Beyond Petroleum Equipment

31

2020

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08

What is the difference between a vertical submerged slurry pump and a submersible slurry pump

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Many users, including new practitioners of slurry pumps, often cannot distinguish between submerged vertical slurry pumps and submersible slurry pumps.

Many users, including new practitioners of slurry pumps, often cannot distinguish between submerged vertical slurry pumps and submersible slurry pumps. In terms of name, submerged and submersible slurry pumps seem similar, but there are essential differences.
We would like to introduce the concepts and characteristics of underwater vertical slurry pumps and submersible slurry pumps respectively, and then compare and analyze the differences.
The Concept and Characteristics of Vertical Submerged Slurry Pump
The so-called submerged slurry pump refers to a part (not all) of the slurry pump that needs to be submerged below the page during operation, with the pump head part under the liquid and the motor end above the liquid. In order to distinguish between SP and ZJL slurry pumps, industry insiders generally refer to SP as a submerged slurry pump. As shown in the figure
The so-called vertical slurry pump refers to a vertical slurry pump with the pump shaft perpendicular to the horizontal position. It is not customary in the industry to say that submersible slurry pumps also belong to vertical slurry pumps. However, in the industry, especially in the Shijiazhuang slurry pump field, vertical slurry pumps generally refer to ZJL type slurry pumps.
In fact, both SP submerged slurry pump and ZJL vertical slurry pump belong to submerged vertical slurry pump. The biggest feature of this type of pump is that it does not require any shaft seal, and the maximum submerged depth is generally within 3 meters. After years of dedicated research by our company, the maximum submerged depth can currently reach 10 meters.
The concept and characteristics of submersible slurry pump
From a structural perspective, a submersible slurry pump is usually vertical with the pump shaft and horizontal position, and belongs to a vertical slurry pump. However, when it works, the entire pump, including the motor part, is below the liquid level, so it is called "submersible".
In terms of usability, submersible slurry pumps are more convenient than submerged vertical slurry pumps, as they can be directly placed into the slurry.
The pump is composed of a motor and a pump, which are separated by an oil isolation chamber and a mechanical seal component. It is an electromechanical integrated product, and the motor and pump share the same shaft (rotor), with a compact structure.
The difference between underwater vertical slurry pump and submersible slurry pump
1. Submerged vertical slurry pumps are not fully submerged, while submersible slurry pumps can be fully or partially submerged;
2. When working, the underwater vertical slurry pump needs to be fixed and installed, and there must be a platform available for installation in the liquid level section. However, the submersible slurry pump does not need to be installed on a platform and can be directly immersed in the slurry to operate;
3. The general operating depth of underwater vertical slurry pumps is 3 meters, but with our company's unique technological improvement, the maximum operating depth can only reach 10 meters, while the maximum operating depth of submersible slurry pumps can currently reach 25 meters;
4. The operating depth of underwater vertical slurry pumps is generally limited by the shaft length and suction pipe, while the operating depth of submersible slurry pumps is mainly limited by the sealing pressure resistance, and the sealing device requirements are strict.
The above summarizes and introduces the concepts, characteristics, and differences between underwater vertical slurry pumps and submersible slurry pumps. We hope it will be helpful for you to understand and purchase such products. For further information, you can consult through online QQ or directly call the 400 phone number.
As an emerging product, submersible slurry pumps have many advantages, especially filling the gap in the application conditions of traditional horizontal and vertical slurry pumps. Currently, the application of submersible slurry pumps is gradually becoming more and more widespread, and market recognition is constantly increasing, especially meeting the requirements of deep water sand pumping and dredging, with depths up to 150 meters.

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