Transverse Diaphragm Pump Housing for Membrane Replacement
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Solution Overview
Problem
Existing diaphragm pumps face challenges in simplifying the process of replacing the membrane without affecting other components and in reducing the dead volume between the diaphragm and discharge valve to facilitate self-priming.
Innovation Solution
The diaphragm pump design features a housing oriented transversely with a plug held by a ring, allowing easy removal and replacement of the membrane and valve assembly without interfering with other components, and incorporates umbrella-type or duckbill valves to minimize dead volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the membrane is held in place by a complex assembly structure, then the membrane is securely retained, but the dismantling and replacement of the membrane becomes complicated and time-consuming
Solution Approach 1:
The pump assembly is divided into modular components: the membrane can be independently removed by first detaching the retaining ring from the cylindrical portion, then extracting the membrane from the control chamber. This segmentation allows the membrane to be replaced without disassembling the entire pump body or affecting other components.
Solution Approach 2:
The membrane and its retaining structure are designed as a separable unit that can be extracted from the pump body. The retaining ring with its cylindrical portion can be removed from the housing, allowing the membrane to be taken out and replaced independently, minimizing intervention on other pump components.
2Reliability
If the dead volume between the diaphragm and discharge valve is large, then the valve can be positioned for optimal sealing, but self-priming of the pump becomes difficult
Solution Approach 1:
The discharge valve is designed with a movable sealing element that can dynamically adjust its position. The valve core can move closer to the diaphragm during operation, minimizing the dead volume between them while maintaining optimal sealing when closed. This dynamic adjustment allows the system to achieve both good sealing and effective self-priming.
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
This design simplifies membrane replacement and reduces dead volume, enhancing self-priming capabilities and maintaining a reliable, efficient operation.
Implementation Method 1
a control duct suitable for connecting the control chamber to a control connection of the body, this control duct making it possible to alternately apply a depression and a pressure to the membrane
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A diaphragm (M) pump comprising a body (1) comprising a suction connection (2) and a discharge connection (3), a suction valve (4) and a discharge valve (5); a control chamber (6) in which the diaphragm (M) is disposed, and a working chamber (10) located on the side of the diaphragm opposite the control chamber; a control pipe (8) suitable for linking the control chamber (6) to a control connection (9) of the body, said control pipe making it possible to alternately apply a vacuum and a pressure on the diaphragm; the body (1) comprises a housing (11) oriented transversely relative to the control pipe (8), said housing being open towards the outside at one end, and closed at the other end by a bottom (13) comprising a suction opening (14) and a discharge opening (15), the diaphragm (M) being positioned close to the bottom, and being held by a cap (16) engaged in the housing, said cap having a recess forming the control chamber (6), linked to a passage (7) that opens on the lateral surface of the sleeve to establish communication with the control pipe (8), the cap (16, 16a) being held in place in the housing by a ring (17) linked with the pump body.