Diamonds refer to polished diamonds. Diamonds are natural minerals and raw stones of diamonds. In short, diamond is a simple crystal composed of carbon element formed under high pressure and high temperature conditions in the deep earth. Diamond is the hardest natural substance known in the world.

Cultivate diamonds

Cultivating diamonds is also called growing diamonds. Generally speaking, small diamonds are used as "seeds" to simulate the growth environment of natural diamonds through technical means, so that the carbon atoms in "nutrients" gradually attach to the diamond seeds, so that the diamond seeds can grow into larger diamond crystals.

The production technologies for cultivating diamonds mainly include HPHT high-pressure high-temperature method and CVD chemical vapor deposition method. The diamonds produced by CVD method have high purity and heavy weight. The defects are long growth cycle and unstable color. The main reasons for these defects are the backwardness of gas circulation equipment, low circulation efficiency and many impurities in the working chamber.

Why use dry vacuum pump

Yining Company has developed a special dry gas circulating pump to meet the requirements of the diamond and diamond industry for ultra clean, high efficiency, large differential pressure and other characteristics. The maximum differential pressure bearing capacity has reached 100000 Pa, greatly improving the circulating efficiency; The vacuum pump cavity is completely free of oil and water, so as to avoid the trouble of oil contamination brought into the circulation system during the use of the rotary vane pump, and improve the product quality; The oil tank and vacuum chamber are designed separately to completely solve the hidden danger of lubricating oil entering the working chamber; The sealing structure specially designed for ultra clean working conditions such as diamond cultivation can be sealed independently without relying on the oil tank, so as to avoid air entering the circulation system and affecting the diamond quality. Yining dry vacuum pump is favored by the majority of man-made diamond manufacturers and has been used to replace the oil rotary vane vacuum pump of CVD equipment.

Shandong Yining Environmental Protection Technology Co., Ltd. (hereinafter referred to as the Company), a national high-tech enterprise, was established on June 23, 2016. The Company is located in the Science City New Material Pilot Zone Park, Zibo Hi tech Zone, Shandong Province. It focuses on the R&D, production and sales of claw type dry vacuum pumps, dry screw vacuum pumps and vacuum supporting systems. The enterprise has passed the ISO9001 quality system certification ISO14001 environmental system certification, OHSAS18001 occupational health system certification and EU CE certification. Vacuum acquisition equipment is one of the general equipment in the industrial field, which is widely used in military industry, aerospace, laboratories, photovoltaic, semiconductor, hydrogen energy comprehensive utilization, chemical industry, metal smelting, household appliance production, medical, biopharmaceutical, artificial diamond, vacuum magnetic levitation communication and many other fields. As the leading vacuum innovation technology integration service provider in China, the company has been committed to developing high-end dry vacuum acquisition equipment and complete technology research and development for many years. The technology of vacuum system required in polymer materials, refrigeration production, diamond production and other industries has reached or exceeded the international first-class level. The company's hydrogen circulating pump project won the title of Taishan Industry Leading Talent Project (Science and Technology Entrepreneurship) in 2021.