Vibrating Sieve and Mixing Drum Layout for Continuous Bulk Sterilization
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Solution Overview
Problem
Existing devices for thermal treatment of bulk materials are inefficient in terms of energy consumption, throughput time, and safety, lacking a cost-effective and continuous workflow that minimizes personnel risk.
Innovation Solution
A device comprising a multi-tiered frame with a drum body, vibrating screen, chute, gas burner, and baffle plate, where pre-screened material is fed to the drum, heated by an internal flame, and conveyed by mixing blades, ensuring continuous sterilization with minimal user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotating drum with projections and paddles is used for soil steaming, then the soil can be heated and steamed repeatedly during rotation, but the device complexity increases and energy consumption rises
Solution Approach 1:
The device is divided into separate functional modules: a vibrating screen for soil preparation, a heating chamber for steam generation, and a mixing drum for distribution. This segmentation allows each component to perform its function efficiently without the complexity of a multi-functional rotating drum with projections and paddles.
Solution Approach 2:
The heating function is extracted from the mixing drum and placed in a separate heating chamber. The drum is simplified to only perform mixing and distribution functions, eliminating the need for complex internal projections and paddles while maintaining sterilization effectiveness.
2Productivity
If a shallow plow or cultivator with hollow steaming shoes is used, then large areas can be treated at high speed, but the soil mixing and steam penetration effectiveness is reduced
Solution Approach 1:
A vibrating screen is used to prepare the soil by breaking up clods and creating a fine, uniform structure before steaming. This vibration also enhances steam penetration into the soil during treatment, ensuring thorough sterilization while maintaining high treatment speed.
Solution Approach 2:
The vibrating screen acts as an intermediary between the raw soil and the steaming process, pre-processing the soil to optimize its structure for steam penetration. This intermediary step ensures both high productivity and effective steam treatment.
3Reliability
If a stationary soil steaming machine with rotating drum is used, then thorough sterilization is achieved, but the throughput time increases and energy consumption rises
Solution Approach 1:
The device enables continuous operation where soil is constantly fed through the vibrating screen, processed in the heating chamber, and distributed by the mixing drum. This continuous workflow eliminates idle time between batches while maintaining thorough sterilization, significantly reducing throughput time compared to stationary batch processing.
Solution Approach 2:
The mixing drum automatically distributes the steamed soil back into the processing system, creating a self-sustaining continuous cycle that minimizes manual intervention and maximizes throughput efficiency while maintaining sterilization quality.
4Adaptability or versatility
If multiple devices are mounted on a mobile frame, then versatility is improved, but the device complexity and operational difficulty increase
Solution Approach 1:
The vibrating screen, heating chamber, and mixing drum are merged into a single integrated mobile unit with a unified frame and drive system. This combination provides multiple functions (soil preparation, steaming, mixing, and distribution) in one device, improving versatility while maintaining operational simplicity through centralized control.
Solution Approach 2:
The mobile device is designed as a multi-functional unit that can perform soil screening, heating, steaming, and mixing operations simultaneously or sequentially. This universal design allows one operator to manage all functions from a single control point, enhancing versatility without increasing operational complexity.
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
Enables rapid and energy-efficient sterilization of bulk material with reduced safety risks, requiring only one operator and minimizing energy loss.
Implementation Method 1
a gas burner B arranged outside the drum body T, the flame of which extends into the interior of the drum body T
Implementation Method 2
a vibrating screen A arranged on the support frame T2 located at a distance above it
Data Source
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AI summary
To design a device for the thermal treatment of bulk materials in such a way as to enable continuous and energy-efficient feeding and reliably avoid any safety risk to the user, it comprises: • a multi-tiered frame (G) made of tubular frames (RR), in which a drum body (T) with mixing paddles (M) is mounted on the lower support frame (T1) in the lowest tier, and a vibrating screen (A) is arranged on the support frame (T2) located at a distance above it in the uppermost tier, • a chute (RU) for feeding the pre-screened mixture to a drum opening (E) of the drum body (T), • a gas burner (B) arranged outside the drum body (T), the flame of which extends into the interior of the drum body (T), and • a baffle plate (PB) arranged inside the drum body (T) above the flame. Furthermore, this task is accomplished by an operating method for the thermal treatment of bulk materials using the device.