The dosing device is a complete set of machinery and equipment with the functions of dosing, mixing, liquid transportation and intelligent control. It is used to add buffer solution, reverse osmosis scale inhibitor and bactericide to accurately add and add water treatment chemicals. Metrological verification. In the water supply and drainage treatment, a variety of organic chemicals are often added to inhibit dirt, remove bacteria and algae, solidify, and inclined plate sedimentation tank to achieve the purpose of purifying water. Dosing device is a kind of equipment in water treatment device, which undertakes the manual dosing of various sewage treatment chemicals. The machine and equipment can be fully and automatically equipped with chemicals and water according to a certain percentage, melting, improvement and metrological verification.

The dosing device is mainly composed of solvent tank, dosing pump, filtering device, valve, check valve, barometer, storage tank, liquid level transmitter and control box. The melting drum is equipped with liquid level transmitter, which is fully automatic and needs equipment for actual operation, such as low liquid level instrument, alarm and gate valve.

Common problems and solutions of dosing device:

1. There is gas in the pipeline in the pump body: discharge the gas.

2. Packing leakage is serious: tighten or replace the packing.

3. The inlet and outlet check valves are not tightly closed: check the high-pressure gate valve, clean or replace the valve ball.

4. Gas enters from the joint of the air inlet to: tighten the external thread or sealing socket.

5. Leakage of sealing gasket of inlet and outlet check valves: check the sealing surface or replace the sealing ring.

6. The gear oil is not clean, resulting in abnormalities in the operation of the three valves: replace the clean gear oil.

7. The valve often vibrates: adjust the tightness of the torsion spring, find the cause and take measures to clean it.

8. The diaphragm in the diaphragm has no close sealing: tighten the screw at the end of the water pump impeller or find the reason for cleaning.

9. The inlet pipe is blocked or the friction resistance is large: make the inlet pipe smooth and take measures to reduce the friction resistance.

10. Oil not provided by the oil supply valve, insufficient oil provided, frequently provided oil or leakage: adjust the spring plate of the oil supply valve or repair the protruding surface of the oil supply valve, clean and replace the bearing steel ball.

The dosing device adopts electromechanical integration structure, which can be divided into mobile type and mobile type (trolley type) during installation. Each liquid adding equipment is equipped with mixer, liquid adding system software and full-automatic control system. Many fixed guide rails can form a whole. Coupled with the DC frequency conversion automatic control system, it can complete the local operation, remote control, automatic control system, manual and automatic mutual conversion feeding. The dosing device has the advantages of compact structure, small size, low noise, stable operation, convenient installation and operation and convenient actual operation.