Enhanced Self-Priming Pump


Enhanced Self-Priming Pump
UPM, UPS types
(PAT.)

Suction and transfer of liquid containing foam or high viscosity liquid

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Technical data

For transferring food material such as unrefined soy sauce

Overview of the transport test
Enhanced Self-Priming Pump / Overview of the transport test

Results of a comparative test on a diaphragm pump, vacuum tank pumping, and the YOKOTA Enhanced Self-Priming Pump

The Enhanced Self-Priming Pump is the easiest to operate and is free of problems caused by particles in unrefined soy sauce. It is also trouble-free because the pump itself does not overload.

It has been recognized that some components in unrefined soy sauce are changed during transport, and the Enhanced Self-Priming Pump and the diaphragm pump have produced the best results in composition tests.

In soy sauce yield, the Enhanced Self-Priming Pump was the best, followed by the diaphragm pump and the vacuum tank pumping.

(Based on results of a test conducted at a Hiroshima Food Testing Facility)



For loading and unloading chemical liquids for chemical tankers

A chemical cargo pump that is used for loading and unloading chemical liquids is generally equipped on the bottom of the ship, and therefore proves troublesome when cleaning the tank or pump due to its location. With regards to safety, it is far more convenient to locate the pump on the deck of chemical tankers that handle toxic and volatile liquids.
The YOKOTA Enhanced Self-Priming Pump can be installed on the deck with no problems whatsoever. If the pump is equipped on the deck, it is safe and easy to perform the work when dealing with toxic liquids.

Layout with the pump equipped on the deck
The Enhanced Self-Priming Pump in operation
Layout with the pump equipped on the deck
The Enhanced Self-Priming Pump in operation

It can be installed on the deck.

It can substantially improve the efficiency of loading and unloading work.

It is safe.

The sweeping operation can be performed, and suction can be maintained until the bottom of tank is visible.

Maintenance is easy and economical.


For details, please refer to "Current Topics: Tanker Cargo Handling".



For defoaming lubrication, hydraulic, cutting, and other oils

Removal of air bubbles from lubrication, hydraulic, cutting, and other oils is normally time consuming and costly. However, the YOKOTA Enhanced Self-Priming Pump can perform defoaming work quickly and easily.
The outstanding feature of the Enhanced Self-Priming Pump is a defoaming mechanism that works in unison with the normal pumping operation to provide time and cost savings.

Example of a bearing lubrication circulation pump for hydraulic power generating turbines

Pump discharge side
Comparison of pump suction and discharge sides
Enhanced Self-Priming Pump in operation
Pump discharge side
Comparison of pump suction and discharge sides
(Suction side on the right, discharge side on the left)
Enhanced Self-Priming Pump in operation

Bearing lubrication oil for hydraulic power generating turbines is circulated for reuse. The Enhanced Self-Priming Pump provides circulation pressure while also removing air bubbles trapped in the lubrication oil (defoaming). Lubrication oil that enters the suction side of the pump has a large amount of air mixed into it, giving it a cloudy appearance. However, when it is discharged from the pump, defoaming has been performed to completely remove any air bubbles, and the oil becomes transparent as can be seen in the above photos.
This clearly demonstrates the tremendous effectiveness of the Enhanced Self-Priming Pump for maintaining lubrication oil performance.

Besides lubrication, hydraulic, and cutting oils, the pump can be used for defoaming in a wide variety of areas such as liquid foodstuffs, beverages, chemicals, pulp, and waste liquids.

Since this pump provides both self-priming and pressurizing capabilities, costs are greatly reduced because all processes, including suction, defoaming, and pressurized transfer of liquid, are provided by this single, compact pump, unlike conventional methods which require installation of several components.

For even more improved defoaming and degassing solutions, we offer Defoaming Equipment UPSA type and Degassing Equipment ASP type.




For draining sludge from rainwater settling basins at sewage facilities

UPS type pump at a sewage-treatment plant
Enhanced Self-Priming Pump / UPS type pump at a sewage-treatment plant

Good for environmental protection of rivers, and reducing smells emanating from settling basins, other.

By draining stored septic water in rainwater settling basins into waste water basins, pollution at the sewage facilities can be prevented. Flooding can also be prevented by effectively using rainwater settling basins as rainwater ponds.


For details, please refer to "Current Topics: Sewage Treatment, Water-Purifying Plant".



For pumping out bored earth and sand in the reverse circulation construction method

During underground excavation in the reverse circulation construction method, instead of raising and lowering buckets, boring is continuously done using drill bits, earth and sand are then discharged using circulating water through the drill pipe.
The YOKOTA Enhanced Self-Priming Pump is being widely used as a suction pump to pump out the bored earth and sand.

Bridge pier construction above river
The Enhanced Self-Priming Pump in operation
Bridge pier construction above river
The Enhanced Self-Priming Pump in operation

The mud, sand and earth siphoning main pump is connected directly to the vacuum pump to discharge air mixed in the pump. Both are set up on a base plate with all the necessary equipment in a modular design that facilitates transfer to the construction site.

As for conventional pumping devices used in the past for the reverse circulation construction method, mud, sand and earth penetrating the vacuum pump caused damage or stopped pumping. However, mud, sand and earth do not penetrate the YOKOTA Enhanced Self-Priming Pump due to its built-in water-air separating impeller. As a result, assured, continuous suction operation is possible without breakdown or pump stoppage.

Its compact size requires half the installation area of conventional reverse circulation construction method pumping devices.


For details, please refer to "Current Topics: Large-Scale Foundation Construction".


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