博文

目前显示的是 六月, 2016的博文

QUANSHUN slurry valve is successfully applied on the tailing working conditions

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QUANSHUN slurry valve is developed on the basis of PENTAIR Slurry valve . Firstly they are designed for the transportation of digestion workshop, decomposition workshop and settling workshop etc. The applicable medium is ore pulp and raw slurry that has characteristic of large flow resistance, high abrasiveness and easy scaling. Due to high performance under these serve working conditions, QUANSHUN slurry   valve has nice influence in alumina industry. To develop other applications, QUANSHUN’s   R&D and sales team went into the work site of China Molybdenum Co.,ltd and found the other valves has short working life and frequent replacement problem in molybdenum ore conveying process.   According to the working condition, our R&D team optimized the performance on the original slurry valve, then developed the customized types of slurry valves . China Molybdenum Co.,Ltd   was planning a major overhaul on the morning of June 14 th ....

a whole day working as a photographer for valve inspection

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Due to one of an important customer visit Henan Quanshun Flow Control Science & Technology Co.,Ltd ,  I worked as photographer yesterday . It is very hot in workshop ,the temperature reached up to 40 Degree.All the people in workshop are in a sweat .It is the same for our customer .The people looks like more than 50 years  ,worked as QA inspector in CNOOC. CNOOC is  shor for China National offshore oil coporation . They have a very strictly inspection procedure  .   He visited us to inspect the large size bi-directional sealing butterfly valves ,DN1400 ,pressure 1.0MPa . Appearance of valve body inspection is the first stage .He not only  looked the valve body carefully but also took some photo by mobile .Then he read our document carefully and asked our Engineer some questions . All of them are answered .For electric large size metal seated butterfly valve ,he checked the closing time of actuator .  It only takes less than 2 mini...

Spherical Disc Valve working principle

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Spherical disc valve ,also called segment ball valve ,is designed to convey the solid medium . The following is Spherical Disc Valve working principle : The spherical shapped ,quarter -turn valve has no sliding seal to leak and operation well after installation .There are 3 phase when the valve in working stage .including valve open ,valve closing and fully closed. Valve totally open: Material falls unobstructed through the inlet opening. Nothing is in the flow stream to cause product bridging, so you get the full flow capacity of the valve. Notice that the sealing surfaces are protected from direct contact with material. Valve  closing: As the valve begins to rotate closed, the dome wipes against the seat, cutting off the flow of product and pushing material above or below the valve instead of wedging it between the dome and seat. The design naturally resists abrasive wear and there are no pinch points or places for material to hang-up.  Valve Fully closed: ...