Vacuum pump development direction

(1) use feasible design and high-function seals to improve the uniform and no-end barrier operation period (MTBF) of the whole machine.
The working reliability of water ring vacuum pump and water ring compressor, that is, the operation period of uniform endless barrier, should be said that compared with other coarse and low vacuum equipment is still relatively high, the operation period of uniform endless barrier can reach more than 10000 hours. However, with the improvement of technology in various industries and the improvement of reliability requirements for the whole vacuum system, the reliability requirements for the vacuum system are correspondingly higher. Especially in the chemical and coal mine gas extraction conditions such as strict safety requirements, the pump to long-term continuous operation, the international level of improvement can reach tens of thousands of hours. Therefore, the design of water ring vacuum pump and water ring compressor development and manufacturing constraints and the quality of seals (especially mechanical seals), to really improve the reliability of the machine is still need to further strengthen the work of the above aspects.
(2) adopt the optimization design method to improve the efficiency of the pump and reduce energy consumption
Water ring vacuum pump and water ring compressor are products with high energy consumption and low efficiency, which is generally acknowledged. The small pump is generally 30-35%, while the large pump is 40% or slightly higher. Such low efficiency is not suitable for the national requirements on mechanical and electrical products and the current situation of energy shortage in China. So should be as soon as possible, the optimization design method was adopted to affect the efficiency of pump is the hub of the impeller geometric parameters and the original position of the suction vent, area set up mathematical model of optimization design, choose the optimal combination parameter of each scheme, and using the theory of gas-liquid two phase flow and the calculation formula for design, try to reduce the eddy current loss water ring, achieve the goal of progress efficiency. Therefore, it is an important task to design and develop water ring vacuum pump and compressor with high efficiency and energy saving as soon as possible so as to eliminate backward products with high energy consumption and low efficiency.
(3) air volume at the working point of the progressive zone air ejector.
Whether the single-stage water ring vacuum pump is still two-stage water ring vacuum pump with air ejector abroad to improve the amount of air extraction under lower suction pressure is still more. Technology from abroad to improve predecessors of the enterprise on the technical data of it can be seen that single stage water ring vacuum pump with primary air injector, the suction pressure of 5 kPa, extraction rate can be up to the pump without the atmospheric jet suction pressure 400 hpa point extraction rate of the commonly used single stage water ring vacuum pump (user common condition point) of 65-70%, two stage water ring vacuum pump with primary air injector, the suction pressure of 1.5 kPa point extraction rate can be up to the pump without air ejector suction pressure is 8 kPa point extraction rate (two stage water ring vacuum pump commonly used point) of 70-75%, In this way, the application scope of the water ring vacuum pump is greatly expanded, which satisfies the technical precondition of the large extraction rate at the suction pressure of 1.5-5kpa required in chemical industry, pharmaceutical industry, light industry, instrument, metallurgy, power generation and other industries. But at present the application of water ring vacuum pump with air ejector is not wide enough. Second, the extraction rate at the point of 1.5-5kpa is small, which has a certain gap with the technical level of foreign advanced manufacturers. For further popularization and application, should study to improve the atmosphere of injector design and the optimal formula of water ring vacuum pump, because the air in the atmosphere of injector nozzle (laval nozzle) and reducing period of activity of the diffuser is supersonic airflow, and the two strands of the airflow mixed with is pumped gases in the atmosphere in the process of momentum exchange is more complicated, can not rely solely on the theoretical calculation method for design, required test for many times, but from the expansion of the application and progress of water ring vacuum pump, experimental study on the perspective of its efficiency should strengthen efforts to advance the efficiency of extraction.
stainless steel liquid ring vacuum pump

stainless steel vacuum pump