液壓升降平臺(tái)http://www.qdysj.net/旋塞閥的全稱是金屬硬密封提升式旋塞閥，金屬硬密封提升式旋塞閥兩側(cè)閥座密封面均可密封，閥門的使用不受介質(zhì)流向的限制。金屬硬密封體提升式旋塞閥關(guān)閉時(shí)，可通過手輪和閥桿對(duì)閥座密封面加壓，通過加大密封比壓，可使旋塞閥具有更好的密封性能。閥座密封面凸起，便于密封面清洗，密封面不易積存結(jié)晶介質(zhì)，或固體顆粒。
　　
1、液壓升降平臺(tái)手輪手柄式提升式旋塞閥，工作原理為上升，使旋塞和閥門全打開。關(guān)閉時(shí)先轉(zhuǎn)動(dòng)手柄使旋塞轉(zhuǎn)動(dòng)90度至關(guān)閉位置，再轉(zhuǎn)動(dòng)傳動(dòng)裝置手輪使旋塞下降達(dá)到密封。閥門再啟閉過程中旋塞與閥座相脫離，故閥門的啟閉非常輕松，而且密封面在開啟或關(guān)閉過程中不易擦傷，閥門使用壽命長。但采用手柄驅(qū)動(dòng)力矩小，因此使用閥門的公稱尺寸通常不大。手輪手柄提升式旋塞閥結(jié)構(gòu)緊湊，體積小，流體阻力小。
Hydraulic lifting platform lift handwheel handle type plug, works for the rise, making taps and valves fully open. First, turn the handle when closing the cock rotated 90 degrees to the closed position, and then turn the hand wheel gear

dropped to seal the cock. Re-cock valve opening and closing process and the phase out of the seat, it is very easy to open and close the valve, and the sealing surface in the open or closed process is not easy bruising, valves and long

service life. But with the handle drive torque, so use the valve nominal size is generally small. Hand wheel lift handle plug compact, small size, low fluid resistance.
  
2、液壓升降平臺(tái)http://www.qdysj.net/十字架傳動(dòng)提升式旋塞閥，工作原理為開啟閥門時(shí)傳動(dòng)裝置轉(zhuǎn)動(dòng)閥桿的螺紋使旋塞體上升。旋塞和閥體密封面脫離后再驅(qū)動(dòng)旋塞轉(zhuǎn)動(dòng)90度到閥門全打開。關(guān)閉時(shí)傳動(dòng)裝置使旋塞先轉(zhuǎn)動(dòng)90度至關(guān)閉位置后，旋塞不再轉(zhuǎn)動(dòng)，驅(qū)動(dòng)力轉(zhuǎn)動(dòng)螺紋后使旋塞下降，與閥體密封面接觸達(dá)到密封。液壓升降平臺(tái)十字架傳動(dòng)機(jī)構(gòu)可連接汽缸、電動(dòng)裝置、液壓系統(tǒng)等進(jìn)行遠(yuǎn)。
Cross drive hydraulic lifting platform lift plug, works for the open valve gear rotating threaded stem the rise of the cock body. Taps and valve sealing surface and then drive off cock rotated 90 degrees to the valve is fully open. When you close the cock first gear to rotate 90 degrees to the rear position closed, cocks no longer rotates, the driving force of the cock after turning the threaded down into contact with the valve sealing surface to seal. Hydraulic lifting platform can be connected to the cylinder cross transmission, electric, hydraulic systems and other far.