Mechanical Structural Design Of Hydraulic Diaphragm Pump

The slurry pipeline with the liquid as a carrier, is used to convey the material particleswhich contain two phases of flow. Compared with other ways of transportation, it has beenvalued by countries all over the world with a broad application prospect, because of itslower energy consumption, less restriction by terrain, continuous transportation and etc..The system of slurry pipeline contains slurry preparation, slurry conveying system anddehydration system, among which the slurry conveying system is the core of the pipelinesystem, and the slurry pump is the “heart” of the slurry conveying system. At present, withthe slurry pipeline technology developing to the direction of high lift, high consistence andlong distance, new requirements for pump have been raised. So the article puts forward anew type of high-pressure slurry pump, called the hydraulic diaphragm pump. With itssimple structure, stable conveying flow, long service life and low cost, it is a new kind ofeconomic and environment-friendly product, and it has a bright prospect. This pumpcontains drive hydraulic system, membrane position control of hydraulic system,diaphragm chamber and so on. The thesis mainly expand and design the drive hydraulicsystem, membrane position control of hydraulic system, compound cylinder, membrane andetc.. The article is mainly divided into five parts as follows:（1）The first part has elaborated the composition of the hydraulic diaphragm pumpstructure and confirmed the overall design of the hydraulic diaphragm pump. As a result,the hydraulic diaphragm pump is compactly structured, meanwhile, it also covers a smallland and runs with reliability and etc..（2）In the second part, The drive hydraulic system of hydraulic diaphragm pump isdesigned. Combined with the design parameters and analyzed the commands of working,some aspects which include drive hydraulic system principle, cylinder mechanicalstructure, manifold block, fuel tank and etc., are designed to make drive hydraulic systemwork smoothly and orderly.（3）The membrane position control of hydraulic system is designed. Considering the working property, some aspects, which include membrane position control of hydraulicsystem, hydraulic components, manifold block, fuel tank and etc., are designed to ensurethe right working position of the diaphragm. And it also can improve the service behaviorand prolong the service life of diaphragm.（4）It has designed the diaphragm and confirmed the size. Combined with designparameters, the diaphragm is designed and analyzed by ANSYS dynamic analysis with thetheory of thin film. In the process of analysis, the range of displacement of diaphragmmovement are achieved. According to the requirements of volume, it is necessary to designthe small size of diaphragm.（5）The diaphragm is optimal designed. Aimed at the uneven and centralizeddistribution of the stress, the model with parameters is set up to optimize, which aim toimprove the diaphragm stress and prolong the service of the diaphragm under the optimalsize.