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[CN 201621197546.1] Limit structure of oil return valve for hydraulic pump of press machine
[CN 201621197546.1] Title of oil return valve limit structure for press hydraulic pump: Application number of oil return valve limit structure for press hydraulic pump: CN 201621197546.1 Applicant: Changshu Tongrun Auto Repair Equipment Co., Ltd. Application date: 2016-11-7 Patent type: Utility model An oil return valve limit structure for press hydraulic pump, including hydraulic cylinder, base, air pump and pump body, with oil return valve and oil outlet on the base, features: A limiting device is added on the base and the side close to the oil return valve. The limiting device includes a limiting block. One end of the limiting block is on the base and the other end is constructed as a free end. An opening is set in the middle of the end of the free end. The screw of the oil return valve enters the base. A limiting groove is also opened on the end of the screw close to the handle, and the opening is clamped in the limiting groove, as the screw is screwed in or unscrewed, the free end of the limit block slides back and forth within the stroke range of the limit groove. When the handle is rotated to move the screw backward until the free end of the limit block abuts against the limit The side wall on one side of the groove prevents the screw from sliding outside the base. The limit device helps the oil return valve to achieve rapid adjustment, and the work efficiency is high; the screw of the oil return valve is prevented from falling off the base due to excessive rotation during the rapid adjustment process, ensuring the safety of the hydraulic pump.
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