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    抽沙船:抽沙泵出口壓力過小的原因及解決方法
    抽沙船:抽沙泵出口壓力過小的原因及解決方法 抽沙泵出口有壓力但是壓力小于正常值范圍時,我們應該檢查一下是否有以下幾個原因:
    1、抽沙泵長期沒有運行,使得葉輪、密封部位粘結,造成電機堵轉;開機前應盤動沙泵,確認轉動靈活再啟動。
    2、抽沙泵本身缺陷,盤動時候出現死點,此事時應解體檢查沙泵的零部件是否有損壞情況,并及時更換損壞零件。

    3、電氣故障,檢查電機及線路有無缺相故障,保護系統有無誤動作,保證電力系統頻率到正常值后試機。

    挖沙船

    沒有壓力可能為以下情況:
    1、管路瀉壓,可能為管路的某個部位有泄露造成瀉壓,從而使系統壓力減??;可以關閉吸沙泵出口閥門,檢查壓力情況。
    2、缺水,管道內水源不足也是壓力不足原因之一,多是由于吸沙泵施工環境中有垃圾或雜草淤堵管路進口,此時開機后能聽到水泵噪音很大,逐漸關閉出口閥門這種聲音會逐漸減小。清理吸沙泵過濾網上的淤堵并提高工況水位。

    3、葉輪腐蝕或者葉輪口環磨損;更換沙泵葉輪。

    抽沙船

     Pumping vessels: The reasons for the excessive outlet pressure of pumping sand pump and the solution to the pump outlet pressure but the pressure is less than the normal range, we should check whether there are several reasons:
    1, pumping sand pump has not been running for a long time, so that the impeller, sealing parts bonding, causing the motor to plug the switch;
    2, pumping sand pump itself defects, when it appears dead point, this event should be dissolved to inspect the sand pump parts for damage, and timely replacement of damaged parts.
    3, electrical failure, check the motor and line there is no fault, the protection system has the correct action, to ensure the power system frequency to normal after the test machine.
     No pressure may be the following:
    1, the pipeline is leaking pressure, may be a part of the pipeline leakage caused by reducing pressure, thereby reducing the system pressure; can shut down the suction pump outlet valves, check the pressure situation.
    2, lack of water, the pipeline of water shortage is also one of the reasons for pressure, many is due to the sand suction pump construction environment There is garbage or weed blockage pipeline imports, at this time after the boot can hear the pump noise is very large, gradually shut down the export valve this sound will gradually decrease. Cleaning up the suction sand pump filter on the net and improve the water level.
    3, impeller corrosion or the impeller ring wear, replace the impeller pump.



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