The bin pump system is used powder material fluid and pressure gradient technology to convey the powder material.
According to technological process, XYB-s bin pump system is selected. The pump’s character is suit to transport the powder materials that is the big density, high moisture content. The bin pump’s control kernel is Simems-s PLC, and the control panel is used graphical user interface.
Before the operation of the system, check whether the equipment is in good condition, whether the compressed air meets the requirements, whether each manual ball valve is opened to the appropriate position, and whether the power supply is normal.
Please read the diagram for the structure and the accessories of the bin pump in the, the manual ball valve is the main pneumatic air valve, the valve will fully open when the system is working, and fully close when the system is maintaining or stopping long time. the manual ball valve is used to mist the powder material, it is used to adjust the transportation density. the manual ball valve is used to fluidify the powder material and adjust the transportation density. the manual ball valve is used to supplement conveying pneumatic air, it can decrease transportation density further (or it is used to dredge the transportation pipes when the pipes blocked. When dredging the pipes, the valve need fully open, and the valve, the valve need fully close). The valves are interrelated; we need adjust the opened degree with the valves again and again to increase efficiency. The value on the pressure transmitter is about 0.3MPa, usually, if the value is bigger, the conveying may be failed.
Turn on the power of the control panel; the screen will display an initial graphics (graphics 1). And press the “Powder material conveying pump system” to enter the running graphics ( graphics 2).
All the buttons are the state switch, the state will change when pressing the button. At first, we ought to select a running mode: “manual” or “auto”, “manual” is running by the manual, “auto” is running by the PLC. To press the button under the “Auto” when we need to auto run mode. And press the button under the “Manual” when we need to manual run mode.
When the work mode is manual, we can operate the feed valve, discharge valve, exhaust valve and injection valve by manual. When the system is running, the “Run process” can observe the states of the electronic valves.
In front of the “Run process”, it has 4 frames and the frames will display the state of the electronic valves. The next 2 frames will display the state of the material level and the bin pump. “Date display” is display the pressure value and the running time. The time of the feeder and the conveying display only on the “auto” mode.
3）The parameters set
The “Date setting” can set the parameters about the bin pump auto run mode.
Feeding time setting：at first, we need to calculate time about feeding a full pump actually. The parameter value ought to be bigger than the actually time. (In the manual mode, open the 14 discharge valve (manual exhaust) and the 11 feeder valve, then start recording the feeder powder material time, if the 10 level metering is send message, close the feeder valve and the discharge valve, calculate the time value and input the value to the box.
Delivery time setting：we need to calculate time about conveying actually. The parameter value ought to be bigger than the actually time. (In the manual mode, close the 11 feeder valve and the 14 discharge valve (manual exhaust), open the 17 pneumatic switch valve and the 4 switch valve for compressive air (manual inject valve), then start recording the conveying time (use second as unit), observing the pressure value on the pressure transmitter on the bin pump, if the value decreases slowly or stops decreasing, the powder material is conveying finished. Calculate the time value and input a bigger value to the box.
Low air pressure setting：the parameter set ought to accord to the local case, usually, it is bigger than 0.35-0.4MPa.
High air pressure setting：when the running mode is “auto” and the pressure value is lower the value, the exhaust valve can not open. The parameter value ought to be smaller than the pressure value about the air compressor. Usually, the value is bigger than 0.5 MPa.
Low pump pressure setting：the parameter value is used to check the state of the pipes for the conveying. When the pump is conveying state, because the materials reduce, the air pressure value will decrease. When the actually pressure value is smaller than the parameter value 10 seconds, it means the conveying process is end. Usually, the parameter value ought to be bigger a little than the min pressure value.
High pump pressure setting：when the mode is “auto” and the actually pressure value is higher than the parameter value 20 seconds, it means the pipes for the conveying is blocking. The control system will display alarm about blocking. The system will stop after blocking is 30 seconds. The alarm will display until the alarm is removed by user. (The value ought to be smaller a little than the compressive air value.)
4）”Auto” run mode
When the mode is changed to the “Auto”, the system will run according to PLC program. It displays the status of all the valves on the screen.
It must convey all the materials in the pump and flow 5 minutes before stopping.
1) When the transportation pipes is blocked, we ought to change the running case to the manual mode, close the 5 manual ball valve and the 7 manual ball valve , open the 19 manual ball valve fully and the 4 switch valve for compressive air. If the value on the 2 pressure transmitter is equality to the compressive air, we can strike lightly transportation pipes. Note: we cannot strike drastically the ceramic bow pipes to avoid smashing the pipes.
2) When the transportation pipes wears, the fluidifying powder material rush to the live, we must close the 1 manual ball valve.
3) The running process of the bin pump system: it feeds powder material to depend the 10 level metering and the feeding time, if the level metering is not a message long time, the system depends the feeding time, then we ought to check the level metering to ensure the metering is good. When the system conveys material, it depend the pressure value and the transportation time, so the transportation time value must be suit, if the value is smaller, the transportation cannot finish and the pipes may be blocked, if the transportation finished depending on the time, we ought to check the pressure transmitter to ensure it is good.
4) When the system begins working, or the system is not working until a long time, it must work by “Manual” mode at first. To open the exhaust valve and injection valve and flows 5 minutes.
5) Flow 5 minutes before stopping.
6) In the “Manual” running mode, it must close the feeder valve immediately when the material level is display to avoid the valve can not full close.