Guided Valve Core Structure for Low-Torque Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing valves for intermediate bulk storage containers have complex structures that occupy large spaces and require significant rotation angles, leading to inefficient operation and sealing issues.
Innovation Solution
A valve design with a compact and simple structure featuring a driving member connected directly to a valve core, allowing for radial rotation and axial movement, utilizing guiding ribs and blocks to facilitate opening and closing with low torque, large opening angles, and reliable sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a guiding groove type rising-stem ball valve with an S-shaped guiding groove is used, then the valve stem can drive the ball to disengage and rotate, but the guiding groove occupies a large space and results in a large rotation angle
Solution Approach 1:
The guiding function is segmented between the guiding rib on the driving member and the guiding block on the valve core, allowing the guiding groove to be eliminated or minimized in the housing. This segmentation enables compact space utilization while maintaining the valve's operational functionality.
Solution Approach 2:
Instead of using a guiding groove in the housing to guide the valve stem, the invention inverts the approach by placing guiding surfaces on the moving components themselves (guiding rib on driving member, guiding block on valve core). This inversion eliminates the need for a large guiding groove in the stationary housing.
2Ease of operation
If a track-type mechanism with a track ring and double-pin plate is used, then the valve plug can be guided, but the transmission device has a complex structure and occupies a large amount of space outside the valve body
Solution Approach 1:
The driving member integrates multiple functions: it serves as both the actuator for rotation and the guide for axial movement through its guiding rib. The valve core integrates the sealing element and the guided component through its guiding block. This merging eliminates the need for separate track rings, pin plates, and adjusting mechanisms, significantly simplifying the transmission device.
Solution Approach 2:
The driving member is designed as a multi-functional component that simultaneously provides rotational actuation and axial guidance. The guiding rib on the driving member works with the guiding block on the valve core to achieve both functions, eliminating the need for dedicated guiding mechanisms and reducing overall device complexity.
3Reliability
If a long S-shaped guiding groove is used in the valve stem, then the valve can open and close, but the rotation angle becomes large and the structure occupies more space
Solution Approach 1:
The guiding function transitions from a two-dimensional S-shaped groove in the valve stem to a combination of radial rotation guided by the guiding rib and axial movement guided by the guiding block. This dimensional change allows for a more compact guiding path that achieves the same sealing reliability with reduced length and space occupation.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Disclosed in the present invention is a valve, comprising: a housing having a passage extending therethrough; a flange being in a sealed connection with one end of the housing; an inner valve seat being arranged in the passage and in a sealed connection with the housing; a valve core being movably arranged in the passage; and a driving member passing through the housing and being connected to a mounting surface of the valve core; the mounting surface of the valve core is provided with a guiding block protruding towards the driving member, and the guiding block is provided with an inner contour guiding surface; the driving member is provided with a guiding rib, which is provided with an outer contour guiding surface; the outer contour guiding surface cooperates with the inner contour guiding surface to drive the valve core to rotate to a switching position in the radial direction of the passage, and when the valve core rotates to the switching position, the end of the valve core connected to the driving member is driven to move axially towards the inner valve seat to press the inner valve seat to close the passage. Compared with the prior art, the valve has a compact and simple structure and is easy to operate; and when the valve is opened, low torque is needed, and a large opening angle, large flow, and reliable sealing are achieved.