Linear Cleaning Peristaltic Metering Pump Hose Replacement
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Solution Overview
Problem
Existing peristaltic pumps face issues of inner hose wear and inconvenient hose replacement due to the fixed back plate design, which leads to accelerated wear and complex maintenance processes.
Innovation Solution
A linear cleaning peristaltic metering pump with a roller lifting assembly, hose-fixing accessory, and anti-backflow accessory, featuring a split-type pump body outer cover and synchronized roller motion to minimize wear and facilitate easy hose replacement, utilizing a lifting screw assembly and power transmission parts for precise control and reduced dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed back plate is used in the peristaltic pump, then the structure is stable and simple, but the hose replacement becomes inconvenient and requires removing the pump cover
Solution Approach 1:
The pump body is divided into separable components: the fixed back plate remains stationary while the roller assembly with its cover can be independently removed. This segmentation allows hose replacement by simply removing the roller cover rather than the entire pump cover, improving maintenance convenience while maintaining structural stability
Solution Approach 2:
The roller assembly is extracted as a separate removable unit from the pump body. The roller cover can be detached independently to access and replace the hose, eliminating the need to remove the fixed back plate or the main pump cover, thus simplifying the hose replacement process
2Productivity
If the working hose is pressed against the fixed back plate by the movable roller, then peristaltic fluid transmission is achieved, but the inner wall of the working hose is easily worn out
Solution Approach 1:
Instead of having the roller press directly against the hose inner wall, the design inverts the pressing mechanism by using a compliant pressing element that distributes the force more evenly. The roller presses the hose against the fixed back plate, but the pressure is distributed across a larger contact area, reducing localized wear on the hose inner wall while maintaining effective fluid transmission
Solution Approach 2:
The pressing parameters are optimized by adjusting the roller pressure, contact area, and pressing duration. The system uses controlled pressing force and distributed contact to reduce the intensity of mechanical action on the hose inner wall, thereby extending hose lifespan while maintaining sufficient compression for effective peristaltic pumping
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 compact, high-precision pump with reduced inner hose wear, simplified operation, and enhanced maintenance by eliminating the need for removing the fixed back plate, ensuring aseptic operation and reduced equipment dimensions.
Implementation Method 1
a lifting screw assembly and a guide shaft. A middle section of the guide shaft is arranged on a linear bearing. Two ends of the guide shaft are respectively connected with an upper guide shaft fixing plate and a lower guide shaft fixing plate, and the lifting screw assembly is connected with the lower guide shaft fixing plate
Implementation Method 2
In state (c), the roller 2 presses tightly against the working hose 3. Since the fluid in the working hose 3 is pressurized during the pumping process, the side A should be in fully contact with the side B during the operation to maintain a certain pressing force, thereby pumping the fluid stably. In that case, therefore side A and side B have the same wall thickness at the contact position
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A linear cleaning peristaltic metering pump includes a pump body (4), a hose fixing accessory (5) and an anti-backflow accessory (6). The hose fixing accessory (5) is configured for arranging a working hose (3). The anti-backflow accessory (6) is configured for clamping and loosening the working hose (3). The pump body (4) is configured for performing reciprocating motion to clamp or loosen the working hose (3), thereby realizing a pumping effect by metering pump. The anti-backflow accessory (6) is in cooperation with the pump body (4). The pump body (4) comprises a roller lifting assembly (42), a roller hose-pressing assembly (44), a pump body outer cover assembly (43) and a power transmission part (41). The power transmission part (41) is configured for driving the roller lifting assembly (42) to perform lifting linear motion, thereby driving the roller hose-pressing assembly (44) to move and to clamp or loosen the working hose (3). The present invention has the advantages of simple structure, convenient operation, high precision and long service life.