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    液壓絞吸式挖沙船液壓設計時的要點
    液壓絞吸式挖沙船液壓設計時是有許多要點的,今天就為大家簡單介紹一下:
    (1)油箱必須有足夠大的容積。一方面盡可能地滿足散熱的要求,另一方面在液壓系統停止工作時應能容納系統中的所有工作介質;而工作時又能保持適當的液位。
    (2)吸油管及回油管應插入最低液面以下,以防止吸空和回油飛濺產生氣泡。管口與箱底、箱壁距離一般不小于管徑的3倍。吸油管可安裝100μm左右的網式或線隙式過濾器,安裝位置要便于裝卸和清洗過濾器?;赜凸芸谝鼻?5°角并面向箱壁,以防止回油沖擊油箱底部的沉積物,同時也有利于散熱。
    (3)吸油管和回油管之間的距離要盡可能地遠些,之間應設置隔板,以加大液流循環的途徑,這樣能提高散熱、分離空氣及沉淀雜志的效果。隔板高度為液面高度的2/3~3/4.
    (4)為了保持油液清潔,油箱應有周邊密封的蓋板,蓋板上裝有空氣過濾器,注油及通氣一般都由一個空氣過濾器來完成。為便于放油和清理,箱底要有一定的斜度,并在最低處設置放油閥。對于不易開蓋的油箱,要設置清洗孔。以便于油箱內部的清理。

    (5)油箱底部應距地面150mm以上,以便于搬運、放油和散熱。在郵箱的適當位置要設吊耳,以便吊運,還要設置液位計,以監視液位。

    采沙船

    (6)對油箱內表面的防腐處理要給予充分得注意。常用的方法有:
    1、酸洗后磷化。適用于所有介質,但受酸洗磷化槽限制,油箱不能太大。
    2、噴完后直接涂防銹油。適用于一般礦物油和合成液壓油,不適合含水液壓液。因不受處理條件限制,大型油箱較多采用此方法。
    3、噴砂后熱噴涂氧化鋁。適用于除水-乙二醇外的所有介質。
    4、噴砂后進行噴塑。適用于所有介質。但受烘干設備限制,油箱不能過大。

      考慮油箱內表面的防腐處理時,不但要顧及與介質的相容性,還要考慮處理后的可加工性、制造到投入使用之間的時間間隔以及經濟性,條件允許時采用不銹鋼制油箱無疑是最理想的選擇。

    挖沙船

    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.

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