Dosing device is often called dosing dosing pump, used to measure the conveying liquid machinery, Dedro dosing pump is often used in various types of pharmaceutical adding complete equipment, so it is also called dosing pump. The following is to introduce the reasons and solutions for the failure of the metering pump dosing device, as follows:

1, the filter and the drug inlet tube are blocked. Solution: clean can;

2. Ball valves of inlet and outlet are blocked due to foreign matter. Solution: clean can;

3, the inlet and outlet valve sealing is not good, air leakage. Solution: the ball valve is forced to rotate several times, so that it is closely combined with the base;

4. The sealing ring of inlet and outlet is loose or falls off. Solution: Check must be careful up and down a total of 4;

5. The diaphragm is damaged. Solution: Replace, reinstall;

6. Connecting rod is stuck. Solution: One is maintenance, disassemble the connecting rod parts, smooth the rusty parts with a file and add lubricating oil; Second, replace the new connecting rod;

7. Motor burned. Solution: Replace;

8, the adjustment CAM is adjusted to the position of "0", and the flow rate is zero. Solution: Adjust the adjusting CAM so that its scale is not 0.

If the dosing device of the metering pump has the above fault, it can be checked according to the above method.