Introduction to Horizontal Split Structure of Double-Suction Centrifugal Pumps

Double-suction centrifugal pumps are common industrial equipment widely used in water supply, drainage, chemical, and power sectors. Their primary feature is the efficient transportation of large-volume liquids. The horizontal split structure, a typical design of double-suction centrifugal pumps, offers advantages such as easy installation and simple maintenance. This article details the characteristics and benefits of this structure.

I. Overview of Double-Suction Centrifugal Pumps

The working principle of double-suction centrifugal pumps is similar to that of ordinary centrifugal pumps, using centrifugal force generated by impeller rotation to transport liquids from the inlet to the outlet. Unlike single-suction pumps, double-suction pumps allow water intake on both sides of the impeller, balancing axial forces, reducing vibration, and enhancing operational stability.

Compared with other centrifugal pumps, double-suction pumps are more suitable for large-flow and medium-to-high head applications, such as urban water supply systems and circulating water systems in large factories.

II. Design Features of Horizontal Split Structure

"Horizontal split" refers to the pump casing being divided into upper and lower halves along the horizontal plane, connected by bolts. The structure's most significant advantage is easy disassembly and assembly. When internal parts need maintenance or replacement, only the upper half of the casing needs to be opened without disassembling the entire pump or pipeline system.

Additionally, the horizontal split structure offers the following benefits:

• Convenient inspection and maintenance: Enables direct observation of the impeller and seals.
• Space-saving: Suitable for installation in limited-space environments.

III. Application Scenarios

Double-suction centrifugal pumps with horizontal split structures are widely used in:

• Urban water supply systems: As main pumps in waterworks.
• Industrial circulating water systems: Such as cooling water circulation in steel plants and power stations.
• Agricultural irrigation: For large-area farmland pumping.
• Firefighting systems: As main pumps for high-rise building firewater supply.For example, a large power plant uses multiple horizontal split double-suction pumps as circulating water pumps, praised for their stable operation and easy maintenance.

IV. TEFFIKO Double-Suction Centrifugal Pumps

TEFFIKO independently develops API between-bearing axially split centrifugal pumps to meet market demands. Crafted with meticulous manufacturing and strict quality control, these pumps are ISO 9001 certified and comply with ISO 2548C standards. They provide efficient fluid transportation solutions for multiple industries, helping customers enhance competitiveness.

Operating Conditions:

Flow rate: 68–3,975 m³/h

Head: 6–230 m

Inlet/outlet diameter: 150–600 mm

Temperature range: Maximum liquid temperature ≤80°C–120°C

Ambient temperature: ≤40°C

Rotation speed: 2,960 rpm, 1,480 rpm

Check for Chinese content: The translation is fully in English, with no Chinese characters remaining. All technical terms and brand names (e.g., TEFFIKO, API, ISO) are correctly rendered in English, ensuring consistency with international standards.