However, the investment in these two methods is relatively high. In China, two methods are generally used for river dredging: cutter suction dredger and excavator combined with a dredger. Operators should operate carefully, pay attention to changes in data such as pressure and current, and adjust the position of the sand pump in time to ensure the best depth and posture.Because the concentration in the sand pumping process varies greatly, and it fluctuates from high to low, the protection of the motor is particularly important. The control box can issue an early warning and cut off the power in the event of water ingress, overload, lack of phase, and leakage of the motor, so as to protect the pump. Equipped with the dedicated control box for the submersible dredge pumps.If there is a hardened sand layer, an electric or hydraulic reamer device must be added, and the shape of the teeth of the reamer must be specially made to maximize its effect. In this way, the ordinary uncompacted sand layer can be washed away, and the concentration of sand absorption will be greatly increased. The flow rate of the high-pressure water pump is generally about 30% of the flow rate of the sand pump, and the head is above 50 meters. Install a high-pressure water pump flushing device.And the passing capacity is strong, and it is not easy to cause blockage inside the pump body. The flow parts of the pump are thickened and made of high chromium wear-resistant alloy material, which has good wear resistance and long service life. When the sand source is mostly coarse sand, a large-particle submersible sand pump should be used.In the environment of sand pumping and sand mining, the following points should be paid attention to when selecting submersible sand pumps: It can be used in shallow and deep water and is welcomed by many customers. It only needs to simply float and install a gantry for hoisting. It does not need to be a special sand pumping boat. The operation of the submersible dredge pumps is convenient and flexible, and it is not restricted by suction when in use. In order to give users a comprehensive understanding, we will introduce in detail the comprehensive characteristics of the submersible sand pump, as well as the improved technology in various environments, so as to be suitable for applications in different working conditions. The so-called submersible dredge pumps of most manufacturers are almost unusable, or will soon be scrapped. As a result, many manufacturers are competing to imitate, and there are many low-quality products. Later, after continuous technical improvement, it was suitable for use under a variety of working conditions. The original dredge pump type was specially designed by the OCEAN PUMP technical team in the 1990s for sand pumping and dredging of the Yellow River. The listed various names are commonly called by customers according to different working conditions, that is, what environment or what kind of process is called. Submersible dredge pumps are also called submersible sand suction pumps, submersible dredging pumps, submersible slurry pumps, submersible mud pumps, etc.
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