介<\/p>??1、用途
??在液壓系統(tǒng)中,工程上常將某一執(zhí)行機構的進回油路上相互控制,成對使用的兩個液控單向閥組合在同一個閥體內,稱之為雙向鎖。其可使執(zhí)行機構在任意位置停止后,加以可靠的鎖定作用,從而避免在各種因素影響下可能發(fā)生的位移。
??2、執(zhí)行標準MT419——1995《液壓支架用閥》
??3、工作原理
雙向鎖，包括閥體，開設在所述閥體內的閥腔，和開設在閥體上與閥腔相通的進、出液口；所述閥腔為水平貫穿閥體的通腔；在閥腔的中部密封滑動設置有截面為“十”形的雙向頂桿；所述雙向頂桿的左、右頂桿分別延伸到設置在閥腔內的左、右閥套內，在所述左、右閥套內分別設置有閥座；在閥腔左、右端口分別螺紋密封連接有開有凹腔的堵塞，在所述堵塞的凹腔內分別設置有閥芯和回位彈簧；所述進、出液口分為左進、出液口和右進、出液口；左、右進液口分別通過各自的流道與對應的左、右閥座側的閥腔相通；本實用新型優(yōu)點就在于板式閥體更便于閥體的拆裝；將閥芯、閥座分別設置在所述閥套、堵塞凹腔內，板式的結構更加簡單緊湊。
??4、使用說明
??①本閥實用于31.5MPA的主管路及支管路的液壓系統(tǒng)中，工作介質為含5％乳化液和95％中性水混合而成的乳化液，可在10℃--50℃溫度下正常工作，介質需要保持清潔，無雜質。采用0.125MM精度的過濾器及磁性過濾裝置過濾
??②本閥在井下如需要檢修時，應整體更換，不可在井下拆檢，以防止贓物進入閥腔內
??5、故障分析及排除<\/div>
浙江樂清市神華礦業(yè)液壓機械有限公司是一家專業(yè)生產煤礦用機械液壓元件產品的企業(yè),主要產品有平面截止閥、球形截止閥、液控單向閥、操縱閥，單向鎖，雙向鎖，安全閥、過濾器、直通（變徑）、三通（異徑）、彎頭、注液槍、三用閥,回油斷路閥、噴霧閥、換向閥、管接頭、堵頭，管路配件及乳化泵配件等等.
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