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隔膜泵是容積泵中較為特殊的一種形式。它是依靠一個隔膜片的來回鼓動而改變工作室容積來吸入和排出液體的。 Diaphragm pump is a more special form of volume pump. It relies on the agitation of a diaphragm to change the volume of the chamber to absorb and drain the liquid. 氣動隔膜泵主要由傳動部分和隔膜缸頭兩大部分組成。傳動部分是帶動隔膜片回來鼓動的驅(qū)動機構(gòu)，它的傳動形式有機械傳動、液壓傳動和氣壓傳動等。其中應(yīng)用較為廣泛的是液壓傳動。隔膜泵的工作部分主要由曲柄連桿機構(gòu)、柱塞、液缸、隔膜、泵體、吸入閥和排出閥等組成，其中由曲軸連桿，柱塞和液缸構(gòu)成的驅(qū)動機構(gòu)與往復柱塞泵十分相似。 Pneumatic diaphragm pump mainly by the transmission part and diaphragm cylinder head of two major parts. The driving part is the driving mechanism that drives the diaphragm to come back, and its drive forms include mechanical drive, hydraulic drive and pneumatic transmission. Among them, hydraulic drive is widely used. Diaphragm pump work is mainly composed of a crank connecting rod mechanism, hydraulic cylinder, piston, diaphragm, pump, suction valve and discharge valve, which is composed of a crankshaft connecting rod, piston and cylinder of the driving mechanism and the reciprocating piston pump is very similar. 隔膜泵工作時，曲柄連桿機構(gòu)在電動機的驅(qū)動下，帶動柱塞作往復運動，柱塞的運動通過液缸內(nèi)的工作液體(一般為油)而傳到隔膜，使隔膜來回鼓動。 When the diaphragm pump works, the crank connecting rod mechanism drives the plunger to reciprocate under the drive of the motor. The movement of the plunger is transmitted to the diaphragm through the working fluid (usually oil) in the liquid cylinder, so that the diaphragm moves back and forth. 氣動隔膜泵缸頭部分主要由一隔膜片將被輸送的液體和工作液體分開，當隔膜片向傳動機構(gòu)一邊運動，泵缸內(nèi)工作時為負壓而吸入液體，當隔膜片向另一邊運動時，則排出液體。被輸送的液體在泵缸內(nèi)被膜片與工作液體隔開，只與泵缸、吸入閥、排出閥及膜片的泵內(nèi)一側(cè)接觸，而不接觸柱塞以及密封裝置，這就使柱塞等重要零件完全在油介質(zhì)中工作，處于良好的工作狀態(tài)。 Pneumatic diaphragm pump cylinder head is mainly composed of a diaphragm liquid is transported and liquid separately, when the diaphragm to the side of the transmission mechanism, working pump cylinder for pressure and suction liquid, when the diaphragm to the other side of the movement, then discharged liquid. The conveyed liquid is separated from the diaphragm and the working fluid in the pump cylinder, and a pump cylinder, a suction valve, discharge valve and diaphragm pump side contact, and contact the plunger and sealing device, which makes the important parts such as the plunger fully working in oil medium, in good working state.