What do you need to know about water ring vacuum pumps

The core structure of a water ring vacuum pump consists of an eccentrically installed impeller,pump body,water ring,and distributor.Before starting,a certain height of water needs to be injected into the pump.When the impeller rotates,the water forms an equally thick water ring concentric with the pump casing under the action of centrifugal force.Multiple independent crescent shaped working chambers are formed between the impeller blades and the water ring.As the impeller rotates,the volume of the working chambers periodically changes:during the first half of the rotation,the volume expands and gas is drawn in through the suction hole;During the second half of the rotation,the volume decreases,and the gas is compressed and discharged through the exhaust hole.During this process,the water ring not only plays a sealing role,but also carries away the compression heat through circulation,ensuring that the gas compression process approaches an isothermal state.Its vacuum degree is usually 2000-4000Pa,which can be increased to 270-670Pa after connecting with an atmospheric injector,suitable for rough vacuum environments.

In the pressure swing adsorption decarbonization and hydrogen extraction process,the water ring pump regenerates the adsorbent through vacuum analysis,and the processing gas volume can reach tens of thousands of cubic meters per hour.In the field of organic solvent recovery,the Roots water ring vacuum unit can achieve a yield of over 95%with a vacuum degree of 0.5Pa.In vacuum distillation,concentration,drying and other processes,the water ring pump reduces the boiling point of the liquid,improves the efficiency of heat sensitive material processing,and ensures product quality.
The steam turbine condenser needs to continuously extract non condensable gases to maintain vacuum,and the water ring vacuum pump plays a key role in this process.Its dual pump operation mode can meet the full working condition requirements of the unit,and the time for vacuuming to 4.0kPa does not exceed 45 minutes.In addition,processes such as flue gas desulfurization and fly ash transportation also rely on water ring pumps to achieve effective gas-liquid separation and material transfer.
In the vacuum filtration,black liquor evaporation,degassing and dehydration processes of the paper industry,water ring vacuum pumps remove chemical substances from pulp and recover lime slurry from the clarification process of white water,thereby improving the concentration of raw materials and paper quality.In the field of environmental protection,scenarios such as wastewater treatment,biogas compression,and landfill gas recovery all require water ring pumps to provide a stable negative pressure environment.
Currently,water ring vacuum pumps are developing towards effective energy conservation and intelligence.For example,by optimizing the impeller hydraulic model to reduce energy consumption,using variable frequency control to achieve flow regulation,and integrating IoT modules for remote monitoring and fault warning.In addition,the application of the new working fluid further expands its applicability in high vacuum and special medium conditions.
As a leader in the industrial field,the technology maturity and application breadth of water ring vacuum pumps are still continuously improving.By gaining a deep understanding of its working principle,matching application scenarios,and strictly adhering to operating standards,users can unleash the efficiency of the equipment and provide stable and reliable vacuum protection for the production process.