How to debug the circulating water dosing device and what are the installation requirements?

During the commissioning of circulating water dosing device, firstly confirm the connection of power and water source, and then modulate the equipment to a suitable point for braking operation; In terms of installation, the drug dissolving box of the dosing device is the drug outlet which is higher than the drug inlet of the dosing pump, and the console should be clean and bright with the original strong magnetic field; The following is a detailed description of the relevant content.

1、 Commissioning method of circulating water dosing device

1. Check whether the water source and power supply are connected.

2. Set the control button of the electric control box to the "manual" position, and check whether each equipment is in good condition one by one, and whether the motor steering is correct (the valve on the water inlet pipe should be opened when checking the feeding motor steering).

3. Use hands to move the box float ball up and down one by one to see if the signal can be sent out normally, and then detect whether the level alarm in the hopper can work normally.

4. Put dry PAM solid powder (not less than 5kg) into the hopper, and put a suitable container at the feeding port.

5. Open the water inlet valve and press the start button of the feeding motor to start feeding at this time. After running for one minute, stop feeding.

6. Weigh the polymer in the container and make records.

7. Repeat steps 5 and 6 above, and predict the average weight of powder by feeder.

8. Repeat the above three steps and make a record. Because the feed rate is controlled and the speed of the feeder is known, the feed rate curve can be drawn for future reference. It can also directly adjust the powder dosage and water inflow to a certain value to prepare the solution (for example, to prepare 5 ‰ PAM solution of 1000L / h, the powder dosage can be directly adjusted to 5kg / h, and the water inflow can be 1000L / h).

9. Stop the feeder.

10. Turn the control switch in the electric control box to the "automatic" position.

11. When the liquid level reaches the high level, the feeder shall be able to stop automatically and stop the water inflow at the same time, and start the metering pump (or open the vent ball valve of the liquid storage chamber). When the liquid level reaches the low level, the feeder shall be able to start the feeding and water inflow automatically.

12. Adjust the stroke of the metering pump to the appropriate point, and then it can enter the automatic operation state.

2、 Installation requirements of circulating water dosing device

1. The nozzle of the dosing pipe should be in the reverse flow direction and inserted in the center line of the medium pipe. The dosing pipe is 10-15mm stainless steel pipe, and 10 2mm holes are evenly opened around the accessories of the pipe end.

2. In order to increase the representativeness of sampling, the sample tube is inserted into the medium tube countercurrent and straight through 3 / 4 places, and several 3mm diameter small holes are drilled in 1 / 3-2 / 3 of the end of the sample tube.

3. The distance between the dosing entrance and the sampling entrance should be 10-15m.

4. The length of sample water pipeline between sampling point and pH meter electrode should be more than 20m. Because most of the power plant pipelines have been finalized and it is inconvenient to change, this situation has been fully considered in the program design of the controller.

5. The control cabinet shall be clean, bright, non corrosive, far away from strong magnetic field, with temperature less than 45 ℃ and humidity less than 85%.

6. The dissolution box should be installed so that the drug outlet is higher than the drug inlet of the dosing pump.

The above is all about "how to debug the circulating water dosing device, what are the installation requirements", I hope it can help you.