Rotatable Inner Pipe Supply Chute for Stone Milling
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Solution Overview
Problem
Existing supply chutes for stone material in milling machinery require frequent and labor-intensive maintenance, leading to high costs and leaks due to worn steel plates and complex rotation mechanisms.
Innovation Solution
A supply chute design featuring a rotatable, hard-wearing inner pipe within an outer pipe, supported by bearings and side rollers, allowing for easy rotation and replacement of the inner pipe's wearing surface, reducing maintenance needs and eliminating leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel plates are used to line the supply pipe to prevent wear, then the wearing resistance is improved, but the maintenance complexity and labor costs increase due to frequent replacement requirements
Solution Approach 1:
The supply pipe is divided into two independent parts: an outer pipe and an inner pipe. The inner pipe can be removed independently from the outer pipe, allowing maintenance workers to access and replace the wearing surface without disassembling the entire pipe structure. This segmentation dramatically simplifies maintenance procedures while maintaining high wearing resistance through the replaceable inner pipe.
2Strength
If steel plates are fastened with bolts to create a wearing course, then the wearing resistance is improved, but leaks occur at the fastening bolts requiring continuous cleaning
Solution Approach 1:
The inner pipe is designed as a separate, removable component that can be extracted from the outer pipe for maintenance. This extraction capability allows the wearing surface to be replaced without leaving bolt fastenings in place, thereby eliminating the leak problem that occurs when bolts are used to secure wearing plates in traditional designs.
3Loss of time
If the inner pipe is made rotatable to renew the wearing surface, then the maintenance time is reduced, but the device complexity increases due to rotation mechanisms
Solution Approach 1:
The inner pipe is designed with rotational capability to allow the wearing surface to be renewed by simply rotating the pipe to a different orientation. This dynamic feature enables maintenance workers to quickly reposition the pipe without complex rotation mechanisms, significantly reducing maintenance time while adding only minimal structural complexity for the rotation function.
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
Significantly lowers labor and material costs by simplifying maintenance, extending the inner pipe's life, and maintaining a clean environment by preventing leaks.
Implementation Method 1
The rotatableness is implemented by mounting the support rollers with bearings under the inner pipe
Implementation Method 2
The side rollers lightens for its part the rotating of the inner pipe
Data Source
Figure 1~2b
Figure 3~4
Figure 5~7b
AI summary
A chute, which supplies stone material into a milling machinery. The supply chute (300) consists of an outer pipe (310) and a rotatable hard wearing inner pipe (320). The rotatableness is implemented by mounting the support rollers (341, 343) with bearings under the inner pipe. During the use the inner pipe is fastened to the outer pipe by the joints to be easily loosened. When loosened, the inner pipe (320) can be rotated on the support rollers. At this stage a flange (325) around the inner pipe presses in the direction of its axis against the side rollers (345) to lighten the rotating. When the lower surface inside the inner pipe has worn, a rotation with suitable angle is carried out, in which case new wearing course is obtained. The maintenance costs of the supply chute (300) are for labour's part low, because the rotation of the inner pipe (320) is a simple and quick work. Also the material costs are relatively low, because the inner pipe itself acts as wearing material and the pipe can be utilized wholly.