Pump Radial Protective Element With External Rod Fastening
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Solution Overview
Problem
Existing radial protective elements in pumps are prone to rapid wear and damage due to exposure to fluid flow, can disrupt the flow, and their installation and exchange are complex and difficult, posing risks of screw breakage and damage to the pump's displacement assembly.
Innovation Solution
A pump design featuring a rod-shaped fastening element that extends along the casing inner wall, fastening the radial protective element outside the fluid flow path, allowing for easy installation and exchange by attaching to the edge of the protective element via a form-fitting connection, eliminating the need for screws within the pump interior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fastening elements are exposed to fluid flow for securing radial protective elements, then the protective elements can be firmly fastened, but the fastening elements wear rapidly and can be damaged by foreign bodies
Solution Approach 1:
The fastening elements are extracted from the fluid flow path and positioned in recesses on the casing outer wall. This removes them from the harmful fluid environment while maintaining their fastening function through form-fitting connections and securing mechanisms on the exterior of the pump housing.
2Reliability
If screws are arranged inside the casing for fastening protective elements, then secure fastening is achieved, but screws can break off due to foreign bodies causing damage to displacement assembly
Solution Approach 1:
The fastening mechanism is extracted from the pump interior to the exterior. Fastening elements with external securing mechanisms (screws, clips, or other fasteners) are positioned on the outer wall of the casing, completely removing the risk of internal screw breakage affecting the displacement assembly or fluid flow path.
3Reliability
If radial protective elements are installed with complex fastening mechanisms, then secure fastening is achieved, but installation and exchange become difficult and time-consuming
Solution Approach 1:
The fastening system is segmented into modular components: removable fastening elements on the casing outer wall and corresponding receptacles on the protective elements. This allows the protective elements to be independently installed or replaced without complex internal fastening operations, significantly simplifying maintenance while maintaining secure attachment.
4Reliability
If fastening elements are positioned in the fluid flow path, then secure attachment of protective elements is achieved, but the flow of fluid is disrupted
Solution Approach 1:
All fastening elements are extracted from the fluid flow path and positioned on the external surface of the casing. This eliminates any interference with fluid flow while maintaining secure attachment of protective elements through external mounting mechanisms that do not protrude into the pump interior.
Data Source
AI summary
A pump for conveying a fluid includes a casing with a casing inner wall, a pump interior, an inlet opening, an outlet opening, a displacement assembly, and a radial protective element arranged in the pump interior in order to line at least one radial section of the pump interior, the radial protective element bearing against a radial section of the casing inner wall. A fastening element is provided which can be arranged in a fastening position in which the fastening element bears against an edge of the radial protective element and in the process fastens the radial protective element in the pump interior, wherein the fastening element has a longitudinal extent which extends from a first axial end of the pump interior along a recess arranged in the casing inner wall.