Wet Granulator Cylinder Cover Locking Mechanism
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Solution Overview
Problem
The existing wet granulators have complex and inconvenient locking structures for the cylinder cover, which are prone to instability and can lead to accidental opening during material explosions, posing safety hazards and operational inefficiencies.
Innovation Solution
A wet granulator design featuring a simple locking mechanism with a rotating cylinder cover, a locking pin, and a reset spring, along with a mechanism for controlled opening to balance internal and external pressures, and a material discharge system with locking and unlocking mechanisms to manage explosion pressures safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking structure is provided for the cylinder cover, then the cylinder cover can be kept closed to prevent material leakage, but the locking structure becomes complex and inconvenient to use
Solution Approach 1:
The locking structure is divided into independent functional modules: a locking member with a locking pin on the cylinder cover, and a corresponding contacting block with a slope surface on the cylinder body. This segmentation allows each component to be simple in design while achieving reliable locking through their interaction, resolving the contradiction between reliability and complexity.
2Reliability
If a locking structure is provided for the cylinder cover, then the cylinder cover can be kept closed to prevent material leakage, but the locked cylinder cover is likely to be opened when the material in the material cylinder explodes
Solution Approach 1:
The locking pin is preliminarily positioned by the slope surface of the contacting block before explosion occurs. When explosion impact occurs, the slope surface provides a mechanical stop that prevents the locking pin from disengaging, creating preliminary anti-action against the harmful explosion force that would otherwise open the cylinder cover.
Solution Approach 2:
The reset spring is pre-installed on the locking pin to provide cushioning force. When explosion impact occurs, the spring absorbs the shock energy and maintains the locking pin in its locked position, preventing accidental opening while protecting the locking mechanism from damage.
3Productivity
If the cylinder cover is opened quickly, then operational efficiency is improved, but safety is compromised due to pressure difference causing material explosion
Solution Approach 1:
The cylinder cover opening process is divided into preliminary and main stages. First, the locking member rotates to disengage the locking pin from the slope surface (preliminary action). Then, the cover is fully opened (main action). This preliminary action allows controlled pressure equalization before rapid opening, maintaining both safety and productivity.
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
The design provides enhanced operational convenience, improved locking stability, and increased safety by preventing accidental opening during explosions and ensuring controlled pressure balance, while maintaining the material discharge system's functionality and explosion resistance.
Implementation Method 1
A reset spring is sleeved on the middle rod. One end of the reset spring is fixedly installed on the contacting step, and the other end of the reset spring is arranged in contact with the contacting platform to form a linkage between the locking pin and the reset spring. The force caused by the weight of the locking pin is less than a reset elastic force of the reset spring, so that the locking pin is fixed on the first through groove.
Data Source
AI summary
A wet granulator includes a material cylinder. A cylinder cover is rotatably arranged at an opening of the material cylinder, and a locking member is arranged on the cylinder cover. The locking member includes a locking housing, and the locking housing is provided with a first through groove. A locking pin slides in the first through groove, and the locking pin includes a middle rod and a contacting rod. A first end of the contacting rod is connected to a first end of the middle rod to form a contacting platform, and a second end of the contacting rod extends out of the first through groove. The first end of the middle rod is arranged in the first through groove, and a second end of the middle rod extends out of the first through groove. The second end of the middle rod is provided with a pin head.