Power conveying is a classic application of pneumatic diaphragm pumps, there is a need for customers in the purchase of pneumatic diaphragm pumps, the use of which matters should be noted? Failure and how to deal with it? These will be the content of this article will be introduced.
Introduction of power conveying
Analysis of the working principle of pneumatic diaphragm pump in the process of transporting powder
Pneumatic diaphragm pump for conveying powder advantage lies in the powder material in the closed management of conveying, you can avoid the operation of workers as little as possible with the powder contact, especially for some toxic and harmful powders, to ensure personal safety; to avoid the powder in the production workshop flying around the situation, reduce air pollution and waste of raw materials (supporting the use of special air release components).
Designed with airflow induction system, fluidised gas and pump motor drive gas can be separated to avoid material air contact oxidation and deliquescence, fluidised gas can be used separately for further purification and drying treatment (contact with powder), you can use other gases (such as nitrogen and other inert gases).
The system is economical, simple to install and use, unlike expensive traditional large and complex pre-installed powder conveying systems, lightweight, easy to move around and use (can be mounted on a trolley, trolleys can be customized). Ready to use, no installation or commissioning.
Precautions when transporting powder
The following precautions should be paid to the air diaphragm pump when transporting powder:
1. Keep good exhaust and ventilation, away from flammable, explosive and heat sources. The grounding requirements are in accordance with local regulations, legal requirements and some special requirements of the site.
2. Ensure that all operators are familiar with the operation and use of the pneumatic diaphragm pump and master the precautions for the safe use of the pneumatic diaphragm pump, and if necessary, allocate the necessary protective equipment.
3. Ensure that the maximum particles contained in the fluid do not exceed the maximum safe particle diameter standard of the pump.
4. The inlet pressure should not exceed the maximum allowable pressure of the pump, as compressed air higher than the rated pressure may lead to personal injury and property loss and damage to the performance of the pump.
5. Ensure that the piping system of the pneumatic diaphragm pump can withstand the highest output pressure reached, and ensure the cleanliness and normal working conditions of the driving gas system.
6. Electrostatic sparks may cause explosions resulting in personal injury accidents and property losses, use wires with a large cross-sectional area enough as needed, and properly and reliably ground the grounding screws on the pump.
7. Tighten the pump and the connecting pipe joints to prevent electrostatic sparks due to vibration and impact. Use an antistatic hose.
8. The reliability of the grounding system should be checked and tested periodically, and the grounding resistance should be less than 100 ohms.
9. The exhaust of the pneumatic diaphragm pump may contain solid matter, do not put the exhaust port towards the working area or people, so as not to cause personal injury.
10. When the diaphragm fails, the conveyed material will be sprayed out of the exhaust muffler.
Troubleshooting for pneumatic diaphragm pump
When the pneumatic diaphragm pump conveys powder, the diaphragm pump does not move or runs very slowly, what is the reason for this? We can start from the following points to check.
1. Check whether the piston activity in the air valve of the pneumatic diaphragm pump is normal.
2. Check whether the air valve of the pneumatic diaphragm pump is stuck, and clean the air valve with cleaning liquid.
3. Check whether the air valve of the pneumatic diaphragm pump is worn, and replace it with new parts if necessary.
4. Check the filter screen or air filter device at the air inlet end for impurities.
5. Check the condition of the sealing parts of the center body, if it is seriously worn, the sealing effect cannot be achieved, and the air will be discharged from the air outlet end.
6. Check the type of lubricating oil. If the added lubricating oil is higher than the viscosity of the recommended oil, the piston may jam or function abnormally. It is recommended to use a light and frost-resistant lubricating oil.
