What are the safety operating procedures for small submersible pumps?

First, place the submersible pump in a sturdy basket and then into the water. You can also set up sturdy guardrails around the pump in the water. The pump should be upright in the water, the water depth should not be less than 0.5m, and it should not be used in water containing sand. So what are the safety operating procedures for small submersible pumps?

What are the safety operating procedures for small submersible pumps?

1. When placing the submersible pump in the water or lifting it out of the water, the power should be cut off first. Pull the power cable or water pipe.

2. The submersible pump should be equipped with a grounding or leakage protection device. Do not immerse the water within 30 meters of the pump into the water within 30 meters. No person or animal should be inside.

3. Pre-start inspection items should meet the following requirements:

(1) Water pipes are securely fastened.

(2) Venting, draining, oiling, etc., are not blocked.

(3) There are no foreign objects in the impeller and inlet.

(4) The cable insulation is good.

4. After turning on the power, test run first, check if the direction of rotation is correct, and the running time outside the water should not exceed 5 minutes.

5. The water level should be observed frequently. The horizontal distance from the center of the impeller should be between 0.5 and 3.0m. The cable should not rub against the walls and pool walls.

6. For new pumps or new sealing rings, after 50 hours, open the water seal and check the amount of water and oil leakage. When the leakage exceeds 5ml, a 0.2MPa pressure test should be carried out to detect the cause and eliminate it. It should be checked once a month; when the leakage does not exceed 25ml, it can be continued. After inspection, you should use the specified lubricant.

7. The oil-immersed submersible pump after repair should be subjected to a 0.2MPa pressure test to check for leaks in all parts, and then add lubricant to the upper and lower housings.

8. When the temperature drops below 0, after stopping operation, the submersible pump should be removed and stored indoors away from the water surface.

9. The insulation resistance of the motor stator winding should be measured weekly, and the value should be reduced.

What are the main types of small submersible pumps?

Submersible pumps can be divided into submersible pumps, submersible pumps, submersible pumps, sand pumps, and mining pumps.

1. Subway pump: The submersible pump is a multi-stage pump, mainly used to extract water from clay layers, machine wells, earth wells, or reservoirs, suitable for factories, mines, or farmland irrigation.

2. Working face submersible pump: The working face submersible pump is a small submersible pump (single pump). Due to its simple installation and convenient use, it is widely used in many places.

3. Subway pump: Submersible pumps are mainly used for conveying industrial wastewater and urban domestic sewage. Its great advantage is that it can handle impurities such as column paste and long fibers. Therefore, it is also called "non-sewage submersible pump" and is widely used in urban sewage treatment plants, rainwater pools, pump stations, flood control, and irrigation.

4. Dewatering submersible pump: The dewatering pump is designed for drainage environments rich in mud and sand in the water and is a new product that fills the international gap. It has the characteristics of high wear resistance and is suitable for mining, engineering excavation, disaster relief, environmental protection, and other water drainage. When draining in a silt sedimentation environment, the lifespan is 5-10 times that of submersible pumps and submersible pumps.

5. Mining vertical pump: It is an integrated product of vertical pump and submersible pump. It can be used as a submersible pump or a fixed pump. The advantages of submersible pumps and fixed pumps have surpassed the concept of submersible pumps. A true "amphibious pump." From the development of submersible pumps, the mining pump is the "landing" evolutionary product of the submersible pump.