Hydraulic oil plays the role of energy transfer, anti-wear, system lubrication, anti-corrosion, anti-rust and cooling in the hydraulic brick machine system. For hydraulic oil, the first hydraulic device should meet the operating temperature and starting temperature of the liquid viscosity requirements, each hydraulic oil has a certain range of use, too high or too low temperature on the hydraulic oil have a negative impact, so what is the impact of high and low temperature environment on the hydraulic oil? The influence of low temperature on hydraulic oil of brick machine 1. Low temperature makes hydraulic oil viscosity. If the viscosity is too high, the self-priming capacity of the oil pump will decrease, and the pressure loss and power loss of the hydraulic system will increase. It is generally believed that when the viscosity is ≥1000mm2/s, the hydraulic system cannot work normally, and when the viscosity is ≥2000mm2/ s, the hydraulic system cannot start normally. 2. Low temperature makes the water in the hydraulic oil of the brick machine solidify, and the solidified water is attached to the surface of the parts of the hydraulic valve and the oil filter, etc., which may cause the hydraulic valve to be stuck and the oil filter to be blocked, so that the hydraulic system cannot work normally. 3. Low temperature makes the rubber sealing material in the hydraulic system shrink and harden, reducing the sealing performance and even leading to seal failure. 4. Low temperature makes the hydraulic oil itself shrink, especially the brick machine hydraulic oil in the closed cavity shrink, so that the pressure drops and even produces negative pressure. The influence of high temperature on hydraulic oil of brick machine 1. The high temperature makes the hydraulic oil viscosity smaller, the viscosity is too low, the hydraulic system leakage increases, the efficiency drops, and even the hydraulic system cannot work normally. 2. High temperature makes the oxidation of brick machine hydraulic oil intensified, hydraulic oil gradually generated some ketones, acids and colloid, asphaltene and other substances, pollution of hydraulic oil, shorten the service life of hydraulic oil. When the brick machine hydraulic oil oxidation to a certain extent, hydraulic oil failure, can not be used. 3. High temperature causes the lubrication film formed on the metal surface of the friction parts to undergo chemical decomposition and the lubrication film is damaged. 4. High temperature will often lead to steel and other non-ferrous metals in the hydraulic oil corrosion intensification, resulting in surface damage to parts, corrosion at the same time. 5. High temperature is more likely to produce bubbles, which may damage the lubricating oil film, cause sintering or increase wear on the friction surface, and accelerate the oxidation and deterioration of the hydraulic oil, affecting the accuracy and sensitivity of the hydraulic components. In severe cases, it cannot meet the requirements of the hydraulic system. 6. High temperature makes the performance of rubber seals in the hydraulic system worse, which can make the rubber swell, become soft, accelerate the aging of rubber, and even seal failure. 7. High temperature makes the volume of hydraulic oil expand, so that closed in the cavity of the brick machine hydraulic oil pressure rise, causing danger.
The indicator light on the solenoid directional valve of the high quality qt12-15 cement brick making machine door is on, the pressure gauge shows the pressure, but there is no oil pressure on the oil pipe. Cause of failure: the solenoid directional valve is blocked, resulting in no oil pressure or very low oil pressure on the oil pipe in the oil cylinder of the material door. Removal method: cleaning liquid solenoid directional valve or replacement of valve parts. Fault reason: solenoid valve coil burned out, cement brick mechanical and electrical magnetic valve can not reverse. Removal method: replace the solenoid valve coil. Observe whether the solenoid valve spool is attached? Unplug the solenoid valve coil plug, press the brick machine material door open or material door close when the toggle switch, and then use a screwdriver to top the material door solenoid reversing valve valve core, the material door can move, can confirm the solenoid valve solenoid coil damage (or use a multimeter to test the coil resistance, further judgment). Material door output terminal lamp does not light brick machine did not output voltage cement brick machine factory | cement hollow bricks machine price Phenomenon: the indicator light of the input terminal of PLC can be on, the indicator light of the output terminal is not on, the brick machine has no output voltage. Cause of failure: improper setting of parameters, material door opening time is set to zero, or material door opening times is zero. If this is the reason, no burning brick machine PLC output point will flash. Elimination method: cement brick machine will be material door opening time set to 1.0 seconds, or material door opening times for 1-2 times. Cause of failure: PLC output terminal is damaged. Elimination method: if the PLC output terminal is damaged, remove the maintenance or replace the PLC can be.
1. There is air in the hydraulic system of the china block making machine for sale.
Remedy: first check whether the oil pump suction pipe or suction port flange leaks. If there is no air leakage, it is likely that there is air in the pipe that has not been removed. It can be excluded by the following methods. (Turn on the cement brick oil pump, adjust the flow of the proportional valve to the maximum, adjust the pressure to 2-3MP, then remove the screw of the vent hole next to the flow rate and the screw of the vent hole next to the pressure, and slowly exhaust until it is eliminated clean.)
2. Cause of failure: The hydraulic oil level in the tank is too low.
Remedy: add hydraulic oil to the proper level.
3. Cause of failure: The hydraulic oil of the hollow block making machine enters the water or deteriorates.
Remedy: let go of the hydraulic oil in the block making machine oil tank and pipeline, and replace with new hydraulic oil. (Before changing the hydraulic oil, clean the oil tank and filter.)
4. Cause of failure: the plum blossom cushion between the oil pump and the motor is worn.
Remedy: Replace the new plum blossom cushion with hollow block making machine.