Screw Spindle Machine Filling Channel Sealing
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Solution Overview
Problem
Existing screw spindle machines face challenges in achieving reliable leak protection due to the design of the filling channel, which can lead to sealing issues and potential leaks.
Innovation Solution
The filling channel in the screw spindle machine starts at an end of the housing middle part adjacent to a housing end cap, allowing for improved sealing as the outer opening is covered by the end cap, and a circumferential seal is provided between the housing components to prevent leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the filling channel leads radially inwards from the peripheral surface of the middle part of the housing, then the adhesive gap can be filled with adhesive, but the outer opening of the filling channel is exposed and difficult to seal, leading to potential leaks
Solution Approach 1:
The filling channel is repositioned from a radial orientation to an axial orientation, extending in the longitudinal direction of the housing from the end face toward the adhesive gap. This dimensional change allows the outer opening to be located at the end face where the housing end cap can effectively seal it, while still enabling adhesive filling through the channel to the adhesive gap.
2Ease of operation
If the outer opening of the filling channel is exposed on the peripheral surface, then adhesive can be easily supplied, but sealing becomes difficult and leaks may occur
Solution Approach 1:
The housing end cap acts as an intermediary sealing element that covers the outer opening of the filling channel on the end face of the housing. This intermediary structure provides an effective seal against fluid leakage while still allowing the filling channel to function for adhesive supply during manufacturing.
3Ease of manufacture
If the filling channel starts from the peripheral surface, then the adhesive gap is accessible, but the seal between housing components is compromised
Solution Approach 1:
The filling channel is repositioned from a radial orientation to an axial orientation, extending in the longitudinal direction of the housing from the end face toward the adhesive gap. This dimensional change allows the outer opening to be located at the end face where the housing end cap can effectively seal it, while still enabling adhesive filling through the channel to the adhesive gap.
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a threaded spindle machine comprising: a metal middle housing part (12) arranged between housing end caps (24) and forming a fluid chamber (16) for receiving a plurality of threaded spindles mounted in the housing end caps (24); an insert (18) adhered into the middle housing part, which forms a wear-resistant running surface for the threaded spindles on the inner wall of the fluid chamber (16) and defines an adhesive gap (20) with the inner surface of the middle housing part (12); and at least one filling channel (26) leading from an outer surface of the middle housing part (12) to the adhesive gap (20), characterised in that the filling channel (26) extends from an end of the middle housing part (12), which is adjacent to a housing end cap (24).