Tsurumi liquid ring pumps contribute to a sustainable society.
We offer a broad line of liquid ring pumps, including small to ultra-large, rough evacuation to high vacuum, and general-purpose products as well as systemized products and compressors. We accommodate the needs of all customers in the interests of securing a sustainable society.
Operating Principle of Liquid Ring Pump
Stopped state
Operating condition
1. Rotation
While the impeller rotates, seal liquid flows circularly along the inner wall of the casing under centrifugal force, to form a “liquid ring.” Because the impeller is eccentrically offset, the space generated by the rotation of the impeller is crescent-shaped, instead of a circle centered on the shaft.
2. Suction
The suction port is located in the position where the crescent shaped space expands. The liquid sucked into the suction port is pushed into the space (gas cell) enclosed by the impeller blade and the “liquid ring.”
3. Compression
As shown in the figure, the gas cell becomes smaller as the rotation continues. This means that the gas volume is being reduced, resulting in compression.
4. Discharge
Compressed air is discharged from the discharge port, which is located in the position where compressed gas pressure is increased to the specified level.
A general-purpose vacuum pump integrated with an electric motor. By eliminating the conventional coupling part, a significant reduction in size has been achieved. It can be incorporated into various devices.
A general-purpose vacuum pump that combines excellent utility and durability. The structure has been reviewed and the number of parts has been reduced to achieve mass and size reduction. It can be widely used for general industries.
An almighty vacuum pump that supports special corrosion resistant materials and mechanical seals. We have a wealth of experience as a vacuum source for production equipment used in the petrochemical industry and for pharmaceuticals.
A large-capacity, high-efficiency vacuum pump. It was developed as a vacuum source for equipment that requires a large air flow, such as for paper machine dehydration, gypsum separator dehydration, steelmaking degassing, and CO₂ separation and recovery.
Large-capacity, High-efficiency Liquid Ring Vacuum Pump Suitable for Gas removal/extraction system for Geothermal Power Generation, and can be supplied not only as Vacuum Pump but also in hybrid system that combines a steam ejector. Contributing to the Use of Renewable Energy to Achieve the SDGs.
Since it is a two-stage type with two impellers built in series in one pump, this vacuum pump can exhibit good performance even in a high vacuum range such as in distillation, concentration, and polymerization.
This vacuum pump draws air from the inside of a condenser such as in a thermal power plant and conforms to the US HEI standard, so it is possible to select a model immediately. In addition, it is also possible to select according to individual specifications such as for geothermal power, waste, and private power generation.
A vacuum pump that is indispensable for various types of vacuum suction, including priming when the main pump of a pump station is started. Due to its small size, it can be used at any site.
It is a single-actuated liquid-sealed compressor. As a feature of the liquid-sealed compressor, it can be used to compress all kinds of gas and steam, and has a proven track record of being used for production equipment in the petrochemical industry and the like.
Based on the experience and know-how cultivated over many years, Tsurumi assembles liquid ring pumps, separator tanks, heat exchangers, sealed water pumps, instruments, and other incidental equipment on a common skid to meet the various needs of our customers. We design, manufacture and provide system products. In addition, by combining a liquid ring vacuum pump with a mechanical booster or steam ejector, we will propose, from an engineering standpoint, a system product that optimally balances the initial cost and running cost.
