解決的問題：提供一種流量減少閥，該流量減少閥的部件數(shù)量少，結(jié)構(gòu)簡(jiǎn)單，可低成本制造且可靠性高。解決方案：在該流量控制閥1中，當(dāng)閥桿15具有閥芯時(shí)當(dāng)圖19中的閥沿閥桿的軸向移動(dòng)時(shí)，閥元件接近并與位于閥體2中的閥座5a分離，以進(jìn)行流量控制。流量控制閥1包括引導(dǎo)裝置15a，2、18，用于在軸向方向上引導(dǎo)閥桿，同時(shí)限制閥桿在與閥桿的軸向垂直的方向上的運(yùn)動(dòng)在與閥桿隔開預(yù)定距離的兩個(gè)點(diǎn)之間。沿閥桿的軸向相互連接。在使用流量控制閥時(shí)，僅可以安裝一個(gè)O形圈16來可靠地限制閥桿在垂直于軸向方向上的移動(dòng)。由于減少了O形圈的數(shù)量，因此可以減小O形圈和閥桿之間的滑動(dòng)面積，并且可以減小流量控制閥的驅(qū)動(dòng)力。當(dāng)閥桿形成為圓柱形時(shí)，L / D為1.2至5，其中閥桿的外徑為D，預(yù)定距離為L(zhǎng) 。;版權(quán)所有：（C）2009，JPO＆INPIT
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