16-inch Heavy-duty Sand Dredging Pump was Delivered to Cameroon

Heavy duty sand dredging pump is the compact multifunctional sand pump machine which can be used on the sand dredger or the land for sand or slurry suction and transport. The sand dredge pump features wear resistant parts, large spherical passage impeller, high operational efficiency, wide application,  and energy saving etc. The over-flow parts are made of wear resistant chrome alloy. The suction depth can up to 35 m; the discharge distance can up to 1000-1500 m without booster pump. The heavy duty sand dredging pump is suitable for inland river dredging, coastal embanking, coal mining, power plants and other enterprises to transport solid particles containing slurry, medium particles up to 80 mm. Sand dredge pump can also be equipped on dredger ship or boat as marine sand pump for sand and gravel pumping.  Our heavy-duty sand dredge pump has passed through the trial test and industrial operation test.

There are five types of heavy duty sand dredging pumps designed by OCEAN Pump such as  general-purpose sand pump for ships, heavy-duty sand pump for ships, large-flow sand pump, large-particle sand pump and sea blowing special sand pump. These sand pumping machines are relatively large-scale sand pump. For large-scale engineering applications with different working conditions, different types of large-scale sand suction pumps can be flexibly selected.

16 inch Sand Dredging Pump Selection Background

On March 10th, 2019, a customer from Cameroon called us. He purchased 14-inch sand dredge pump before. And the sand dredge pump had continuously pumped 600,000 cubic meters sand at all. The impeller and other accessories were also worn out. So he hoped that OCEAN Pump could choose a sand dredge pump with a higher output to replace the old pump type.
The requirements are as follows:

1. Pumping sand in the sea, with a depth of 35-40 meters;
2. The sand is clean, but the proportion is large.The gravel is generally angular, so the wear on the pump will be relatively large;
3. The discharge distance is 500 meters, basically no vertical height;
4. The bigger the output, the better.

16 inch Sand Dredging Pump Selection Process
OCEAN Pump has a 400GN-45 ( 16-inch ) sand suction pump with a flow rate up to 4500m³/h. This sand extracting pump type is very suitable for the customer. It is recommended to purchase a Cummins or Perkins 1500 horsepower diesel engine and marine gear box. The amount of sand produced in this way is at least 800 m³/h, and there is no problem within 1000 meters of discharge distance.

16 inch Sand Dredging Pump Performance Parameters

Pump model	400GN-45
Flow rate	4500 m³/h
Head	45 m
Efficiency	75%
Shaft power	735.3 kw
Supporting power	1100 kw
Speed	650 r/min

This type of sand pump has been used in several areas of Africa for a long time, the product effect is very good. Therefore, OCEAN Pump engineer is confident for the type selection. The customer also fully recognized the professional level of the technical department and immediately sets the purchase contract. The goods were shipped to Cameroon on March 20th, 2019.
About Ocean Pump
Tai’an Ocean Pump (OCEAN Pump) Co., Ltd. is the leading sand pump and sand dredger solutions manufacturer, supplier and exporter in China.We have more than 30 talented sand pump experts and 15,000 square meters factory. More than 4 series 20 kinds of sand pumps, slurry pumps, sand dredgers and related parts had been manufactured to satisfy your pumping requirements. OCEAN Pump is the Certification of New Hi-tech Enterprises by the Government. We provide our customers with a complete set of  sand, slurry, gravel pumping solutions and related parts. Our main products include centrifugal portable sand pump, marine sand pump, slurry pump, dredge pump, gravel pump, mud pump, submersible slurry pump, vertical sand pump, simple small sand pump dredger, submersible dredger, mini dredge for sale,  small dredging equipment, small pond dredging equipment, sand suction dredger,  suction dredging equipment, cutter suction dredger , sewage submersible pump, lake dredging equipment, mini dredges for sale, sand dredge machine, river dredge equipment and other parts like discharging sand pipe, floater, rubber hose. They are widely used in mining, metallurgy, coal washing, power plants, sewage water treatment and dredging in such industries as mine, chemical and petroleum. We are looking for pump dealers all over the world.

