Sampling Device Valve Body Cross-Sectional Area Safety
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Solution Overview
Problem
Traditional methods for sampling dry bulk products from trailers are hazardous due to the need for individuals to climb or be lifted to access the top hatch, leading to safety incidents and injuries.
Innovation Solution
A sampling device with a valve body connected to the unloading pipe, featuring a first outlet for discharging bulk product and a second outlet with a smaller cross-sectional area for safely drawing a sample, which can be pneumatically pressurized and equipped with a lever-actuated butterfly valve for controlled sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional sampling methods are used where individuals climb or are lifted to access the top hatch of a trailer, then a sample of dry bulk product can be retrieved, but safety incidents and injuries occur due to the hazardous nature of the operation
Solution Approach 1:
The invention extracts the sampling function from the hazardous top-hatch access operation by providing a dedicated sampling port on the trailer wall. This allows sampling to be performed at ground level through a specifically designed outlet, completely separating the sampling operation from the dangerous climbing and lifting activities that previously were necessary to access the bulk material.
Solution Approach 2:
The sampling port acts as an intermediary element between the bulk material inside the trailer and the sampling device outside. It provides a controlled interface that allows material to be accessed safely at ground level, eliminating the need for direct human access to the hazardous top hatch area while still enabling representative sampling.
2Object-affected harmful factors
If a sampling device with a small cross-sectional area outlet is used, then safe sampling can be performed at ground level, but the device complexity increases compared to traditional methods
Solution Approach 1:
The sampling port is designed as a multi-functional component that serves both as a sampling outlet and as part of the trailer's unloading system. The port can be used for both sampling operations and for controlling the main material flow, eliminating the need for separate complex sampling equipment and reducing overall system complexity despite the added safety features.
3Measurement precision
If the second outlet has a smaller cross-sectional area than the first outlet, then a representative sample can be obtained, but the flow rate through the sampling outlet is reduced
Solution Approach 1:
The sampling port is designed with different outlet sizes optimized for different functions: the first outlet (larger cross-sectional area) is optimized for main material flow and quick clearing operations, while the second outlet (smaller cross-sectional area) is optimized for obtaining representative samples. This local differentiation of outlet qualities allows both high-speed material handling and precise sampling to occur simultaneously without compromising either function.
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 solution enables safe and efficient sampling of dry bulk products without the need for climbing, significantly reducing safety incidents and allowing for controlled sampling of dry bulk products from various containers.
Implementation Method 1
a pneumatic system for pressurizing the container to force the dry bulk product through the unloading pipe
Data Source
AI summary
A sampling device has a valve body that comprises an inlet for connecting to an unloading pipe of a container containing dry bulk product, the inlet being shaped to receive a flow of dry bulk product from the container. The valve body has a first outlet which, when opened, discharges the dry bulk product that enters the valve body through the inlet. The valve body also has a second outlet which, when opened, discharges a sample of the dry bulk product, the second outlet having a cross-sectional area that is smaller than a cross-sectional area of the first outlet. The sampling device enables a sample of dry bulk product, e.g. cement, slag, fly ash, cement kiln dust, silica fume, silica sand, lime, alumina, flour, or any other similar dry powdery substance to be obtained safely from a transport container or vessel.