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1、 When the main machine of the mixing plant trips due to blockage
Possible causes include:
（1） The gap between the mixing blade and the partition is too large, which enhances the frictional resistance during the mixing process
（2） The conveyor belt is too loose, resulting in lower efficiency of the transmission device
（3） The safety maintenance power switch on the top cover of the mixer was loosened, causing shutdown
The solutions include:
（1） Check if the automatic batching system exceeds the standard or if there is a situation of secondary feeding
（2） Check the gap between the mixer blades and the partition, and check the tightness of the V-belt
2、 The signal of the mixer discharge door switch is not good
Possible causes include:
When the discharge door is stuck by the finished material in the mixer when the working pressure of the oil pump does not reach the regulation or when the discharge door is closed, the proximity switch will not detect the data signal
The solutions include:
（1） Check if the working pressure of the unloading door hydraulic press system meets the requirements
（2） Check if the pins of the proximity switch and handle are loose, and if the proximity switch is damaged
3、 Uneven mixing by the mixer causes the concrete to dry and wet at the same time
Possible causes include:
When the mixing time does not meet the requirements, it is easy to cause uneven mixing, which can lead to the phenomenon of concrete being dry and wet at the same time; In addition, when the nozzle of the water spray pipe of the mixer is assembled incorrectly, it can lead to uneven watering, resulting in the phenomenon of concrete being wet while dry.
The solutions include:
（1） Check the mixing time. If the mixing time is too short, the mixing time can be appropriately extended
（2） Check if the nozzle assembly of the water spray pipe is orderly.
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