The utility model discloses a direct-acting balanced relief valve, which comprises a valve shell and a valve spool, the valve spool sleeve is arranged in the valve shell, one end of the valve shell is fixed with a valve seat, and the other end of the valve shell is fixed with a spring for the end of the pressure relief valve spool. The valve spool comprises the front, middle and rear segments, and the cross-sectional area of the middle section is larger than the rear section. The cross-sectional area of the rear section is larger than the cross-sectional area of the seat hole of the valve seat. A chamber is arranged between the rear section and the valve shell, and a valve core hole connected to the chamber is arranged at one end of the valve core near the valve seat; a first sealing ring is arranged in the sealing groove of the outer wall of the middle section, and a second sealing ring is arranged in the sealing groove of the outer wall of the rear section. The utility model has the advantages of practicality, low production cost, novel structure, improvement of the valve core structure, and offsetting part of the thrust produced by the valve core and the working thrust of the valve core, so as to overcome the disadvantages of large spring force and achieve the purposes of small volume, low cost, convenient and easy operation.
【技术实现步骤摘要】
一种直动平衡式溢流阀
本技术涉及一种溢流阀,特别涉及一种直动平衡式溢流阀。
技术介绍
直动式溢流阀在泵站系统中常作为调压阀用,使用非常广泛,随着泵站系统压力越来越高,流量越来越大,尤其是压力越来越高,普通直动式溢流阀已经很难适应,特别调压时非常费力,客户反响较大,如果改用先导式溢流阀,不但体积大,结构复杂,成本还高,为了克服上述难度,必须寻求其它途经来解决。
技术实现思路
本技术所要解决的技术问题是针对现有技术的不足,提供一种直动平衡式溢流阀。为了实现上述目的,本技术所采取的措施:一种直动平衡式溢流阀,包括阀壳和阀芯,阀芯套设在阀壳内,所述的阀壳的一端固定安装有阀座,阀壳的另一端安装有顶压阀芯末端用的弹簧,阀芯包括前段、中间段和后段,中间段的横截面积大于后段的横截面积,后段的横截面积大于阀座的座孔横截面积,后段与阀壳之间设置有一个腔室,阀芯靠近阀座的一端开设有连通到该腔室的阀芯孔;所述的中间段外壁的密封槽内套设有第一密封圈,后段外壁的密封槽内套设有第二密封圈;所述的阀芯靠近阀座一端设置为与阀座的座孔接触的锥形面。本技术的有益效果:实用,生产成本低,结构新颖,阀芯结构的改进 ...
【技术保护点】
1.一种直动平衡式溢流阀,包括阀壳(1)和阀芯(2),阀芯(2)套设在阀壳(1)内,其特征在于:所述的阀壳(1)的一端固定安装有阀座(3),阀壳(1)的另一端安装有顶压阀芯(2)末端用的弹簧(4),阀芯(2)包括前段(2‑1)、中间段(2‑2)和后段(2‑3),中间段(2‑2)的横截面积(D2)大于后段(2‑3)的横截面积(D3),后段(2‑3)的横截面积(D3)大于阀座(3)的座孔横截面积(D1),后段(2‑3)与阀壳(1)之间设置有一个腔室(5),阀芯(2)靠近阀座(3)的一端开设有连通到该腔室(5)的阀芯孔(2‑4)。
【技术特征摘要】
1.一种直动平衡式溢流阀,包括阀壳(1)和阀芯(2),阀芯(2)套设在阀壳(1)内,其特征在于:所述的阀壳(1)的一端固定安装有阀座(3),阀壳(1)的另一端安装有顶压阀芯(2)末端用的弹簧(4),阀芯(2)包括前段(2-1)、中间段(2-2)和后段(2-3),中间段(2-2)的横截面积(D2)大于后段(2-3)的横截面积(D3),后段(2-3)的横截面积(D3)大于阀座(3)的座孔横截面积(D1),后段(2-3)与阀...
【专利技术属性】
技术研发人员:刘俊瑛,李洋,董海峰,顾国新,季刚,
申请(专利权)人:无锡市圣诺高压泵科技有限公司,
类型:新型
国别省市:江苏,32
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