Mammoth Pump Head Shields Melt from Ambient Air
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Solution Overview
Problem
Existing devices for pumping hot melts using the mammoth pump effect often expose the melts to ambient air, which can reduce their purity and affect further processing, such as casting or atomizing, especially when handling metals, metal alloys, or metal compounds like sulfides or arsenides.
Innovation Solution
A device with a pump head that shields the melt and conveying gas from ambient air, featuring a riser pipe, discharge pipe, and gas discharge pipe, where the riser pipe protrudes into the pump head, ensuring the melt flows gas-free into the discharge pipe, and an overflow pipe prevents excessive melt from rising above the pump head, maintaining a closed circuit and preventing uncontrolled gas or dust escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the riser tube exit simply ends at the edge of the next vessel or with basic venting arrangements, then the device structure is simple, but the melt comes into contact with ambient air reducing its purity
Solution Approach 1:
The patent implements a nested structure where the riser tube is positioned inside a pump head housing, which in turn is connected to a discharge pipe. This nested arrangement allows the melt to be contained within the pump head during transfer, shielding it from ambient air while maintaining a compact and relatively simple overall structure.
Solution Approach 2:
The patent creates a controlled environment within the pump head by using a conveying gas line that introduces inert gas (such as nitrogen or argon) into the riser tube. This inert gas atmosphere prevents the melt from contacting reactive ambient air, thereby maintaining melt purity during the pumping process.
2Object-affected harmful factors
If a closed pump head housing is used to shield melt from ambient air, then melt purity is maintained, but the device complexity increases
Solution Approach 1:
The pump head housing serves multiple functions simultaneously: it acts as a shield to protect the melt from ambient air, provides a chamber for inert gas to maintain atmosphere, facilitates the separation and discharge of conveying gas through dedicated outlets, and guides the melt flow from the riser tube to the discharge pipe. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The pump head is designed with segmented functional zones: an inlet region where the riser tube introduces melt, a containment chamber where inert gas protects the melt, a gas discharge region with dedicated outlets for conveying gas removal, and a discharge region leading to the discharge pipe. This segmentation allows each function to be optimized independently while maintaining overall system integrity.
3Object-affected harmful factors
If the riser pipe protrudes further into the pump head than the discharge pipe, then the melt covers the inlet of the discharge pipe preventing reactive gas entry, but the device complexity increases
Solution Approach 1:
The patent positions the riser tube inlet and discharge pipe inlet at similar elevation levels within the pump head, creating an equipotential arrangement for melt flow. The riser tube protrudes further into the pump head to ensure its outlet is below the expected melt level, while the discharge pipe inlet is positioned at a comparable level. This arrangement ensures that melt naturally covers the discharge pipe inlet through level equalization, preventing reactive gas entry without requiring complex mechanical barriers or additional components.
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 effectively shields the melt from ambient air, maintaining its purity during transport and ensuring controlled gas discharge, enhancing the quality of the workpiece or semi-finished product by preventing reactive gas entry and ensuring a closed melt circuit.
Implementation Method 1
A device with a pump head that shields the melt and conveying gas from ambient air... The pump head has a larger cross-section than the riser pipe, downcomer pipe or gas vent pipe... into which the riser pipe and the outlet pipe open
Implementation Method 2
Device and method for pumping hot melts using the mammoth pump effect... a riser pipe which is open on both sides and which is connected at its outlet to at least one discharge pipe via a pump head, a conveying gas line which ends in the area of the inlet of the riser pipe, for conveying melt through the riser pipe
Implementation Method 3
a conveying gas line which ends in the area of the inlet of the riser pipe, for conveying melt through the riser pipe
Implementation Method 4
at least one gas discharge pipe located opposite the riser pipe and the outlet pipe for removing the conveying gas
Implementation Method 5
discharge pipe through which hot water flows when the device is in operation, melt rising from the riser pipe can flow off freely
Data Source
Figure 1
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AI summary
A device for pumping hot melts (3) using the mammoth pump effect is shown, the device comprising: - a riser pipe (1) open at both ends, which is connected at its outlet to at least one drain pipe (8) via a pump head (6), - a conveying gas line (4) which terminates in the region of the inlet of the riser pipe (1), for conveying melt (3) through the riser pipe (1), - a drain pipe (8) through which, in the operating state of the device, hot melt (3) rising from the riser pipe (1) can flow freely.To largely shield the molten metal from the ambient air during transport, a pump head (6) designed as a closed housing is provided, into which the riser pipe (1) and the outlet pipe (8) open, as well as at least one gas exhaust pipe (7) opposite the riser pipe (1) and the outlet pipe (8) for removing the conveying gas (2), such that the pump head (6) has a larger cross-section than the riser pipe (1), the outlet pipe (8) or the gas exhaust pipe (7), such that the riser pipe (1), viewed in the direction of the riser pipe, projects further into the pump head (6) than the outlet pipe (8), and that an overflow pipe (9) opens into the pump head (6) such that its end, viewed in the direction of the riser pipe (1), projects further into the pump head (6) than the riser pipe (1), and that in the operating state of the device, molten metal (3) can flow freely out of the pump head (6).