The birth of the first domestic self-balancing multi-stage pump for mining--Canon Action
As early as 2007, China's coal mines were in a period of rapid development. As the drainage system of the three core safety systems of coal mines, there was no multistage pump specially equipped with it. The multistage pumps used were borrowed from the market. The clean water pumps are closely matched. Due to the complex water quality of the mine underground and the large number of impurity particles, the traditional ordinary clean water pumps cannot meet the requirements of mine drainage well, resulting in a large number of problems:
First, the failure rate is high. Ordinary multi-stage pumps use a balance plate to balance the axial force generated by high-pressure water, which will cause a large degree of wear when starting and stopping. This situation is particularly serious when the water is large and large. , Resulting in low product life and high failure rate, affecting the safety of underground drainage.
Second, the anti-cavitation performance is poor. Ordinary multi-stage pumps have been used on a large scale in China for decades. Due to the domestic design and processing and casting capabilities, the anti-cavitation performance of domestic water pumps has always been a short board. The suction range is limited, resulting in the low utilization rate of the coal mine's sump.
Third, the response to emergencies is poor. Common multi-stage pumps are all land pumps and cannot be submerged under water for drainage operations. Once a sudden water inrush occurs, the pump house cannot be drained after it is flooded, and it is impossible to carry out mine rescue. .
Fourth, the operation is complicated. The drinking water filling operation process of the ordinary multi-stage pump at the start-up stage is complicated. It is generally divided into vacuum filling drinking water, manual filling drinking water, and bottom submersible pump feeding. Once the drinking water is not filled enough, when starting the machine It is easy to damage the balance plate and cause the pump to fail to work normally.
The instability of the main drainage pumps in these mines also exacerbated the occurrence of mine flooding accidents. According to incomplete statistics, there were 63 flooding accidents nationwide in 2004, 66 in 2005, 42 in 2006, and 41 in 2007. Vicious accidents have occurred from time to time, showing a high trend.
In response to the above-mentioned problems, after careful investigation and summary, Canon Pumps decided to overcome these problems and developed a multi-stage pump for mines in the true sense, contributing to the promotion of China’s mine construction and the reduction of mine flooding accidents. A strength, but also to open up the sky of Canon pump industry in the mining field.
So Canon Pump decided to set up a project to develop new products to completely solve the problem of mine drainage and make its own contribution to the national mine drainage business.
For this purpose, Canon Pumps has done product research and development in the following directions:
1. Split multi-stage pump: completely solve the problem of excessive axial force of the multi-stage pump causing damage to the balance disc. The pump always works in a state of axial force balance, reducing the failure rate of mine drainage pumps and ensuring safe production in mines ; Solve the problem of poor anti-cavitation performance of multi-stage pumps, increase the utilization rate of the sump, maintain a higher safe water level margin of the sump, better respond to sudden water inrush, and avoid flooding in the pump room. The maintenance is particularly simple, the middle is directly opened, the installation and disassembly are simple, and the maintenance time is greatly shortened.
2, self-priming multi-stage pump; to solve the problem of complicated operation in the stage of multi-stage pump filling and drinking water, the self-priming type is used to fill the drinking water in one step to avoid improper manual operation that causes the drinking water to be turned on and damages the pump.
3. Amphibious multi-stage pump; solves the problem of the failure of the water pump in flooding under the sudden large amount of water inrush, and ensures that the drainage system can continue to perform drainage operations in any state to ensure the safety of the mine.
4. Self-balancing multi-stage pump; solve the problems of high failure rate, short life, unstable working condition, low continuous working efficiency and so on.