and market price confusion, resulting in the existence of many products. The lack of corrosion resistance, brittle cracks and leakage of equipment and other safety hazards, equipment life is short, causing varying degrees of economic losses to the user.
Equipment made of polypropylene, including towers, vacuum tanks, stirrers, storage tanks, etc., is mainly used for the storage of acids, alkalis, and other solutions in the petroleum, chemical, metallurgy, and pharmaceutical industries. Standard equipment. Due to its excellent corrosion resistance, since the early 1980s, polypropylene material equipment has gradually been applied in petrochemical and metallurgical industries, becoming a substitute for metal anticorrosion equipment. However, due to insufficient promotion efforts, lack of understanding of user companies, and lagging industry standards, despite the development of more than 20 years, the application of polypropylene material equipment in China is still in its infancy. According to statistics, the current annual demand for polypropylene material equipment in China is less than 2 billion yuan. Although the industry is small, it has squeezed into nearly 400 manufacturing companies, mainly in three provinces of Zhejiang, Jiangsu and Guangdong. Of these companies, nearly 60% have not yet obtained production licenses.
As the polypropylene material equipment is directly in contact with acid and alkali solutions, and some even precious metal solutions, the relevant state departments have specifically included it in the dangerous goods container management category and implemented a license management system. However, the supervision is still almost blank, which is the main reason for the spread of unlicensed production. The difficulty of supervision lies in the fact that the manufacture of polypropylene material equipment requires not only the production of dangerous goods container production licenses, but also the acquisition of non-standard equipment manufacturing licenses; it is not only guided by the relevant management organizations of the chemical equipment industry, but also needs to receive technical supervision departments. Supervision. As a result of this multi-industry and multi-sector supervision, the manufacture of polypropylene material equipment is still in a state of gravity.
In addition, due to the lack of necessary understanding of the standards for polypropylene material equipment by user companies, some manufacturers have left a hole in the material. In accordance with industry standards, the materials used for this type of equipment should be polypropylene or A-grade plates, but many manufacturers use calcium carbonate as a filler to reduce the quality of polypropylene plates to B-level or even C-level, which greatly reduces the material quality. The toughness and corrosion resistance make the product buried a serious safety hazard from the beginning. According to a survey by the reporter, at present, the price of polypropylene pure plates is generally 16,000 yuan/ton, that of A-class panels is 12,000 yuan/ton, that of B-class boards is 7,000 to 8,000 yuan/ton, and that of C-class boards is only 5,000 to 6,000 yuan. Ton. If a Class C board is used to manufacture equipment on the basis of a Class A board, its huge profits will have the effect of disrupting the market price of the entire polypropylene equipment and even leading to the phenomenon of “bad money driving out good moneyâ€.
At the same time, users lack the necessary checks in the procurement process and also provide convenience for the proliferation of inferior polypropylene equipment. The procurement of polypropylene material equipment is essential for at least two aspects. One is to verify the manufacturing license of the manufacturer, and the other is to test the important technical parameters of the equipment such as corrosion resistance parameters, toughness parameters and material density. General and regular manufacturers should be equipped with special testing equipment, and provide users with testing services and inspection reports.
For the non-standard market, users of polypropylene material equipment and industry-standard manufacturers strongly urge the relevant state departments to speed up the rectification of the market, and also regulate manufacturers to a level playing field to ensure the safety and economic benefits of user companies. .
Recently, a boss from Zhejiang Bozhou to Zhejiang looking for business opportunities for cooperation reported to reporters that one of the smelters he invests in the trial operation of the production plant, all six sets of polypropylene material storage tanks used were bursting, and the economic losses were heavy. As a result, the company had just tried. Running into a paralysis. After investigation, the material and process of these 6 polypropylene storage tanks did not meet the standards and were inferior products.