发明名称 A GUARD FOR CONTROLLING MATERIAL DISPERSION IN A DRILLING PUMP
摘要 <p>A guard shroud for use in a pump is provided. The guard shroud comprises a plurality of shroud ring portions (4, 8) comprising channel sections with edge portions, which when arranged in a ring and connected along adjacent edge portions define a shroud ring; and an end plate that substantially closes one end of the shroud ring and is provided with an opening, wherein when the shroud ring is positioned around an outer surface of an open end of a cylinder liner (5), the end plate substantially closes the open end of the cylinder liner with the opening substantially coaxial with the cylinder liner so as to provide access for a piston rod (1). The guard shroud prevents external impurities from entering the lubricant oil.</p>
申请公布号 WO2013143106(A1) 申请公布日期 2013.10.03
申请号 WO2012CN73276 申请日期 2012.03.30
申请人 SICHUAN HONGHUA PETROLEUM EQUIPMENT CO., LTD.;HUANG, SHUNJUN 发明人 HUANG, SHUNJUN
分类号 F04B53/18 主分类号 F04B53/18
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