The OH2 centrifugal pump belongs to the category of horizontal, single - stage, single - suction, overhung, and radially split volute pumps. It is mainly composed of components such as the pump body, impeller, pump shaft, bearings, and sealing devices. The pump body is supported at the centerline, which can effectively cope with thermal expansion and adapt to a temperature range from - 20°C to + 450°C, making it more adaptable than base - foot support. The impeller is mostly of a closed - type design with balance holes. Through advanced hydraulic design, it can balance the axial force and improve the cavitation performance simultaneously.
The OH2 centrifugal pump operates based on the principle of centrifugal force. Before startup, the pump casing and the suction pipe need to be filled with liquid. After the motor is started, the impeller rotates at a high speed. Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and then flows into the pressure pipeline through the volute - shaped pump casing. At the same time, a vacuum is formed at the center of the impeller, and the water in the suction pool enters the pump casing under the action of atmospheric pressure. As the impeller continues to rotate, continuous fluid conveyance is achieved.
The flow rate range of the OH2 centrifugal pump is 3 to 2600 m³/h, the head can reach 4 to 250 m, and common motor speeds are 2950 rpm and 1475 rpm, which can be adjusted according to user needs. The maximum design pressure is 5.0 Mpa, and the operating temperature range is from - 20°C to + 450°C or even wider, enabling it to convey a variety of media.
In the refining and petrochemical industry, the OH2 centrifugal pump transports crude oil, chemical raw materials, etc., ensuring the stable operation of the production process. In the coal processing industry, it transports media containing particles such as coal slurry and can achieve long - term operation with its anti - pollution and wear - resistant properties. In the chemical industry, it is used to transport various chemical raw materials and products, meeting the strict requirements of fields such as pharmaceuticals and fertilizers. In the fiber, paper - making, and sugar - making industries, it transports materials such as pulp and syrup, and its good sealing performance prevents leakage from affecting production. In the water industry, it plays an important role in urban water supply, sewage treatment, seawater desalination, and other links. In the shipbuilding and offshore engineering fields, it transports various media for ships and offshore platforms, ensuring their normal operation.
The main sealing methods of the OH2 centrifugal pump are mechanical seals and packing seals. Mechanical seals comply with the API 682 standard. They prevent medium leakage through the tight fit of the moving ring and the stationary ring. They have good sealing performance, low leakage, and a long service life, and are suitable for working conditions where dangerous media are transported. Packing seals, on the other hand, use soft packing to fill the space between the pump shaft and the pump casing and achieve sealing by applying pressure through the gland bolt. They have a simple structure and low cost, but the leakage is large, and regular maintenance and replacement are required. They are often used in occasions where the leakage requirements are not high and the media are relatively clean.
To maintain the OH2 centrifugal pump, regular inspections are required. Monitor operating parameters such as flow rate and head, check for leaks in the pump body, pipeline, and seals, and listen to the operating sound to determine if there are any abnormalities. Good lubrication management should be carried out, and the lubricant should be replenished or replaced regularly according to the bearing lubrication method. Different seals need different maintenance. For mechanical seals, observe the leakage amount. If it exceeds the standard, check the wear of the sealing surface and repair or replace it. For packing seals, regularly adjust the tightening force of the gland bolt and replace the packing when it is severely worn. According to the operating time and wear condition of the pump, regularly replace vulnerable parts such as impellers, sealing rings, and bearings. When replacing, select products that meet the specifications and install them strictly in accordance with the requirements.
TEFFIKO's OH2 overhung horizontal centrifugal pump has performed outstandingly in the industrial fluid transportation field with its unique advantages. In the future, with the development of industrial technology, it will continue to be optimized and upgraded. If you have related requirements, please feel free to contact TEFFIKO. We will provide comprehensive and one - stop professional services.
Website: www.teffiko.com
Email: sales@teffiko.com
