Nanjing Lemin Automatic Control Valve Research Institute was founded in 1994, engaged in research and development of self-operated automatic control technology.
(1) Utility model patent: hydraulic metering mixing pump, patent No. 2. Content: Coal mine dust-proof equipment can automatically add 3 é™ of dust-removing agent to the dust-proof pipe water in a self-powered form. Patent technology has been successful in poverty alleviation.
(2) Utility model patent: automatic proportioner for emulsion tank emulsified oil, patent No. X. Content: Self-operated automatic control system for hydraulic fluid pumping station in coal mine underground. Under the fluctuation process of water supply pressure of 0.4-5 (Mpa), the self-operated control technology such as large differential pressure decompression and pressure regulation, two-level liquid level regulation and automatic proportional ratio can be 3% to 5%. The emulsified oil is continuously proportioned to the hydration of the tank in a self-supporting form. This patented technology has been successfully used by the Institute for many years.
(3) In 2001, I applied for a patent for the invention with a "cut valve with piston actuator and valve positioner", patent number: ZL 01122748.6, and the invention was published under the title "Valve Actuator - Self-operated Valve" In the first issue of the "Valve" publication in 2003. The invention patent was granted in January 2005. The prototype of the product has been developed, and all the test conditions have achieved the expected results. The valve developed by this technology is named as "Bao valve", also known as "double piston self-operated valve", this valve is an automatic valve, creating a new generation of valve new varieties, this technology will change the current level of automation technology in the field of industrial general valve application, promote Achieve universal automatic control technology. This technology has its huge commercial development prospects. In the field of international valve industry, this invention patent can be developed into a valve product with international advanced level and with independent intellectual property rights in China.
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