Analysis of current status and development direction of mining pneumatic diaphragm pump and submersible sewage pump

The pneumatic diaphragm pump for mining uses high-pressure airless spraying with high efficiency, smooth and smooth surface, strong adhesion and less coating loss, which is widely used in construction, machinery, shipbuilding and furniture industries. Mine pneumatic diaphragm pump high pressure airless spraying machine is divided into pneumatic airless spraying machine, electric airless spraying machine (piston pump) and electric airless spraying machine (diaphragm pump), because pneumatic airless spraying machine needs to bring The compressed air source limits the use of pneumatic sprayers. Now only the electric plunger airless spraying machine is compared with the electric diaphragm airless spraying machine. The plunger pump drives the plunger to move the plunger to move the paint, and then discharges it after pressing, because the plunger is exposed and the plunger Working in the paint, the plunger wears very quickly under the action of the coating. Once equipped with a nozzle with a large diameter, the plunger reciprocating frequency is increased, the wear of the plunger is aggravated, and the life of the machine is short. The replacement of the plunger is very expensive, and if the voltage is not normal, it will directly cause the working DC to be abnormal. In addition, due to the large reciprocating motion, the plunger pump has a large pulsation, which makes the spraying unstable, and the flatness of the wall sprayed by the coating is not good enough. However, the quick suction of the plunger pump is its strength. Mine pneumatic diaphragm pump airless spraying machine (diaphragm pump), its design is based on the plunger pump has been greatly improved, the principle is to use the motor to drive the piston to work reciprocally (note that the piston does not directly contact the paint), Then push the diaphragm movement, the paint is absorbed and pressurized, and then sprayed through the nozzle to the coated object. Because the piston works in the anti-wear oil, the working environment is greatly optimized, the service life is greatly improved, and the piston that has been subjected to the penetration hardening treatment is It is not easy to be damaged, and the pneumatic diaphragm pump for high-resistance pneumatic diaphragm pump made of polymer material further improves the service life of the pneumatic diaphragm pump for separation. Reliable operation is another advantage of the mining pneumatic diaphragm pump. The failure rate is extremely low, the voltage requirement is low, the environmental requirements are low, the maintenance is easy, and the maintenance cost is only about one-fifth of the plunger pump. In the face of the growing coal industry, there are more and more people working in the coal industry. In newspapers, television, and the Internet, we can see the advantages of this coal mine collapse, which coal mine explosion and other related news. Therefore, people engaged in coal mine work must pay attention to their own safety issues. Of course, we must also pay enough attention to the quality of the tools used. Mine pumps are one of the indispensable mechanical tools in coal mine work. So how can we guarantee its quality?

1. Mechanical seal: Most of the domestic mining pumps have the problem of water leakage in the machine seal, but they have to be replaced before they can be used. The main reason for the situation is that the rubber tears and causes water leakage.

2. Bearing: Use high-quality bearings to avoid problems during long hours of work.

3. Motor: Be sure to pay attention to the motor problem, because many mining pumps find super current, motor hot and so on.

Due to its advantages of simple installation, small footprint, easy maintenance and no noise, the submersible sewage pump is widely used in municipal engineering, factories, commercial, hospitals, hotels, residential areas and other sewage discharges. At present, China's domestic submersible sewage pumps are mainly produced and manufactured by domestic manufacturers, and a small number of products are imported from abroad. The market prospects are very broad. However, as the reliability of the submersible sewage pump needs to be strengthened, improving the technical content of its products is the main direction for the future development of the manufacturer.

The submersible sewage pump is a vertical arrangement, and the mining pneumatic diaphragm pump is coaxial with the motor, so that the weight of the rotating component is the same as the water pressure direction of the impeller; secondly, the submersible sewage pump is used under the liquid, and the sewage medium is conveyed. It contains impurities, sludge and other substances. Third, the submersible sewage pump is a kind of centrifugal pump. When it is running, the power always increases with the increase of the flow rate. When the flow rate exceeds the design flow rate and reaches a certain value, the motor will It will burn out due to overload. The above problems will affect the service life of the submersible sewage pump to varying degrees.

For the problems of submersible sewage pumps, some domestic manufacturers have focused on the development of the pump protection system: automatically alarm or cut off the power supply when the pump operation is abnormal. Although this method can have certain effects, and this protection is necessary, it is not the fundamental way to solve the problem. We must also focus on improving the performance of the pump to solve the problem fundamentally. The problem that the submersible sewage pump needs to solve in the future is to improve the reliability of use, adapt to various working environments, optimize its structural design, and further improve the performance of the submersible sewage pump.

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