The small mixer is a kind of machinery commonly used in the construction industry, which reduces the labor force for the construction personnel and also saves the cost. However, we always have various problems in the process of using, which makes the construction personnel suffer from troubles. The following small series is an answer to the problems of the self gravity pressure regulation of the small mixer:

1.查看液壓泵是否可以輸出液壓油。假如是沒有輸出液壓油的新型液壓泵，則泵體或許存在鑄造缺陷，因此吸入室和液壓室相連，油壓下降，而且制造商應及時替換。假如不是新的液壓泵，而且沒有液壓油輸出，則或許無法正確操作泵，而且零件或許會嚴峻磨損或損壞。

1. Check whether the hydraulic pump can output hydraulic oil. If it is a new type of hydraulic pump without output hydraulic oil, the pump body may have casting defects, so the suction chamber is connected with the hydraulic chamber, the oil pressure drops, and the manufacturer should replace it in time. If it is not a new hydraulic pump, and there is no hydraulic oil output, the pump may not operate correctly, and the parts may be severely worn or damaged.

2.假如液壓泵有油輸出，請查看安全閥是否正常作業。假如反常，則壓力油回路中的閥或許由于其他原因被污染或堵塞，而且處于回油方位，導致壓力油回路與溢流回路短路，或許管接頭或許松動或受壓。油路中的某些閥泄漏嚴峻，或許液壓缸和液壓馬達的密封件損壞，導致嚴峻泄漏。

2. If the hydraulic pump has oil output, please check whether the safety valve works normally. If it is abnormal, the valve in the pressure oil circuit may be polluted or blocked due to other reasons, and it is in the oil return direction, resulting in a short circuit between the pressure oil circuit and the overflow circuit, or the pipe joint may be loose or pressurized. Some valves in the oil circuit have severe leakage. Maybe the seals of the hydraulic cylinder and hydraulic motor are damaged, leading to severe leakage.

3.假如液壓泵的輸出流量隨壓力的增加而明顯下降，但壓力未到達規定值，則是由于液壓泵磨損后間隙的增加所致。

3. If the output flow of the hydraulic pump decreases obviously with the increase of the pressure, but the pressure does not reach the specified value, it is due to the increase of the clearance after the wear of the hydraulic pump.

4.假如小型攪拌機的整個液壓體系可以樹立正常壓力，而且某些管線或液壓缸（或液壓馬達）中沒有壓力，則或許是由于管線，小孔或節流閥，方向閥等引起的。進行封鎖時，應逐個查看壓力和機油以找出原因并進行整理。

4. If the whole hydraulic system of the small mixer can establish normal pressure, and there is no pressure in some pipelines or hydraulic cylinders (or hydraulic motors), it may be caused by pipelines, small holes or throttle valves, directional valves, etc. When blocking, check the pressure and oil one by one to find out the cause and sort it out.

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