Why Mining Pumps Can’t be Used to Suck Sand?

Mining pumps are the widely used powerful sand, trash and water handling pumps for efficient dewatering and residue handling in mining industries. Mining pumps are often used to handle particle concentration less than 30% and they are not suitable for sand sucking and dredging. Some many users may select mine pump to suck sand, especially he user who just comes to sand pumping industry. As a professional sand pump machinemanufacturer, we would like  explaining this problem for selection and application of mining pump correctly.

Here are Several Reasons Why Do Mining Pumps Can’t Suck Sand

1.The air in the mining pumps case caused mining pumps can’t suck sand.

In August 2018, Our customer from Malaysia wanted to purchase our sand extraction pump. At first, he considered to put the sand extraction pump on the sand shore, it is about 20 meters away from the surface of the water, then put the rubber hose into water to pump sand. Our engineer didn’t agree with this scheme. We recommended using a jet suction dredger, putting the sand extraction pump in the jet suction dredger for pumping. Because of the air in the centrifugal sand pump case may cause the mining pumps can not suck sand.

The design principle of the mining pumps is when pump is filled with liquid, the centrifugal force is formed by the high speed rotation of the impeller, so that the water is continuously sucked from the sand suction pipe. Almost everyone knows this principle, but when choosing the mining pumps, people often ignore the vacuum suction of the mining pumps. Then vacuum suction of the normal sand pump is about 6 meters, that means when the pump is 6 meters higher than water surface, the mining pump can not suck out the water, and the proportion of the sand is larger. So if the height exceeds 2-3 metiers, the effect of the sand pumping will be greatly reduced. Therefore, in the usual selection, the engineer always advise the user to put the mining pumps in the dredger or on the welding platform, so that the vertical height from water surface to centrifugal inlet is smaller. Moreover, if there is air in the sand pumping machine during work, cavitation will occur and the wear of the pump will increase.

2. Sand quality will affect sand pumping

The mining pumps are based on the foundation of the water pump. The difference between the mining pumps and water pumps is that the mining pump impeller has a wider flow path and better passability. The overflow parts are usually made of wear-resistant materials to ensure the life of sand pumping. But the basic principle is to suck the water and sand out by centrifugal force.

Since some construction sites are perennial sediments, some will have a knot. Therefore, it is necessary to impact the sediment by means of injection. How to achieve injection? It requires a set of high-pressure water gun. Using high-pressure water to disperse the sediment at the bottom of the river, increasing the concentration of the suction, and ensuring the amount of sand. If the sand is knotted for many years and the high-pressure water can’t disperse the sediment, you can use the types of cutter suction or bucket wheel. Using a reamer or bucket wheel to stir the sediment into the water to achieve high concentration.

3. The sand pump can’t suck sand because mining pumps loss or quality problem

After the long-term continuous operation of the mining pump impeller, there will be wear, or the gap between impeller and the front plate of the sand pump will be too large, resulting in a decrease in suction force, which will affect the amount of sand discharged; the mining pumps bearing is damaged, the mining pumps vibration is too large, causing the impeller to be eccentric, which also cause the suction to be affected. At this time, it is necessary to replace the overflow components or bearings.

4. The mining pumps can’t suck sand due to mismatched equipment

There exist power matching, pipeline matching, valve matching issues. The power matching is reflected in the diesel engine or the motor is too small, the power is insufficient, resulting in a problem with the load of the sand pumping machine, which causes the equipment to stop or malfunction; the pipeline is reflected in the leakage of the suction pipe, and the wear of the gasket causes the sand pipe to leak. It will affect the suction of the pumping equipment; the valve is mainly reflected in the excessive density of the bottom valve, the sand can not enter the sand pumping tube, thus affecting the efficiency of sanding.

Usually through these four aspects of investigation, it is basically possible to determine the reasons and solutions why the mining pumps can’t suck sand. This is also the knowledge that every mining pump industry practitioner needs to learn and master.