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I. Product Overview
The Rotor Pump Comprehensive Performance Test Bench is a high-precision testing device specifically developed for positive-displacement rotor pumps, and is fully compatible with a wide range of types, including cam-type rotor pumps, screw-type rotor pumps, stainless steel rotor pumps, bitumen rotor pumps, transfer rotor pumps and sanitary-grade rotor pumps. Designed in accordance with testing standards for positive-displacement pumps, the equipment utilises a closed-loop piping system, a precision pressure and flow regulation system, dynamic torque acquisition, and a fully automated industrial control measurement and monitoring solution, all of which are tailored to the operational characteristics of rotor pumps: low rotational speed, high head, wear resistance, and constant positive-displacement flow.
The equipment provides a one-stop solution for comprehensive testing of all parameters, including the hydraulic performance, volumetric efficiency, mechanical efficiency, torque-power characteristics, pressure stability, sealing performance, temperature rise and durability, and pulsation characteristics of rotary pumps. Unlike centrifugal pump testing equipment, this system optimises data acquisition algorithms and control logic to account for the characteristics of rotary pumps—namely low speed, high torque, flow pulsation and positive displacement delivery—ensuring that test data more accurately reflects the actual operating conditions of rotary pumps. It is widely used by rotary pump manufacturers for new product R&D and calibration, full factory inspection, type certification, and reliability and endurance testing.
II. Core Test Items
1. Hydraulic Performance Testing
Precise measurement of the rotor pump’s inlet and outlet pressures, working head, real-time discharge flow rate and pressure differential stability; completion of fixed-point testing under multiple operating conditions and continuous variable-load sweep testing; automatic plotting of full-range performance curves for flow-pressure, flow-power and flow-efficiency to verify the constant-flow output capability of positive-displacement pumps.
2. Volumetric Efficiency and Mechanical Efficiency Testing
By comparing actual flow rate with theoretical displacement, this test accurately calculates the volumetric efficiency, mechanical efficiency and overall efficiency of the rotary pump; it detects internal recirculation and leakage losses through clearances, providing key data to support the optimisation of rotor clearance, casing precision and seal design.
3. Torque and Power Performance Testing
This test measures starting torque, operating torque, input power and shaft power under different pressure loads; assess the stability of torque at low speeds and torque output capacity under heavy loads, whilst identifying quality issues such as rotor seizure, excessive friction and abnormal noise under load.
4. Flow Pulsation and Stability Testing
Addressing the pulsating delivery characteristics of rotary pumps, this test monitors flow and pressure pulsation coefficients in real time across all operating conditions to verify the smoothness of the pump’s delivery, meeting the quality inspection requirements for high-precision delivery applications in the food, pharmaceutical and chemical industries.
5. Seal Pressure Resistance and Static Performance Testing
Supports static water/oil pressure endurance testing of the pump body, pressure-holding leakage detection and seal reliability verification; detects leaks at end seals, shaft seals and flange positions to determine the overall sealing process grade of the unit.
6. Temperature Rise and Durability Reliability Testing
Supports continuous endurance testing under prolonged rated and alternating loads; monitors temperature rise changes in the pump body, medium and drive components in real time to verify the rotor pump’s long-term wear resistance, thermal stability and service life.
III. Key Advantages of the Equipment
1. Customised specifically for positive-displacement rotary pumps, ensuring greater testing accuracy
Unlike general-purpose centrifugal pump test benches, this equipment optimises control programmes and sampling frequencies to account for the low-speed, positive-displacement output, flow pulsation and high-pressure, low-flow characteristics of rotary pumps. It can accurately capture minute fluctuations in flow and pressure pulsations, eliminating the issues of testing inaccuracy and data drift associated with general-purpose equipment.
2. Closed-loop pressure-stabilisation system for exceptionally stable operating conditions
Utilising a sealed circulation circuit, combined with pressure stabilisation buffering, precision filtration and flow-stabilisation structures, this system effectively suppresses fluid turbulence within the piping. This ensures high repeatability and stability of test data under both high- and low-pressure conditions for rotary lobe pumps, making it suitable for precise calibration during research and development.
3. Adaptable to a wide range of high- and low-pressure operating conditions, offering high versatility
Suitable for sanitary-grade low-flow rotary pumps, industrial high-capacity rotary pumps, high-pressure bitumen rotary pumps and pumps for viscous media. A single set of equipment covers the testing of the full range of rotary pump products, catering to manufacturers of multiple product categories.
4. Fully automated intelligent testing, highly efficient for mass production
Featuring fully automated closed-loop control via an industrial PC and PLC, the system initiates automatic pressure regulation, variable load testing, data acquisition, curve generation and report export at the touch of a button. This significantly reduces manual intervention and aligns with the high-volume production rhythm of factory quality control.
5. Modular quick-fit structure for convenient sample replacement
Equipped with an adjustable mounting base, multi-size adaptors and quick-clamping fixtures, the system supports rapid installation of rotor pumps with different mounting configurations and bore sizes. Commissioning is straightforward, alignment is precise, and mechanical wear is effectively minimised.
6. Multi-layered safety protection ensures stable and reliable operation
The equipment integrates overpressure relief, overload protection, over-temperature shutdown, low-water protection, emergency stop interlock and audible and visual alarms; high- and low-voltage circuits are separated with shielded cabling, and grounding complies with standards, enabling 24/7 continuous endurance testing in workshop environments.
IV. System Configuration
The complete system comprises a closed-loop piping system, a pressure and flow stabilisation unit, a precision pressure regulation valve assembly, high-precision flow and pressure sensing modules, a dynamic torque and speed testing unit, a temperature sensing system, an electrical control cabinet, an industrial HMI, and dedicated testing software for rotor pumps. It is supplied with quick-change fixtures, sealed connectors, filters, pressure relief protection devices and equipment guards, offering a complete structure, high integration and ease of maintenance.
V. Scope of Application
Widely applicable to manufacturers, R&D laboratories and quality control departments specialising in cam rotor pumps, stainless steel sanitary rotor pumps, screw rotor pumps, bitumen rotor pumps, viscous material transfer pumps and industrial positive displacement pumps. Primarily used for new product performance calibration, volumetric efficiency testing, pressure pulsation testing, full factory inspection, batch consistency spot checks, and durability and reliability verification.
VI. After-Sales and Warranty Services
We support customisation of non-standard pressure, flow rate and rotational speed ranges, as well as testing functions for special media; we provide on-site installation and commissioning, equipment operation training, and technical guidance on maintenance and servicing. A complete set of technical documentation is provided in both hard copy and electronic formats (operating manual, maintenance manual, electrical schematic diagrams, piping assembly drawings and spare parts list). The entire unit is covered by a 1-year warranty, with lifetime technical support and lifetime maintenance services; we respond rapidly to faults to ensure stable production line operation.
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