Peristaltic Pump Head Toggle Clamp With Sliding Tube Clearance
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Solution Overview
Problem
The existing peristaltic pump designs have limited lifting height due to the size of the eccentric wheel, resulting in narrow spaces between clamps, making tube replacement inconvenient, especially for large-diameter tubes, and prone to uncontrollable tube damage during installation.
Innovation Solution
A toggle-type open-close clamping structural assembly with a driving lever that allows the upper tube clamp to lift and lower slidably with the upper pressing block, increasing relative displacement between clamps and providing more operation space, featuring a pivotally connected driving lever with a return spring for vertical guidance and automatic folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the upper pressing block and upper tube clamp are fixed as a whole, then the structure is simple, but the operation space for tube replacement is narrow
Solution Approach 1:
The upper pressing block is divided into two independently movable parts: the upper pressing block itself and the upper tube clamp. The upper tube clamp can slide vertically on the upper pressing block, allowing independent movement. This segmentation enables the clamp to be manually adjusted to create sufficient operation space for tube replacement while maintaining a relatively simple overall structure.
2Volume of moving object
If the eccentric wheel size is limited, then the pump head size is compact, but the lifting height of the upper pressing block is limited
Solution Approach 1:
The system transitions from a fixed rigid connection to a dynamic sliding connection. The upper tube clamp can slide vertically on the upper pressing block along a guide groove, allowing the clamp to move independently beyond the limited lifting height provided by the eccentric wheel. This dynamic adjustment capability effectively overcomes the height limitation while keeping the pump head compact.
3Device complexity
If manual lifting of the upper tube clamp is required, then the structure is simple, but the operation is cumbersome and time-consuming
Solution Approach 1:
The upper tube clamp is pre-equipped with a vertical sliding mechanism on the upper pressing block, allowing it to be easily pulled upward by hand without requiring complex mechanical assistance. This preliminary design of the sliding interface enables quick and convenient adjustment of the clamp position, significantly reducing tube replacement time while maintaining structural simplicity.
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
Enhances the operation space for tube installation and replacement, making the process more efficient and convenient, especially for larger tubes, by increasing the relative displacement between clamps and ensuring reliable and uniform force distribution.
Implementation Method 1
A toggle block is fixed on the upper pressing block through a pin shaft and can rotate around the pin shaft. One end of the toggle block is used to lift the upper tube clamp... In the process that the toggle block is lifted with the upper pressing block, one end of the toggle block will rotate counterclockwise around the pin shaft under the action of the inclined plane, and the other end of the toggle block will toggle the upper tube clamp to move upward relative to the upper pressing block
Implementation Method 2
A toggle block is fixed on the upper pressing block through a pin shaft and can rotate around the pin shaft. One end of the toggle block is used to lift the upper tube clamp, one end passes through the opening on the main body for the movement of the toggle block, and is abutted on a inclined plane of a top pressure toggle block of the body
Implementation Method 3
A toggle block is fixed on the upper pressing block through a pin shaft and can rotate around the pin shaft. One end of the toggle block is used to lift the upper tube clamp... and the other end of the toggle block will toggle the upper tube clamp to move upward relative to the upper pressing block, thus increasing a relative displacement between the upper tube clamp and the lower tube clamp
Data Source
AI summary
A toggle-type open-close clamping structural assembly and a pump head of a peristaltic pump comprising same. The toggle-type open-close clamping structural assembly comprises: a lower pipe clamp and an upper pipe clamp (1) that are oppositely arranged and that are used to form a pair of hose clamp hoops; an upper pressure block used for lifting and lowering to open and close; and a driving lever (4) used for enabling the upper pipe clamp (1) to follow the upper pressure block to lift, slip and follow-up. The driving lever (4) is pivotally connected to the upper pressure block. The upper pipe clamp (1) and one end of the driving lever (4) are overlappingly disposed in a clamping port reserved on the upper pressure block, and the other end of the driving lever (4) is abutted against a fixing part (5) that serves as fixing reference. In the lifting process of the upper pressure block, the upper pipe clamp (1) is driven to lift, and meanwhile, the driving lever (4) follows up and rises and lifts up the upper pipe clamp (1), so that the upper pipe clamp (1) is far away from the lower pipe clamp, thereby preventing the driving lever (4) from wear and tear and achieving simple and efficient replacement of hoses.