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[CN 201721753932.9] Title of lower ejector of screw press: Application number of lower ejector of screw press: CN 201721753932.9 Applicant: Forging Industry Research and Development Center of Haian Beijing Institute of Electromechanical Research; Application date of China machine forging Jiangsu co., ltd.: 2017-12-15 patent type: utility model lower ejector of screw press, involving the field of screw press, including ejector cylinder, piston rod, piston, ejector rod, upper end cover, lower end cover, the upper end of the piston rod passes through the upper end cover and the lower end passes through the lower end cover. The piston is arranged in the ejection cylinder, and the ejector rod is arranged in the piston rod; the upper end of the upper end cover is connected with a vertical guide cylindrical pin, and the ejector rod The upper end is connected with the protective cover, and the protective cover is sleeved on the guide cylindrical pin; the upper end is also connected with an oil baffle ring, which is located in the piston rod. The guide cylindrical pin not only prevents the relative rotation of the piston and the piston rod, but also plays a guiding role of ejection. The oil baffle ring on the upper end of the ejector cylinder and the protective cover on the upper end of the ejector rod are designed to form a "protective umbrella" to prevent the forging oxide scale on the screw press and the graphite liquid in the lubricating die chamber from entering the junction of the ejector cylinder and the piston rod. The surface avoids damage to the seal, prolongs the life of the ejector cylinder, and protects the normal and effective operation of the ejector cylinder.
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