The hydraulic system is the core equipment of the block moulding machine, which directly affects the production quality and equipment life of the brick machine equipment. The main reason for the heating of the hydraulic system is that the hydraulic oil is heated. The first reason is that the hydraulic system design is unreasonable, so that the hydraulic oil can not effectively dissipate heat, the second is the hydraulic component failure, and the third is the improper selection of hydraulic oil.
Unreasonable design of the block forming machine fuel tank will reduce the heat dissipation effect of the hydraulic system. The fuel tank design is unreasonable. First, the fuel tank volume is too small. The power required for the block forming machine to work is large, the heat generated is large, the fuel tank is too small, and the heat dissipation area is also reduced. Second, the fuel tank pipeline design is unreasonable, the oil suction nozzle and the oil return nozzle are close, and there is no partition in the middle, which shortens the cooling circulation of the hydraulic oil in the fuel tank and the path of impurity precipitation. The oil return directly into the suction pipe to make the tank temperature Raise. Properly increase the volume of the fuel tank or lengthen the distance between the oil suction pipe and the oil return pipe to ensure the heat dissipation cycle of the hydraulic oil and reduce the heat of the fuel tank.
The hydraulic system of the block forming machine is generally a high pressure and large flow system. If the hydraulic components in the system are mainly the reversing valve, the relief valve and the sequence valve, the large flow requirement cannot be met. When the block forming machine is in operation, the flow rate of the valve port is too high, causing large pressure and friction, and the oil temperature is increased. Therefore, when designing the hydraulic components, the hydraulic system should select the components according to the working pressure, the flow rate and the required pressure and flow adjustment range of the hydraulic components, so as to minimize the pressure loss at the valve port and reduce the The system is heated due to unreasonable selection of hydraulic components.
The hydraulic oil has different types of viscosity. When the hydraulic system of the block forming machine works, the temperature of the hydraulic oil rises, the viscosity decreases, and the leakage in the system increases, which prompts the rise of the problem and the malignancy of the oil temperature. cycle. Therefore, the choice of hydraulic oil should be based on the system's normal operating temperature requirements to select the appropriate viscosity of the hydraulic oil.
