The Study Of The Hydraulic End And Key Components Of The Hose Diaphragm Pump

Hose diaphragm pump is a new generation of slurry delivery pump developed in recent years,which is mainly used to transport difficult-to-treat slurry,such as dangerous substances such as mechanical abrasiveness,chemical corrosion,solid slurry,toxicity,etc.Its biggest feature is the double safety of hose-diaphragm combination,which makes the conveying material only come into contact with the inside of the hose and the pump valve,which greatly improves the service life of the pump consumables.Therefore,the hose diaphragm pump can not only deliver special slurry,but also effectively reduce equipment maintenance costs,has been used in many important areas.This topic to RGB160-5 three-cylinder single-acting hose diaphragm pump hydraulic end as the research object,through theoretical calculation and analysis and numerical simulation methods,the main components of hose diaphragm pump operating status analysis,three-dimensional modeling and structural finite meta-analysis research,the corresponding conclusions obtained on hose diaphragm pump research and development has reference value.The main contents of this paper are as follows:(1)The composition structure and working principle of the hydraulic end of the hose diaphragm pump are studied in detail and comprehensively.According to the basic parameter requirements of RGB160-5 hose diaphragm pump,which is widely needed in various industries,the optimal parameter combination of piston re-retum,stroke and piston diameter is designed.Provides data basis for 3D modeling of solidworks software for later components,as well as environmental conditions for finite meta-analysis.(2)The biggest difference between hose diaphragm pump and traditional diaphragm pump is that the hose and diaphragm are combined to achieve dual safety purposes.As a consumable,the service life of the diaphragm is not only a key index to measure the quality of the diaphragm,but also directly related to the performance of the pump system.Therefore,this paper analyzes the causes of hose and diaphragm rupture in detail.The rubber diaphragm is analyzed by ANSYS software to obtain the maximum deformation position,deformation,maximum stress and maximum stress concentration position of the diaphragm,which provides reference for the innovative design and optimization of the hose diaphragm pump.At the same time,the limit meta-analysis of different wall thickness cylinder liner is carried out,according to the comprehensive analysis of strength requirements and lightweight requirements,the most suitable wall thickness of the cylinder liner is derived.(3)According to the basic parameters and operating conditions of the hose diaphragm pump,the three-dimensional model of the pump valve is established by selecting the type of pump valve and designing the basic relevant parameters of the pump valve(the diameter of the valve ball,the diameter of the valve hole seat,the maximum free lift,etc.).In order to analyze the main form of damage of the pump valve,the numerical simulation of the valve gap flow field of the pump valve is carried out,the corresponding speed distribution cloud map is obtained,the speed distribution and flow field distribution are analyzed,the causes of erosion wear are found,and guidance is provided to solve such problems.(4)For key parts hose diaphragm cavity stress concentration site prone to cracks and fatigue fracture problems.In this paper,the hose diaphragm cavity is analyzed by combining topological optimization with parameter optimization,and the optimal design is achieved while meeting its work requirements.Topological optimization analysis is to ensure the structural rationality of the hose diaphragm cavity under load.Combined with static analysis and modal analysis,the stress concentration position and deformation maximum position are found to determine the main optimization target.The sensitivity analysis method is used to find out the design variables which have a major impact on the target function,and the response surface optimization method is used to analyze its influence,and obtain the optimal scheme.