The difference between submerged pumps and submersible slag pumps, and focus on technology, performance, design details, application scenarios and other aspects of their differences in depth.
1. Comparison of working principle
Submerged pump (Submersible Pump)
Basic principle: Submersible pump is a kind of pump body completely immersed in the liquid to work. Liquid enters through the inlet of the pump body, rotates through the impeller, generates pressure and is sent to the outlet. Submerged pumps are usually used to convey relatively clean liquids such as clear water and chemical solutions.
Liquid flow path: the liquid enters the pump body from the inlet of the pump, is accelerated by the action of the impeller, and flows to the drain of the pump. Submerged pumps are generally designed as single-stage or multi-stage pumps, increasing the pumping pressure through the number of stages.
Working environment: Submerged pumps are generally used in pools, wells, chemical plants and other places, mainly for clear water or liquids without solids.
Submersible Slurry Pump (Submersible Slurry Pump)
Basic principle: Submersible slurry pump is also immersed in the liquid, but its design takes into account that the liquid may contain solid particles, sand, mud and so on. Its impeller design is specifically for high viscosity, with particulate matter of the liquid, can effectively discharge the liquid containing solids.
Liquid flow path: the impeller and pump casing design of the submerged slag pump is usually more solid, wide internal flow path to avoid particles blockage, and most of the submerged slag pump is equipped with self-priming function, can contain air in the environment of normal work.
Working environment: Submersible slag pumps are widely used in mining, slurry treatment, mining, oil drilling, environmental protection, sewage treatment and other fields, especially for liquids containing solid particles such as sand, cinder, slurry and so on.
2. Design and structure
Design of submerged pump
Pump body material: the pump body material of submerged pump usually adopts cast iron, stainless steel and other corrosion-resistant and high-pressure-resistant materials. For submerged pumps conveying chemical solutions, the pump body may be made of more corrosion-resistant plastic or alloy materials.
Impeller design: the impeller design of the submerged pump is relatively simple, mainly streamlined, focusing on the liquid flow and pressure. The clearance between the impeller and pump casing of a submerged pump is usually small, which is ideal for clear water or liquids without solid particles.
Sealing systems: Sealing systems for submerged pumps are usually simple, with a focus on waterproofing and protection of electrical components. Most submerged pumps utilize mechanical seals and oil chamber sealing technology.
Submerged Sludge Pump Design
Pump body material: the pump body material of the submerged slag pump requires more robustness and durability, usually using high wear-resistant alloy materials, hard cast iron or high-strength steel and so on. This is because the submerged slag pump needs to deal with solid particles in the liquid for a long time, the pump body and internal components are prone to wear, so the material must have high wear resistance.
Impeller design: Submersible pump impellers are typically thicker in design, with wide, sturdy blades to effectively push liquids with solid particles. In order to minimize wear and tear, many submerged slag pump impeller surface will be coated with wear-resistant coating, or even self-cooling structure.
Sealing systems: The sealing design of a submersible sludge pump is particularly complex, and in addition to basic waterproofing and electrical protection, consideration needs to be given to preventing solid particles from entering the pump and causing failures. Therefore, submerged slag pumps are usually equipped with special anti-clogging sealing device.
3. Performance comparison
Performance characteristics of submerged pumps
Flow rate and head: Submerged pumps are generally designed as high flow rate and small head pumps. They are able to work stably at high flow rates and are usually suitable for large-scale water treatment systems.
Efficiency: Since the working liquid of the submerged pump is relatively clear and does not contain solid particles, it operates with high efficiency and can work stably and continuously.
Applicable liquids: Submerged pumps are mainly suitable for the transportation of clear water, sewage, chemical liquids and other liquids, and are not suitable for the transportation of liquids containing a large number of solid particles.
Submerged slag pump performance characteristics
Flow rate and head: the flow rate of submerged slag pumps is usually small, but the head is large. They can withstand greater working pressure, suitable for working conditions that require high head.
Wear resistance: the wear resistance of the submerged slag pump is very strong, because they need to deal with liquids containing solid particles. The internal parts of the pump, especially the impeller, pump casing, bearings, etc., have strong wear resistance to ensure stability in long-term operation.
Applicable liquids: Submersible slag pumps can effectively convey liquids with solid particles, such as slurry, slurry, sand-water mixture, and so on. They can handle more viscous or particulate matter liquid, and not easy to clog.
4. Application areas
Application areas of submerged pumps
Water treatment: used in sewage plants, pumping stations and other places of water transportation, especially need to transport clear water or less solid particles of liquid.
Chemical industry: submerged pumps are widely used in chemical plants to convey chemical solutions or other clear liquids.
Drainage and precipitation: Submerged pumps are commonly used in precipitation operations at construction sites, groundwater discharge, etc.
Application areas of submerged slag pumps
Mining & Mining: Submerged slag pumps in mines are used to convey mineral slurry, mud and other liquids containing mineral particles to prevent clogging caused by solids.
Construction: In construction sites, especially underground construction, the submerged slag pump is used for pumping slurry, slag and other sewage.
Environmental protection and sewage treatment: the submerged slag pump can be used for sewage treatment plant slag discharge, treatment of municipal sewage, industrial wastewater and so on.
Oil drilling: oil drilling process, the submerged slag pump is used to transport drilling fluid, mud and other liquids containing solid particles.
5. Maintenance and upkeep
Maintenance of submerged pump
As submerged pumps usually only handle clear water or liquids without particles, their maintenance is relatively simple. It is mainly necessary to regularly check the wear of impeller and seals to ensure the operating efficiency of the pump.
Attention needs to be paid to the heat dissipation and waterproofing of the motor to prevent failure of the electrical part.
Maintenance of submerged slag pump
The maintenance of the submerged slag pump requires more, especially to regularly check the wear and tear of the pump body, impeller, bearings and other parts. As it often handles liquids containing solid particles, it is prone to clogging or corrosion.
The interior of the pump body needs to be cleaned regularly to prevent the accumulation of impurities, which affects the normal operation of the pump.
Summary:
Submerged pump: suitable for clear water and liquids without solid particles, mainly used in water treatment, chemical industry, agricultural irrigation and other fields, the design is relatively simple, stable operation, maintenance is easier.
Submersible slag pump: designed for liquids containing solid particles, widely used in mining, construction, petroleum, environmental protection and other fields, with high abrasion resistance and anti-clogging ability, complex structure, requires regular maintenance.
According to the working environment and the characteristics of the liquid to choose the pump type, can effectively improve the efficiency of the system and the service life of the equipment.
