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（1）油箱必须有足够大的容积。一方面尽可能地满足散热的要求，另一方面在液压系统停止工作时应能容纳系统中的所有工作介质；而工作时又能保持适当的液位。
（2）吸油管及回油管应插入最低液面以下，以防止吸空和回油飞溅产生气泡。管口与箱底、箱壁距离一般不小于管径的3倍。吸油管可安装100μm左右的网式或线隙式过滤器，安装位置要便于装卸和清洗过滤器。回油管口要斜切45°角并面向箱壁，以防止回油冲击油箱底部的沉积物，同时也有利于散热。
（3）吸油管和回油管之间的距离要尽可能地远些，之间应设置隔板，以加大液流循环的途径，这样能提高散热、分离空气及沉淀杂志的效果。隔板高度为液面高度的2/3~3/4.
（4）为了保持油液清洁，油箱应有周边密封的盖板，盖板上装有空气过滤器，注油及通气一般都由一个空气过滤器来完成。为便于放油和清理，箱底要有一定的斜度，并在最低处设置放油阀。对于不易开盖的油箱，要设置清洗孔。以便于油箱内部的清理。
（5）油箱底部应距地面150mm以上，以便于搬运、放油和散热。在邮箱的适当位置要设吊耳，以便吊运，还要设置液位计，以监视液位。
1、酸洗后磷化。适用于所有介质，但受酸洗磷化槽限制，油箱不能太大。
2、喷完后直接涂防锈油。适用于一般矿物油和合成液压油，不适合含水液压液。因不受处理条件限制，大型油箱较多采用此方法。
3、喷砂后热喷涂氧化铝。适用于除水-乙二醇外的所有介质。
4、喷砂后进行喷塑。适用于所有介质。但受烘干设备限制，油箱不能过大。
考虑油箱内表面的防腐处理时，不但要顾及与介质的相容性，还要考虑处理后的可加工性、制造到投入使用之间的时间间隔以及经济性，条件允许时采用不锈钢制油箱无疑是最理想的选择。
HYDRAULIC CUTTER Suction dredger Hydraulic design is a lot of points, today for you to brief introduction:
(1) The tank must have a large enough volume. On the one hand, as far as possible to meet the requirements of the heat dissipation, on the other hand, the hydraulic system should be able to stop working on all the working medium, while working to maintain the appropriate level of liquid.
(2) suction tubing and return tubing should be inserted below the minimum liquid level to prevent air bubbles from suction and oil splashing. Guan Kou and bottom of the box, the wall distance is not less than 3 times times the diameter of the tube. Suction tubing can be installed about 100 μm mesh or slot type filters, the installation location to facilitate the loading and unloading and cleaning filters. The back tubing mouth is inclined to cut 45 ° angle and face to the wall of the box to prevent the oil from returning to the sediment at the bottom of the tank, and it is also conducive to heat dissipation.
(3) The distance between the suction tubing and the back tubing should be as far as possible, between the partitions should be set up to increase the flow of fluid circulation, so that can improve the heat dissipation, separation of air and precipitation magazine effect. The clapboard height is the 2/3~3/4 of the liquid level.
(4) In order to keep the oil clean, the tank should have a perimeter sealed cover plate, cover plate with air filter, oil injection and ventilation generally by an air filter to complete. To facilitate the release of oil and clean up, the bottom must have a certain slope, and the lowest set of discharge valve. For the oil tank that is not easy to open, set the washing hole. To facilitate the clearance of the tank inside.
(5) The bottom of the tank should be more than 150mm from the ground to facilitate handling, oil discharge and cooling. In the appropriate location of the mailbox to set the hanging ear, so that the lifting of the transport, but also set up the level meter to monitor the liquid level.
(6) To give full attention to the anti-corrosion treatment of the inner surface of the tank. Common methods are:
1. Phosphating after pickling. Applicable to all media, but is restricted by pickling phosphate trough, the tank cannot be too large.
2, spray after the direct coating antirust oil. Applicable to general mineral oil and synthetic hydraulic fluids, not suitable for water-containing hydraulic fluid. Because of the limitation of processing conditions, this method is more used in large tanks.
3. Hot spraying alumina after sandblasting. Suitable for all media except water and ethylene glycol.
4, sandblasting after spraying. Applies to all media. But the drying equipment is limited, the tank can not be too large.
Considering the anti-corrosion treatment of the inner surface of the tank, not only should the compatibility with the media, but also consider the processing of the machinable, manufacturing to the use of the time between the interval and economic, conditions permitting the use of stainless steel tank is undoubtedly the most ideal choice.