Rotating Drain Valve for Liquid Packages Preventing Spillage
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Solution Overview
Problem
Large volume standing liquid-filled packages with thin plastic foil materials face difficulties in emptying contents without spillage when using a draining valve on the upper surface, as they are prone to yieldability when tipped over.
Innovation Solution
A draining device comprising a housing part and a movable draining part attached via an axis in a joint, with a puncturing device to create a passage through the package wall, allowing liquid to flow out through a channel system from the package to the outside, preventing leakage and spillage during transport and emptying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a draining valve is arranged on the upper surface of the package, then the package structure is simple, but the package becomes yieldable when tipped over causing spillage
Solution Approach 1:
The draining device is divided into two main segments: a housing part attached to the package wall and a draining part that can rotate independently. This segmentation allows the draining part to be positioned optimally for drainage while the housing remains fixed on the package, resolving the contradiction between simple structure and spillage prevention.
Solution Approach 2:
The draining part is made rotatable relative to the housing part via a joint mechanism. This dynamic capability allows the draining part to rotate into a downward-inclining position during drainage, preventing spillage, while maintaining a compact configuration when not in use.
2Reliability
If a side wall draining valve is used, then spillage is prevented, but the package requires a lead-through in the side wall increasing complexity
Solution Approach 1:
The draining function is extracted from the package wall itself and implemented as a separate, self-contained draining device that attaches to the external surface of the package. This eliminates the need for lead-throughs in the package wall, maintaining reliability while reducing structural complexity.
Solution Approach 2:
The draining part rotates within the housing part, with the outlet of the first channel abutting the inlet of the second channel in a nested configuration. This nesting allows the draining mechanism to be compact and self-contained without requiring external wall modifications.
3Productivity
If the outlet of the first channel is always in contact with the inlet of the second channel, then drainage is continuous, but liquid remains in the second channel when closed causing spillage
Solution Approach 1:
The draining part rotates to change the inclination of the second channel. During drainage, the channel inclines downward to facilitate continuous flow. When closed, the draining part rotates to a position where the outlet of the first channel does not contact the inlet of the second channel, and the channel inclines upward to drain remaining liquid, preventing spillage.
Solution Approach 2:
The inclination angle of the second channel is dynamically changed by rotation of the draining part. This parameter change allows the channel to transition between a downward-inclining position for efficient drainage and an upward-inclining position for preventing spillage, resolving the contradiction between continuous drainage and leakage prevention.
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 provides a cost-effective and efficient method for emptying large volume liquid packages without the need for a side wall lead-through, preventing leakage during transport and ensuring spillage is avoided, while maintaining package integrity and preventing contamination.
Implementation Method 1
liquid material located in the package may be made to flow out through the inlet of the housing part, the first channel, the outlet of the housing part, the inlet of the draining part, the second channel and the outlet of the draining part
Data Source
Figure 1~3
Figure 4~6
Figure 7~9
AI summary
The invention relates to a draining device and a package (10) with such a draining device for a liquid material. The draining device (2) comprises a housing part (4) and a draining part (6), which is articulated around an axis (A) in relation to the housing part (4). The housing part (4) comprises a first channel (20) with an inlet (22) which ends on the inside (14) of the package (10). The draining part (6) comprises a second channel (26) with an outlet (29) which ends on the out- side (13) of the package (10). The housing part (4) is arranged to be attached on the outside of the wall (8) of the package (10). The draining part (6) is arranged with at least one puncturing device (7) in its end (9) being arranged opposite to the outlet (29). The puncturing device (7) is arranged to puncture the wall (8) of the package (10) so that at least one passage (15) is formed through which liquid material (11) being located in the package (10) may be made to flow out through the draining part (6) to the outside (13) of the package (10).