Optimization Design And Simulation Research On Spherical Structure Of Fiber Filter In Underground Water Purification Plant

Set up water purification station in coal mine to treatment mine water in the pit,it can provide necessary clean water for mine production,relief the stress of coal mine area water using,save water resources.However,at present,underground water purification devices generally have disadvantages such as low flow rate,long treatment cycle and less clean water providing.This is mainly due to the low filtration flow,low efficiency.The structural performance of the filter is not fully realized,resulting in larger weight and constant handling of the filter.In view of the current situation,the s imulation of fiber filter is carried out by using the CFD numerical simulation technology based on ANSYS.In order to improve the efficiency of the filter,Using the Fluent module of ANSYS Workbench platform,the internal fluid model of fiber filter is established,and the porous media layer is used to simulate the comet fiber filter layer,and the numerical simulation of the filter under different inlet pressure and inlet speed is carried out.The data of the pressure distribution and velocity distribution are obtained when the filter is working,and the data of the eight points ins ide the filter are derived,and the curves are drawn.The results are obtained by the analysis : When the entry speed is constant,the maximum pressure of the fiber filter model increase with the increase of inlet pressure,and the minimum pressure decrease,but the distribution rule of pressure and velocity is constant,the change of pressure is more obvious than that of speed;When inlet pressure is constant,the inlet and outlet velocity of fiber filter increase with the increase of inlet speed,while the distribution and change rule of pressure and speed basically remain unchanged.Therefore,when using the fiber filter,it is recommended to use inlet pressure at 2MPa and inlet speed at 8.5m/s to achieve higher filtration efficiency.In order to study the distribution of the stress and strain of the filter during the work of the fiber filter,Us ing the ANSYS Workbench platform,the model of the fiber filter solid part is established,and the results of the Fluent module numerical simulation are leading-in the Static Structural module,the unidirectional flow and solid coupling analys is of the fiber filter is carried out,and the equivalent stress distribution and the total deformation distribution cloud of the filter are obtained,and the results are obtained by analyzing: When the inlet pressure is constant,the entry speed increases gradually.The maximum equivalent stress produced by the fiber filter decreases and the maximum total deformation increases gradually,at the same time,the equivalent stress on the filter is gradually reduced and the total deformation increases gradually;Under the condition of keeping the entry speed unchanged,the equivalent stress increases and the total deformation increases with the increase of inlet pressure,the change of the increas ing trend is obvious than the change caused by increase speed gradually.According to the analys is,the equivalent stress and total deformation in the filter process restrict the structure performance of the filter,which not only makes the filter bulky and heavy,but also causes the waste of the material.The underground environment has a narrow space,and the filters used should be as small as possible under the conditions of satisfying the use conditions.To solve this problem,the filter is optimized.The Screening filter optimization method in ANSYS is used to establish the parametric model of the filter and determine the optimization mathematical model,the optimum design of the spherical tank and cylinder of the filter is carried out to minimize the quality of the designed filter under the stress requirement,and on the basis of the coupling analys is of the filter flow and solid,the strut of the filter is optimized to meet the stress requirements.According to the simulation optimization results,under the condition of the other geometric parameters of the filter,the inner diameter of the spherical tank on the filter is 555.76 mm,the thickness of the cylinder wall is 11 mm.Through the research on the fiber filter,which important part of underground water purification device,including numerical simulation of filter layer,unidirectional fluid and solid coupling analysis and structural optimization,the distribution of internal pressure and velocity,the equivalent stress and the total deformation are obtained,it optimizes the filter structure to reduce the quality as far as possible.This will guide to the design of high efficiency,large flow,stable and reliable underground mine water filter theoretically.