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Hydraulic trash pump and hydraulic submersible pump difference

November 17,2023

Hydraulic trash pumps   and  hydraulic submersible pumps  are common equipment in engineering. They are two pumps with different uses and characteristics. So what is the difference between them?

First of all, both pumps are hydraulically driven equipment and both have the ability to work submersibly. To a certain extent, the trash pump is a type of submersible pump, but there are still differences between the two:


Differences in processing media

The hydraulic submersible pump is mainly used to pump clean water. Its working conditions are relatively simple, and it is easier to select the material requirements of the product than the sewage pump. Hydraulic trash pumps are mainly used to transport sewage. This water quality is usually poor and may contain highly corrosive chemicals and even solid particles such as feces, fibers, and paper scraps. The transported medium contains substances that are easily entangled or aggregated. Bundles of fibers.


Differences in design and material selection

The design of hydraulic submersible pumps usually needs to meet the requirements of working normally underwater for a long time. Therefore, materials with strong corrosion resistance such as stainless steel, copper, cast iron, etc. are often used to manufacture them. The design of hydraulic trash pumps mainly takes into account the poor quality of the water they handle. Therefore, the materials used for hydraulic sewage pumps are often wear-resistant and corrosion-resistant materials, such as high-chromium alloys, stainless steel, etc.


Different structures

There are differences between sewage pumps and submersible pumps due to the different media they process. Trash pumps require technology to handle solid particles such as long fibers and paper scraps. Therefore, blockage resistance and reliability are important factors in evaluating its performance. The drive of the trash pump is usually turned on or off by a motor. It takes a certain amount of time to complete this action, which can be adjusted. In order to cope with the transportation of high concentration and high-density solid particles, the impeller design of hydraulic trash pumps is usually an open or wide flow channel design to prevent clogging; compared with sewage pumps, the structure of submersible pumps is much simpler. The submersible pump is driven by a coil and can only be turned on or off, with a short switching time. The submersible pump has a closed impeller.


Differences in use

The submersible pump is easy to use and can be put directly into the water. There is no need to fill the pump with water. It can be connected with a hose and is often used for temporary water collection. The suction pipe of the trash pump must be connected with a hard pipe and a low valve needs to be installed, which is required during the first installation and use. Fill the water pump with water and often use it for fixed purposes.


Different application fields

Hydraulic submersible pumps are widely used in deep well water intake for domestic water use, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship load adjustment, and can also be used for fountain landscapes; while hydraulic sewage pumps are mainly used for sewage discharge, sponge cities, Industrial wastewater treatment, pumping station drainage, urban flood discharge and other fields.

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