In April this year, Huaxia Valve Technicians invented the two practical technologies of "compound gate of one-way sealed parallel double gate valve" and "locking device to prevent the action of safety valve", which won the patent certificate of utility model issued by the State Intellectual Property Office, not only for the field regulation, operation of company products and the protection of valve components. It provides more practical and convenient technical support, and also shows the strong technical strength of Huaxia Valve and the continuous growth of intellectual property rights.
"Compound gate of one-way sealed parallel double gate valve" is a practical technology invented by Chen Xuefeng, Fei Tian and Liu Yu, the company's technology center. The invention of this technology provides high-quality technical guarantee for assembling, regulating and protecting the disc of parallel double gate valve.
It is reported that gate valves are mainly used to control the one-way flow of medium. The traditional one-way sealed parallel double gate valves include gate seat and gate plate. The gate plate is mainly composed of the clamp ring and the upper end of the clamp ring in the assembly hole, and the lower end of the valve set in the valve seat. The valve set includes the inlet and outlet discs. A spring is arranged between the inlet disc and the outlet disc to adjust the position of the two discs.
In this type of gate valve, the compound gate must use special assembling tool to compress the spring between the inlet and outlet discs. Therefore, after assembling the disc into the valve seat and removing the special assembling tool, it is impossible to restrict the inlet and outlet discs when the spring is in free state. The position of the valve can easily cause the whole disc group of the composite gate to fall off from the assembly hole of the clamp ring and cause damage, shorten the service life of the whole gate, and the assembly difficulty is also high.
In order to improve the shortcomings, based on the research idea of simplicity, practicality, convenience, low cost and easy processing, the three designers connected the import and export valve discs through a simple and easy-to-process limit device without changing the gate structure, thus realizing the adjustment of the position of the import and export valve discs and avoiding the discs. The assembly holes of the clamp ring fall off and cause damage, which prolongs the practical life of the valve disc and makes the assembly of the gate simple and convenient.
Another patent for the invention of "locking device to prevent the action of safety valve" was jointly completed by Quanweijun, Chen Xuefeng and Chen Rongchang. By setting a limit device-open loop on the travel control ring of safety valve, and cooperating with the setting of thread structure connecting the stem of safety valve and the travel control ring, the whole safety can be quickly realized by simple operation. The setting of the valve is locked.
In order to solve the problems of long time, high cost and complex structure of safety valve debugging and setting before the normal use of safety valve, the designer boldly improved the structure of valve components, set a limit device on the stroke control ring, and debugged it.
