The utility model discloses a multi-stage bypass valve, which is installed at the oil outlet on the top of the primary fine filter element and the secondary coarse filter element, and the shell of the bypass valve is provided with an annular groove through which the oil flows. A primary disc spring is installed between the inlet of the primary fine filter element and the inlet of the secondary coarse filter element, and is pressed by the primary regulating seat, and the primary regulating seat and the primary disc are pressed by the primary retaining ring The spring is fixed to prevent the fall off of the primary adjusting seat and the primary disc spring. The secondary disc spring is installed between the inlet of the secondary primary filter element and the outlet of the secondary primary filter element, and is compressed by the secondary adjusting seat. The secondary adjusting seat and the secondary disc spring are fixed by the secondary retaining ring. The structure of the technical scheme is light and compact, which effectively reduces the installation space of the by-pass valve in the process of multi-stage filtration and makes the system more optimized.
【技术实现步骤摘要】
一种多级旁通阀
本技术涉及一种多级旁通阀,特别适用于安装空间小又旁通能力高的装备中使用。
技术介绍
旁通阀一般与过滤器并联使用,当滤芯流通阻力达到一定程度时旁通阀开启,防止油液断流,现有的旁通阀结构大多为锥面密封,弹簧压紧结构,国家专利局授权的专利号201720645508.6,名称为“一种带旁通阀及粗过滤的新型滤芯”公开的旁通阀包括:过压保护上端盖、过压保护内衬体的两端分别设有所述过压保护上端盖,所述过压保护下端盖,所述过压保护内衬体内设有弹簧,所述弹簧的两端分别与所述过压保护上端盖、所述过压保护下端盖固定连接,所述阀芯垫片位于所述过压保护上端盖与所述弹簧之间,工作时,当油液中颗粒物杂质在滤材上不断累积形成堵塞,滤芯体进出口油压差不断升高,当滤器腔室内的压力大于弹簧时,由阀芯垫片推弹簧位移,使得过压的油液依次经过弹簧所在的腔、粗过滤、滤芯出油腔室最后由出油口排出,其缺点是,工作时依靠弹簧位移,弹簧是弹性元件其两端还要通过过压保护上、下端盖密封,占用空间较大,零部件多,结构复杂,此结构相对工艺简单操作性好,但在安装空间较小且要求多级旁通的场合很难达到要求。
技术实现思路
本技术的任务是提出一种有效减少了旁通阀的安装空间,且结构紧凑,减轻重量的一种多级旁通阀。本技术的任务是这样完成的,其特征在于:旁通阀安装在一级精滤芯和二级粗滤芯顶部出油口处,且旁通阀壳体里设有油液通过的环形槽,所述一级精滤芯进口与所述的二级粗滤芯进口之间安装有一级碟簧并通过一级调节座压紧,用一级挡圈将一级调节座和所述的一级 ...
【技术保护点】
1.一种多级旁通阀,其特征在于:旁通阀安装在一级精滤芯和二级粗滤芯顶部出油口处,且旁通阀壳体里设有油液通过的环形槽,所述一级精滤芯进口与所述的二级粗滤芯进口之间安装有一级碟簧并通过一级调节座压紧,用一级挡圈将一级调节座和所述的一级碟簧固定,目的是防止一级调节座和一级碟簧脱落,所述二级粗滤芯进口和所述二级粗滤芯出口之间安装有二级碟簧,并通过二级调节座压紧,用二级挡圈将二级调节座与二级碟簧固定。/n
【技术特征摘要】
1.一种多级旁通阀,其特征在于:旁通阀安装在一级精滤芯和二级粗滤芯顶部出油口处,且旁通阀壳体里设有油液通过的环形槽,所述一级精滤芯进口与所述的二级粗滤芯进口之间安装有一级碟簧并通过一级调节座压紧,用一级挡圈将一级调节座和所述的一级碟簧固定,目的是防止一级调节座和...
【专利技术属性】
技术研发人员:张文升,康伟,
申请(专利权)人:新乡市华航航空液压设备有限公司,
类型:新型
国别省市:河南;41
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