Instead of oil, water is used for vacuum sealing, lubrication of rotating parts, and cooling of sliding parts.
The water-sealed pump consists of a circular casing and an impeller, with the impeller mounted in an eccentric position relative to the casing. When an appropriate amount of sealing water is added to the casing and the impeller is rotated, as shown in the diagram, the mass of the sealing water forms a concentric ring along the inner wall of the casing due to centrifugal force. By utilizing the change in volume of the space enclosed by the inner wall of this sealing water ring and the blades of the impeller as the impeller rotates, the actions of suction, compression, and exhaust are continuously performed through the suction and exhaust ports provided on the side wall or the inner wall of the impeller. Furthermore, efficient exhaust is achieved through high-speed rotation. Additionally, the sealing water serves as a seal to ensure that the gas being drawn in is always exhausted.
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basic information
■□■Features■□■ ■Ideal for exhaust of gases containing water vapor and droplets. ■Due to the two-stage pump design, it performs excellently at low pressures below 2.3×10^3Pa (excluding model SB-10). ■Designed for low noise and minimal vibration. ■The continuous suction and exhaust action due to rotation reduces pulsation. ■There are no friction parts inside the pump, which decreases the likelihood of component failure. ■It is significantly more efficient and has superior achievable pressure compared to conventional Nash types. ■□■For more details, please request materials or download the catalog■□■
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Applications/Examples of results
●Main Uses● [Electronics Industry] Wafer adhesion and transport, vacuum tweezers [Chemical Industry] Solvent recovery, distillation of alcohols, fats, fragrances, and resin materials [Pharmaceutical Industry] Disinfection and sterilization of medical instruments, freeze-drying of blood, microorganisms, and pharmaceuticals [Food Industry] Vacuum packaging, vacuum transport of powders [Textile and Paper Industry] Steam setting of threads, dewatering of pulp materials
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Company information
Currently, vacuum technology is showing significant expansion across various industrial fields, including space development, electronics, energy, physics and chemistry, electrical engineering, pharmaceuticals, food, optics, automotive, metals, and steel. These technologies have made substantial contributions at all stages, from research and development to production processes, in every sector of the industry. Furthermore, their results permeate every corner of our lives. At PHIL Sato Vacuum, we have continued to innovate as a vacuum equipment manufacturer for 75 years, developing component technologies that produce vacuum pumps, vacuum measuring instruments, and various vacuum parts, as well as a range of vacuum systems utilizing this vacuum technology, including vacuum drying, vacuum baking, vacuum heat treatment, vacuum deposition, vacuum film formation, ultra-high vacuum exhaust, vacuum injection, and vacuum impregnation. As a comprehensive vacuum manufacturer, we have always advanced research and development from the user's perspective. The corporate activities of PHIL Sato Vacuum, rooted in our "customer-first" principle, are based on our management philosophy that pursues the infinite possibilities of vacuum technology and believes that it is our mission to provide products that match user needs.
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