How to deal with the insufficient air pressure of the hydraulic pressure gauge of the concrete feeding mixer, what to do if there is a problem with the hydraulic system of the concrete feeding mixer, and when the air pressure of the hydraulic system of the mixer is insufficient or no pressure at all, we can check in turn according to the following aspects.

1、查看混凝土上料攪拌機(jī)液壓泵是否能輸出液壓油。如果是新的液壓泵，無(wú)液壓油輸出，可能是泵體有鑄造缺陷(縮孔、砂眼等)，使吸油腔和壓油腔相通，失去壓油能力，應(yīng)及時(shí)找廠家更換。若不是新的液壓泵，無(wú)液壓油輸出，則可能是泵的轉(zhuǎn)向不對(duì)，零件磨損嚴(yán)重或損壞，及時(shí)更換。

1. Check whether the hydraulic pump of concrete feeding mixer can output hydraulic oil. If it is a new hydraulic pump and there is no hydraulic oil output, it may be that the pump body has casting defects (shrinkage cavity, sand hole, etc.), so that the oil suction cavity is connected with the oil pressure cavity and the oil pressure capacity is lost. It should be replaced by the manufacturer in time. If it is not a new hydraulic pump and there is no hydraulic oil output, it may be that the steering of the pump is not right and the parts are seriously worn or damaged, so it should be replaced in time.

2、若混凝土上料攪拌機(jī)液壓泵有油液輸出，查看溢流閥工作是否正常。若不正常，則可能是壓力油路中的某個(gè)閥有污物或其他原因卡住，處于回油位置，致使壓力油路與溢流回路短路，也可能是管接頭松脫，或處于壓力油路中的某些閥泄漏嚴(yán)重，或液壓缸、液壓馬達(dá)的密封損壞，嚴(yán)重泄漏。排除方法是拆開(kāi)有關(guān)閥進(jìn)行清洗，檢查密封間隙的大小及各種密封裝置，密封裝置損壞應(yīng)更換。

2. If the hydraulic pump of concrete feeding mixer has oil output, check whether the overflow valve works normally. If it is abnormal, it may be that one of the valves in the pressure oil circuit is stuck in the oil return position due to dirt or other reasons, resulting in a short circuit between the pressure oil circuit and the overflow circuit. It may also be that the pipe joint is loose, or some valves in the pressure oil circuit are seriously leaking, or the seals of the hydraulic cylinder and hydraulic Mada are damaged, resulting in serious leakage. The elimination method is to disassemble the relevant valve for cleaning, check the size of the sealing gap and various sealing devices, and replace the damaged sealing device.
               

3、若水泥混凝土上料攪拌機(jī)的液壓泵輸出流量隨壓力升高而顯著減小，且壓力達(dá)不到規(guī)定值，則是由于液壓泵磨損后間隙加大所致。排除方法是測(cè)定液壓泵的容積效率，即可確定該泵是否能繼續(xù)使用，對(duì)磨損嚴(yán)重的零件，應(yīng)進(jìn)行修配或更換。

3. If the output flow of the hydraulic pump of the cement concrete feeding mixer decreases significantly with the increase of the pressure, and the pressure does not reach the specified value, it is due to the increase of the gap after the wear of the hydraulic pump. The elimination method is to measure the volumetric efficiency of the hydraulic pump, which can determine whether the pump can continue to be used. The parts with serious wear should be repaired or replaced.

4、混凝土上料攪拌機(jī)的液壓系統(tǒng)能建立正常壓力，而某些管路或液壓缸(或液壓馬達(dá))中無(wú)壓力，則可能是由于管路、小孔或節(jié)流閥、換向閥等部位堵塞。此時(shí)應(yīng)逐段檢查壓力和有無(wú)油液通過(guò)，找出原因，加以排除。

4. The normal pressure can be established in the hydraulic system of the concrete feeding mixer. If there is no pressure in some pipelines or hydraulic cylinders (or hydraulic motors), it may be due to the blockage of pipelines, small holes, throttle valves, directional valves, etc. At this time, it is necessary to check the pressure section by section and whether there is oil passing through, find out the cause and eliminate it.

以上就是混凝土上料攪拌機(jī)壓力不足的處理方法，如若攪拌機(jī)出現(xiàn)液壓系統(tǒng)壓力不足或完全無(wú)壓力的情況就可根據(jù)以上的方法排查與，讓攪拌機(jī)及時(shí)恢復(fù)正常狀態(tài)。

The above is the treatment method for insufficient pressure of concrete feeding mixer. If the hydraulic system pressure of the mixer is insufficient or there is no pressure at all, it can be checked and solved according to the above methods, so that the mixer can return to normal state in time.