Concrete batching plant common symptoms and analysis

First, Inclined belt restart fixed

Symptoms:

Blender normal startup, press the diagonal belt start button on the console, inclined belt not start.

Analysis:

1, Planetary concrete mixer does not start.

2, inclined belt repair stop switch is not reset.

3, inclined belt conveyor switch is not powered up.

4, inclined belt conveyor stop button switch is not reset.

Second, the weighing instrument static figure when excursion

Symptoms:

In a State of nature, instrument display continuous data changes.

Analysis:

Weighing instrument displays data from the sensor junction box weight transmitted electrical signals, instrument display weight fluctuation, then transferred current sensor junction box. Inner bridges damaged or sensor wiring box lugs loose will cause current fluctuations.

Process:

Remove all from a sensor in the junction box wiring, see if the meter data continue to drift. Such as instrument drift data, you can determine whether the sensor wiring loose or damaged sensor. Reattach wiring all wiring remove sensor boxes, such as instrument drift data, then the reason is due to the loose wiring, such as instrument data continued to drift, the sensor is damaged, replace the sensor can resolve. When a sensor is removed, instrument data continues to drift, you remove another sensor (removed sensor wiring do not answer), in a similar way.

Third, the mixer does not discharge

Symptoms:

In automated production process, the mixing time after zero, Mixer not unloading.

Analysis:

Under normal circumstances, mixing time after zero, mixer automatic unloading, but pressed the action in the production process on the pause button or use the mouse to click the prohibited discharge control on computer monitoring interface, mixing time then mixer will not discharge. Discharging door solenoid valve damage, discharge doors cannot be opened, Blender will not discharge.

Process:

1, check whether the counter pause button pressed, press reset.

2, check the prohibited discharge control on computer monitoring interface is activated, such as activating the Cancel.

3, check the discharge valve is working properly.

Four, mixer tightness of trip

Symptoms:

Feed mixing process, mixer due to tightness over current trip.

Analysis:

1, material too much, causing Blender overload.

2, concrete batching plant leaves between the liner and the gap is too large, the mixing process, increases the resistance.

3, v-belt is too loose, low efficiency of drive systems.

4, cover safety maintenance switch on the mixer is vibrating loose and cause downtime.

Process:

1, check that the system is over and the availability of secondary material.

2, check the mixer blades in the space between the liner and 3~8mm.

3, check the drive belt tension and adjust the system.

4, check the lid safety switch is loose on the host.

Five mixer discharge door is closed no signal

Symptoms:

Mixer after discharged, discharge door closed, but no close signal, causes the program to stop running.

Analysis:

Mixer unloading door close switch with unloading door turn handle pointers on approach distance less than 5mm-induced signal. The pump pressure when discharging the door does not meet the requirements or discharge when the door is closed is scrap stuck in the mixer, proximity switch proximity not to turn handle and the no signal, proximity switch or turn handle pointer loosing close to more than 5mm, not proximity switches inductive signal. Proximity switch is damaged there is no signal output.

Process:

1, check that the discharge valve and hydraulic system pressure is required.

2, switch to manual, discharging door mixer open and jammed scrap dropped and closed again.

Pointer

3, check the proximity switches and the handle is loose.

4, check the proximity switch is damaged.