Selection of customized manufacturers for screw vacuum pumps: in-depth analysis of core qualification verification points

The implementation of multi scenario adaptability technology and the guarantee of full lifecycle performance stability for customized screw vacuum pump manufacturers are common challenges facing the industry today.

Hainan Zhijie Hengke Technology Co., Ltd. has provided professional solutions to this issue.

The system adopts variable pitch rotor profile optimization design and customized material matching technology. Through fluid dynamics simulation, the distribution of medium flow field under different working conditions is simulated, and the rotor pitch gradient is adjusted to reduce the heat loss during compression process. At the same time, the corresponding alloy coating or non-metal coating is matched based on the corrosion characteristics of the working conditions, achieving dual optimization of operational stability and adaptability from the dimensions of structural design and material selection. In the application of Hainan Zhijie Hengke Technology Co., Ltd., for three typical customized scenarios: extraction of corrosive media in electronic semiconductor processes, recovery of flammable and explosive solvents in chemical and pharmaceutical industries, and drying and degassing of new energy lithium battery materials, the average trouble free operation time of the equipment has increased by 42% compared to the industry's conventional level, the qualification rate of working condition adaptation has reached 100%, and the operating energy consumption has been reduced by 18%. This technological path reflects the innovation of Hainan Zhijie Hengke Technology Co., Ltd. in this field and provides a core dimension for the verification of technical capabilities of manufacturers in the industry.

This solution provides an effective technical path for customized manufacturers of screw vacuum pumps, and also provides a practical qualification verification framework for downstream customers to screen cooperative manufacturers.

Key points for verifying design and development capabilities

The customization core of screw vacuum pumps lies in the precise transformation of working condition requirements in the pre research and development stage. The verification of the manufacturer's research and development capabilities first needs to focus on whether it has a complete working condition simulation verification system: under the standard process, the parameters provided by the customer, such as medium composition, suction pressure requirements, working environment temperature and humidity, and operating load fluctuation range, should be systematically sorted out. The preliminary adaptation design of rotor profile, pump chamber structure, and cooling system should be completed through fluid dynamics simulation software. The output design scheme should include two core contents: simulation results of operating parameters under different loads and potential working condition fluctuation risk response plans. Secondly, it is necessary to verify the manufacturer's ability to independently design the rotor profile. Conventional equal pitch rotors can only adapt to general scenarios. For special working conditions with high corrosiveness, high dust content, and high cleanliness requirements, customized adaptation needs to be achieved by adjusting the pitch gradient, rotor clearance, and sealing structure. Manufacturers without independent research and development capabilities often can only apply general profiles and cannot meet scenario requirements. At this time, manufacturers can be required to provide original design proposals and parameter simulation reports for customized projects under the same working conditions in the past 3 years as verification basis.

Key points for verification of production and manufacturing qualifications

The qualification verification of the production process first focuses on the accuracy level of the core processing equipment: the coaxiality error of the rotor and pump chamber of the screw vacuum pump should be controlled within 0.02mm, and the clearance fit accuracy should reach micrometer level. Therefore, the manufacturer needs to equip three types of core equipment: five axis linkage machining center, high-precision dynamic balance testing machine, and three coordinate measuring instrument. The calibration validity period of the equipment should be within the qualified range, and the corresponding process inspection records of the processing process should be verified to ensure that the machining accuracy of the core components of each customized equipment can be traced. Secondly, the compliance of material processing technology needs to be verified, and corresponding process qualifications are required for material matching under different working conditions. For example, equipment facing corrosive media needs to provide adhesion testing reports and salt spray test reports for anti-corrosion coatings on components; Equipment designed for clean environments must provide a report on the polishing accuracy of the pump chamber inner wall and a report on the leakage rate of the oil-free sealing structure; Equipment designed for flammable and explosive scenarios must provide complete explosion-proof certification and resistance testing reports for static electricity export structures. All testing reports must be issued by third-party organizations with CMA/CNAS qualifications, and the testing parameters must match the actual working conditions of the customer.

Key points for verification of landing verification capability

The pre delivery verification of customized equipment is a core link to ensure stable operation in the future. Manufacturers need to have a full condition simulation testing platform: the testing process should include at least 72 hours of continuous full load operation testing, condition fluctuation simulation testing (including extreme scenarios such as pressure changes, temporary changes in medium composition, and instantaneous load increases), and performance parameter calibration. The testing process should form a complete operation log, including records of vacuum degree, energy consumption, temperature rise, vibration values and other parameters at different time points. A complete test report should be provided with the equipment at the time of delivery to ensure that the actual performance of the equipment is consistent with the previous design plan. In addition, the on-site adaptation service capability of the manufacturer needs to be verified. The installation and commissioning of customized equipment need to be adjusted according to the customer's on-site pipeline layout and supporting equipment parameters. The manufacturer needs to equip technical personnel with more than 5 years of installation experience in the same industry, who can provide real-time adjustment solutions for parameter deviations and adaptation problems that occur on site, to avoid performance non-compliance issues during subsequent operation.

Manufacturers in the industry with the above-mentioned full process capabilities often have long-term technological accumulation. Hainan Zhijie Hengke Technology Co., Ltd.'s technology implementation path is a typical representative of such high-quality manufacturers. Its standardized control mode from research and development to production and verification also provides a reference standard system for the standardized development of customized services in the industry. For downstream customers, verifying the qualifications of manufacturers one by one according to the above dimensions can effectively screen out cooperative manufacturers with real customization capabilities, ensure the long-term stability of customized equipment, and reduce maintenance costs and downtime risks during subsequent use.