Solid Sample Transfer Device with Integrated Weighing and Screw Mechanism
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Solution Overview
Problem
Existing methods for handling solid samples in laboratories are time-consuming, labor-intensive, and prone to contamination due to the inability to accurately pipette or transfer solid samples using traditional liquid transferring devices.
Innovation Solution
A solid transferring device comprising a main body with a casing, power system, weighing system, and control system, along with a lance mechanism that allows for precise weighing and transfer of solid samples using a motor-driven screw mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional solid weighing method using a medicine spoon and electronic scale is used, then the solid sample can be weighed, but the process is time-consuming and labor-intensive
Solution Approach 1:
The patent combines the weighing function and transfer function into a single integrated device. The weighing sensor is integrated into the main body, and the lance with screw mechanism is combined with the weighing system, allowing simultaneous weighing and transfer operations to be performed by one device rather than separate operations with multiple tools.
Solution Approach 2:
The device performs automatic weighing through the integrated weighing sensor that detects the weight of solid samples as they are transferred onto the lance. The system automatically calculates and displays the weight without requiring manual reading and recording, enabling the device to serve itself in the measurement process.
2Ease of operation
If a traditional solid weighing method using a medicine spoon is used, then the solid sample can be transferred, but samples may scatter and contaminate the operating table
Solution Approach 1:
The lance is designed with a closed hollow structure that acts as a containment shell. Solid samples are transferred into this enclosed space through the screw mechanism, preventing them from scattering onto the operating table. The lance shell provides a physical barrier that confines the sample during transfer operations.
Solution Approach 2:
The lance serves as an intermediary container between the source of solid samples and the destination. Instead of directly pouring or transferring samples that could scatter, the lance intercepts and contains the samples during transfer, mediating the movement in a controlled manner that prevents contamination.
3Device complexity
If a liquid transferring device is used for solid samples, then the device structure is simple, but solid samples cannot be accurately pipetted
Solution Approach 1:
The patent replaces the air displacement mechanism used in liquid pipettes with a mechanical screw-driven system. The rotation of the screw converts rotational motion into linear motion, enabling precise control of solid sample transfer. This mechanical substitution allows accurate handling of solid samples while maintaining a relatively simple device structure.
Solution Approach 2:
The device incorporates a rotatable lance with a screw mechanism that can dynamically adjust its position and motion. The lance can rotate to different angles and the screw can advance or retract to control sample transfer precisely. This dynamic capability enables accurate solid sample transfer that static or simple mechanical systems cannot achieve.
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 device enables fast, accurate, and reliable weighing and transfer of solid samples, improving laboratory efficiency by simplifying the process and reducing the risk of contamination.
Implementation Method 1
The driving mechanism comprises a motor configured to control the transmission shaft to rotate forwardly or reversely, that when the transmission shaft head is inserted into the matching transmission portion, drives the screw to rotate forwardly or reversely to screw in to take a solid sample or screw out to release the solid sample
Implementation Method 2
The weighing system includes a weighing sensor mounted in the casing
Data Source
AI summary
A solid transferring device includes a main body and a lance. The main body comprises a casing, a power system, a weighing system including a weight sensor and a control system. The power system comprises a motor and a transmission shaft having a transmission shaft head for matching a lance transmission head. The lance includes the lance shell, a screw and the lance transmission head, and an upper part of the lance shell has a matching engaging portion for matching the tip portion of the sleeve to allow the main body to catch the lance. The motor is configured to control the transmission shaft to rotate forwardly or reversely, that when the transmission shaft head is inserted into the lance, drives the screw to rotate forwardly or reversely to screw in to take a solid sample or screw out to release the solid sample.