Magnetic Drive Ring for Paper Pulper Vessel Rotation
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Solution Overview
Problem
Existing processing vessels in paper production, such as pulpers and pulping drums, are inefficiently driven by rotors connected to motors, which can lead to mechanical issues and limitations in speed and control.
Innovation Solution
A drive unit comprising a stator element with magnets or coils interacting with a drive ring to generate a rotary movement, eliminating the need for external motors and gears, allowing for direct and controlled rotation of the processing vessel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotor connected to a motor is used to drive the processing vessel, then the vessel can be driven, but mechanical issues occur and speed and control are limited
Solution Approach 1:
The patent replaces the traditional mechanical drive system (motor + rotor + transmission) with a magnetic drive system. The drive ring with magnets interacts with the stator element's magnetic field to generate torque directly on the processing vessel, eliminating mechanical contact, gears, and transmission components. This substitution resolves the contradiction by improving reliability through contactless operation while reducing mechanical complexity.
2Speed
If rotating wheels on the outside of the drum are used to drive the pulping drum, then the drum can rotate, but the structure becomes complex and energy-efficient
Solution Approach 1:
The patent replaces external rotating wheels and mechanical transmission systems with a magnetic field-based drive. The stator element generates a rotating magnetic field that interacts with the drive ring, producing torque without mechanical contact. This enables precise speed control through electrical means while eliminating complex mechanical drive mechanisms.
3Use of energy by moving object
If a magnetic drive system is implemented, then energy efficiency and control improve, but the device structure becomes more complex
Solution Approach 1:
The patent merges the drive function directly into the processing vessel structure by fixing the drive ring to the vessel. The stator element, drive ring with magnets, and processing vessel form an integrated assembly where the drive mechanism and processed material container are combined. This merging reduces overall system complexity while maintaining energy-efficient magnetic drive operation.
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 provides energy-efficient, high-speed operation with improved control over the processing vessel's rotation and position, reducing mechanical failures and enhancing processing efficiency.
Implementation Method 1
the drive ring has means for converting a magnetic field into a torque, wherein the drive ring is provided in cooperation with at least one stator element in each case for generating a rotary movement
Implementation Method 2
the at least one stator element has magnets and/or stator coils and wherein the magnets and/or stator coils of the at least one stator element are provided in cooperation with the means for converting a magnetic field into a rotary movement
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a device (1) and to a method for processing materials, in particular raw materials in the production of paper, preferably comprising a pulper or a pulping drum, comprising a processing vessel (M, M1, M2) that can be rotated about an axis, wherein the processing vessel (M, M1, M2) has at least one drive ring (3), wherein the drive ring (3) is rigidly connected to the processing vessel (M, M1, M2), wherein the drive ring (3) is provided for rotational motion in interaction with at least one stator element (11, 11'), wherein the stator element (11, 11') has electromagnets (13), wherein the electromagnets (13) are provided for producing a torque of the processing vessel (M, M1, M2). In order to produce the torque that acts on the processing vessel (M, M1, M2), the drive ring (3) has either drive magnets (7), in particular permanent magnets, or holes (9). If the drive ring (3) has permanent magnets, the drive unit corresponds to a synchronous machine. If the drive ring (3) has holes (9), the drive unit corresponds to a reluctance ring motor. Advantageously, the position and/or orientation of the processing vessel (M, M1, M2) can be changed. Further advantageously, the drive-relevant quantities such as torque, rotational speed, position, and/or orientation of the processing vessel (M, M1, M2) can be controlled in an open-loop or closed-loop manner by means of a control apparatus (25).