Research On Key Technology And Equipment Of Demolition Unit For Lead-acid Storage Cell

With the increasing consumption of lead resources,the development and utilization of such resources and reducing the extraction of primary lead have become one of the effective ways to resolve the contradiction between resources and the environment.Given the fact that waste lead-acid batteries account for 80%in the total waste lead resources,the harmless mechanical demolition of waste lead-acid batteries is of great significance to the recycling of waste lead resources in scrapped lead-acid batteries.This thesis applies the following ways to facilitate the study:first,comparing and analyzing characteristics of demolition recycling technologies adopted for different lead-acid battery such as manual demolition,heavy medium separation technology,MA crushing and sorting system,CX crushing and sorting system(crushing-hydraulic sorting technology);second,proposing a new demolition method and demolition technique;In this light,the demolition method proposed in this study can effectively reduce the mutual content rate of the demolition products,which is conducive to obtaining smelted lead with higher purity.Based on the above research ideas as well as such basic theories as functional analysis,mechanical design,mechanical principles,engineering mechanics,this study combines theoretical and experimental research methods to study the dismantling device and process of the used lead-acid battery.Major studies completed are as follows:First,studying the internal structure of the lead-acid battery;defining the overall functional requirements of the lead-acid battery demolition device;drawing up the demolition process;completing action cycle diagram;listing the morphology matrix,selecting the optimal solution;drawing a schematic diagram of the device's movement with the help of selected transmission mode and drive mode to complete the first step of the device design.Second,on the basis of functional analysis and motion schemes,coupled with mechanical design,mechanical principles and engineering mechanics,designing calculation of the main components as well as calculation for defining key components and driving parts;making sure the transmission relationship between the driving parts and the components.Procedures mainly include:selecting of the type of saw blade and calculating of the motor;making sure the size and direction of the cutting force;selecting V-belt to drive the saw blade to rotate;selecting the ball screw of EHK company;determining the lead and diameter of the screw;defining the force required to clamp the battery under sawing force after analyzing,so as to obtain the overall scheme of the device.At last,according to the finite element analysis of the rotary shaft in the clamping device of the key component and the Z-shaped beam in the sawing mechanism,such conclusion can be drawn that the component meets the requirements for the use of materials and the stability of the device.Designing motion schemes,structural design calculations and finite element analysis of important components,this thesis proposes a new demolition process,designs the demolition device with such advantages as high demolition efficiency,low cost,and reduced manpower input for demolition,which enable the design to meet the requirements of enterprises for waste lead-acid battery recycling.