Impact Mill Transmission Machinery for Compact Rotor Drive
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Solution Overview
Problem
Existing impact mill designs require significant space for separate electrical motors to rotate coaxial rotors in different directions, making them cumbersome and difficult to integrate into compact systems, especially when material needs to be fed through the rotor center.
Innovation Solution
A transmission machinery system using a secondary shaft with a gear pair or conical gear to rotate both coaxial rotors with a single driving apparatus, allowing for different directions or speeds of rotation, reducing the need for separate motors and minimizing space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two separate electrical motors are used to rotate the coaxial rotors in different directions, then each rotor can be driven independently, but the space requirement increases significantly and the device becomes more complex
Solution Approach 1:
The patent combines two separate driving functions into a single electrical motor by using a transmission mechanism with a first gear pair and a second gear pair. The single motor drives a common intermediate shaft that distributes rotational motion to both rotors through the gear pairs, enabling independent rotation control while reducing space requirements and eliminating the need for two separate motors
Solution Approach 2:
The patent introduces a common intermediate shaft as an intermediary component between the single electrical motor and the two rotors. This intermediate shaft serves as a mediator that receives rotational motion from the motor and distributes it to both rotors through the gear pairs, enabling independent rotation control without requiring separate motors for each rotor
2Adaptability or versatility
If two separate electrical motors with vee belt driving are used, then each rotor shaft can be rotated in different directions, but the transmission arrangement requires relatively much space and becomes difficult to arrange
Solution Approach 1:
The patent merges two separate vee belt transmission systems into a single gear-based transmission system. By using a first gear pair connected to the intermediate shaft and a second gear pair also connected to the intermediate shaft, the system achieves different rotation directions for both rotors while significantly reducing transmission complexity and space requirements compared to two separate vee belt systems
3Ease of operation
If material is fed through the shaft of the upper rotor, then feeding from below is possible, but the transmission arrangement from the motor to the rotor center becomes difficult to arrange
Solution Approach 1:
The common intermediate shaft acts as an intermediary that provides a centralized location for the transmission mechanism. By positioning the first and second gear pairs on this intermediate shaft, the patent enables material feeding through the rotor shaft center while keeping the transmission arrangement simple and accessible, avoiding the complexity of arranging transmissions directly at the rotor centers
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 enables a more compact, service-friendly, and cost-effective impact mill design that can efficiently rotate coaxial rotors in different directions or at different speeds using a single driving apparatus, improving space efficiency and reducing complexity.
Implementation Method 1
The transmission machinery comprises a secondary shaft equipped with a gear pair, which is driven by the driving apparatus directly or by means of a transmission apparatus. The first gear of the gear pair at the secondary shaft is arranged to rotate, directly or by means of a transmission wheel, a gear to be driven, where said gear is at the shaft of the first rotor of a rotor apparatus, by a first speed in a first direction of rotation. The second gear of the gear pair at the secondary shaft is arranged to rotate, directly or by means of a transmission wheel, a gear to be driven, where said gear is located at the shaft of the second rotor of the rotor apparatus, in the opposite direction of rotation or by a second speed in the same direction of rotation.
Implementation Method 2
According to another embodiment, the secondary shaft of the transmission machinery may have one conical gear instead of two separate gears. By this conical gear two conical gears can be rotated simultaneously, the firs one in a first direction of rotation and the second on in a second direction of rotation.
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
An impact mill equipped with transmission machinery (10) to rotate two coaxial rotors (16, 18) of a rotor apparatus (12) by means of one single driving apparatus (14). The transmission device comprises according to one alternative a secondary shaft (32; 36b) equipped with a gear pair (28, 30) or a conic gear (29). The first gear (28) rotates a gear (24) at the shaft (20) of the first rotor (16), and the second gear (30) rotates a gear (26) at the shaft (22) of the second rotor (18), but in the opposite direction or at a different speed. The conic gear (29) rotates the gear (24a) at the shaft (20) of the first rotor (16) in one direction, and the gear (26a) at the shaft (22) of the second rotor (18) in the opposite direction.