Dosing Conveyers for Aggregate Weighing
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Solution Overview
Problem
Existing systems for weighing loose mixtures in construction mixture production, such as aggregate, suffer from limited output and risk of equipment failure due to motor brake issues, leading to production interruptions and inability to meet contracted orders.
Innovation Solution
The use of dosing conveyers or dosing flaps to accurately and rapidly weigh and transport aggregate fractions into a mixer, with independent weighing devices and tensometric sensors to ensure continuous operation and minimize downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a bucket is used to transport aggregate doses to the mixer, then the aggregate can be transported, but the plant output is limited by the bucket displacement path length and motor brake failures can cause crashes and production interruptions
Solution Approach 1:
The invention extracts the aggregate transport function from the bucket system and creates a separate dedicated conveyer system. The bucket retains only its original function of transporting finished concrete mixture to the discharge point, while aggregate is conveyed separately through a dedicated conveyer that eliminates the risk of bucket crashes and allows independent optimization of transport speed and reliability.
Solution Approach 2:
The invention segments the transport system into distinct functional components: aggregate conveyers for material transport, buckets for mixture discharge, and separate weighing systems. This segmentation allows each component to be optimized independently, with aggregate conveyers designed for high-speed reliable transport without the complications of bucket mechanics.
2Productivity
If the aggregate weighing rate is increased to improve production output, then more concrete can be produced, but the existing bucket system cannot handle the increased rate due to limited displacement path
Solution Approach 1:
The invention extracts the aggregate transport function from the bucket system and creates a separate dedicated conveyer system. The bucket retains only its original function of transporting finished concrete mixture to the discharge point, while aggregate is conveyed separately through a dedicated conveyer that eliminates the risk of bucket crashes and allows independent optimization of transport speed and reliability.
Solution Approach 2:
The invention segments the transport system into distinct functional components: aggregate conveyers for material transport, buckets for mixture discharge, and separate weighing systems. This segmentation allows each component to be optimized independently, with aggregate conveyers designed for high-speed reliable transport without the complications of bucket mechanics.
3Measurement precision
If a conveyer scale is used for weighing aggregate, then weighing can be performed, but the overall system output is still limited by the bucket transport capacity
Solution Approach 1:
The invention extracts the aggregate transport function from the bucket system and creates a separate dedicated conveyer system. The bucket retains only its original function of transporting finished concrete mixture to the discharge point, while aggregate is conveyed separately through a dedicated conveyer that eliminates the risk of bucket crashes and allows independent optimization of transport speed and reliability.
Solution Approach 2:
The invention segments the transport system into distinct functional components: aggregate conveyers for material transport, buckets for mixture discharge, and separate weighing systems. This segmentation allows each component to be optimized independently, with aggregate conveyers designed for high-speed reliable transport without the complications of bucket mechanics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution increases concrete mixing plant output by up to 40% and reduces equipment failure risk by allowing continuous operation and preventing bucket falls, thus ensuring timely delivery of orders.
Implementation Method 1
The pocket conveyer is placed on the first weighing device and the storage bin is placed on the second weighing device. The first weighing device or the second weighing device comprise tensometric sensors.
Data Source
Figure 1~2
AI summary
According to said method material of individual fractions is brought from individual dosing means (1) on a running pocket conveyer (2), wherein, at any given moment material of only one fraction is brought in, and material of the subsequent fraction is started to be brought on the pocket conveyer (2) only after all material of the previous fraction has been brought on the pocket conveyer (2). The material is transported by the pocket conveyer (2) to the storage bin (4), and after all material of the last fraction has been brought from the dosing means (1) on the pocket conveyer (2), the output opening of the storage bin (4) is opened and the material is emptied into the mixer (6). The bringing of all material of a given fraction on the pocket conveyer (2) is determined so that the running pocket conveyer (2) with material on the pocket conveyer (2) is being weighed, and in case that a part of the material of a given fraction is already placed in the storage bin (4), an independent weighing of the storage bin (4) is carried out simultaneously with the material in the storage bin (4), and from the determined data about weight the moment is determined when all material of a given fraction is weighed, and at that moment the input of material of this fraction from the dosing means (1) on the pocket conveyer (2) is interrupted. Said equipment comprises individual dosing means (1) for dispensing of material of individual fractions, a pocket conveyer (2), and a storage bin (4) for storing of material of the fractions, which material is designated to be emptied into the mixer (6). The pocket conveyer (2) is connected with a first weighing device (3) and the storage bin (4) is connected with a second weighing device (5).