Mixers are generally used to deliver concrete to construction sites. Now the real estate industry is very hot, so the construction sites are busy. Self feeding mixers are also nonstop. The self feeding mixers are frequently used in the hydraulic system. Many self feeding mixers have the phenomenon of too high temperature in the hydraulic system? How to deal with such a problem? First of all, we need to know what causes it, so as to solve the problem from the root.
Causes of high temperature in hydraulic system of self feeding mixer:
1. The leakage of the hydraulic system is serious. If the set pressure of the relief valve is too high, the wear of the moving parts is too large, the sealing gap will be increased, the sealing device will be damaged, the viscosity of the oil is too low, etc., which will cause the leakage to increase. Finding out the root cause of the fault can solve the problem.
2. The heat dissipation of the hydraulic system is relatively poor, such as the insufficient heat dissipation area of the oil tank, the low oil level of the oil tank, which makes the oil circulation too fast, the insufficient supply of cooling water or the failure of the fan, and the high ambient temperature, which will lead to poor heat dissipation of the system.
3. If the viscosity of oil is too high, the hydraulic loss will be too large.
four The unloading circuit of the hydraulic system is not working well. When the unloading circuit of the mixer system is not working well or there is no unloading circuit, the oil still overflows back to the oil tank under the working pressure set by the relief valve when the mixer system does not need pressure, or flows back to the oil circuit when the unloading pressure is high. At this time, it is necessary to carefully check whether the unloading circuit of the system works normally. If the unloading oil passage is dirty If the electromagnetic valve can't work due to the blockage or electrical system fault, measures should be taken in time to eliminate it.
five If the above faults are eliminated, there is still the problem of too high temperature in the hydraulic system, which may be caused by improper handling in the hydraulic system, such as speed regulation method, system pressure, efficiency of hydraulic cylinder, pump and motor, rated flow of various valves, diameter of pipeline, volume of oil tank and unloading mode, which directly affect the oil temperature rise Analysis, in order to draw the correct conclusion. No matter what kind of fault from the feeding mixer, we must be calm, first find out the root of the fault, so as to quickly solve the problem!