The invention discloses a leakproof seal cushion for oil pump, which is used between the oil pump body and the pump cover. The outer edge shape of the sealing pad is the same as the outer edge shape corresponding to the oil pump body and the combined surface of the pump cover. The sealing pad has a rotor hole, an oil outlet, an oil sucking hole and an installation hole, and the positive and reverse sides of the seal are all around the rotor hole. An annular oil unloading groove is arranged on the oil outlet hole and the oil suction hole, and the annular oil unloading groove is communicated with the oil suction hole. By setting the ring unloading tank, the sealing pad is divided into two parts in the ring and outside the ring, which is equivalent to the internal and external two seal belts formed between the oil pump body and the combined surface of the pump cover. When the oil pump works, the pressure oil leaks into the joint surface and first breaks through the inner sealing belt and enters the annular unloading tank, due to the annular unloading tank and the oil suction hole. Or the cavity is connected, and the suction chamber produces negative pressure in the work, prompting the pressure oil that penetrates into the ring unloading tank to form extrusion and then quickly returning to the oil suction chamber, so it can prevent the bad phenomenon of leakage of pressure oil into the oil pump in vitro.
【技术实现步骤摘要】
一种机油泵防渗漏密封垫
本专利技术涉及一种机油泵防渗漏密封垫。
技术介绍
泵的泄露是泵业制造的一大难题,特别是中、高压泵更为突出,不但泄露机油造成浪费、污染空气,同时造成泵内压力降低、机油量较少,导致泵体使用寿命降低。
技术实现思路
本专利技术的目的在于提供一种机油泵防渗漏密封垫,解决现有技术中机油泵以漏油的技术问题。本专利技术为了解决上述技术问题,采用如下技术方案:一种机油泵防渗漏密封垫,用于设置在机油泵体和泵盖之间,起到防机油渗漏的作用,密封垫的外缘形状与对应机油泵体、泵盖结合面的外缘形状相同,密封垫的上开设有转子孔、出油孔、吸油孔和安装孔,密封垫的正、反面均绕转子孔、出油孔和吸油孔开设有环形卸油槽,环形卸油槽与吸油孔连通;机油泵体的进油腔、出油腔在密封垫上投影位于环形卸油槽的内部。通过设置环形卸油槽,将密封垫分为环内和环外两部分,相当于在机油泵体和泵盖结合面之间构成了内外两道密封带,在机油泵工作时,形成的压力油渗漏到结合面时,必定先突破内封闭带,进入环形卸油槽中,由于环形卸油槽与吸油孔或腔相通,而吸油腔在工作中产生负压,促使渗入环形卸油槽中的压力油形成挤压,则迅速回到吸油腔中;而外围密封带在无压力油的情况下,不会向体外渗漏,因此可以防止压力油向机油泵体外泄露的不良现象发生。进一步改进,所述密封垫的厚度为0.15-0.20mm,环形卸油槽的深度为0.04-0.06mm,环形卸油槽的宽度为0.04-0.06mm。进一步改进,所述密封垫采用四氟乙烯或经过退火处理的铜制成,经退火处理的铜比较软,四氟乙烯或经过退火处理的铜具有一定的弹性,具有较好的密封性能。进一步 ...
【技术保护点】
1.一种机油泵防渗漏密封垫,用于设置在机油泵体和泵盖之间,其特征在于,密封垫的外缘形状与对应机油泵体、泵盖结合面的外缘形状相同,密封垫的上开设有转子孔、出油孔、吸油孔和安装孔,密封垫的正、反面均绕转子孔、出油孔和吸油孔开设有环形卸油槽,环形卸油槽与吸油孔连通;机油泵体的进油腔、出油腔在密封垫上投影位于环形卸油槽的内部。
【技术特征摘要】
1.一种机油泵防渗漏密封垫,用于设置在机油泵体和泵盖之间,其特征在于,密封垫的外缘形状与对应机油泵体、泵盖结合面的外缘形状相同,密封垫的上开设有转子孔、出油孔、吸油孔和安装孔,密封垫的正、反面均绕转子孔、出油孔和吸油孔开设有环形卸油槽,环形卸油槽与吸油孔连通;机油泵体的进油腔、出油腔在密封垫上投影位于环形卸油槽的内部。2.根据权利要求1所述的机...
【专利技术属性】
技术研发人员:魏水源,
申请(专利权)人:南京腾源机械制造有限公司,
类型:发明
国别省市:江苏,32
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