Rotary Slide Valve Assembly With Integrated Gap Sealing
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Solution Overview
Problem
Existing rotary slide valves require complex and costly assembly processes due to the need for sealing means, which are prone to wear and fatigue, affecting the valve's tightness and longevity.
Innovation Solution
A method for producing a rotary slide valve that involves forming a precise gap between the rotary slide and the valve housing during assembly, allowing the rotary slide to rotate while maintaining sufficient sealing without the need for additional sealing means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing means are used between the rotary slide and valve housing, then tightness is ensured, but assembly complexity and cost increase
Solution Approach 1:
The invention extracts and eliminates the sealing means from the rotary slide valve assembly. Instead of using separate sealing elements between the rotary slide and valve housing, the invention forms an integrated sealing structure directly in the injection molding process, thereby simplifying assembly while maintaining tightness
Solution Approach 2:
The invention merges the sealing function into the main body components by forming a sealing groove and sealing ledge directly in the injection-molded rotary slide and valve housing. This integration eliminates the need for separate sealing means and reduces assembly complexity
2Reliability
If sealing means are used between the rotary slide and valve housing, then tightness is ensured, but production cost increases
Solution Approach 1:
The invention removes the need for separate sealing means and their associated production costs. The sealing function is achieved through integrated features formed during injection molding, eliminating material and manufacturing costs for separate sealing components
Solution Approach 2:
The sealing structure is merged into the injection molding process itself, forming sealing grooves and ledges as integral parts of the rotary slide and valve housing. This consolidation reduces the total number of parts and lowers production costs
3Reliability
If sealing means are used between the rotary slide and valve housing, then tightness is ensured, but component durability decreases due to wear and fatigue
Solution Approach 1:
The invention eliminates sealing means that are subject to wear and fatigue by forming an integrated sealing structure in the injection-molded components. The sealing is achieved through the geometry of the sealing groove and ledge rather than through separate sealing elements that degrade over time
Solution Approach 2:
The injection-molded components themselves provide the sealing function through their own geometric features (sealing groove and sealing ledge), eliminating the need for separate sealing means. The components seal themselves through their molded structure, improving durability
4Ease of operation
If a gap is formed between the rotary slide and valve housing to allow rotation, then rotational freedom is achieved, but sealing performance may deteriorate
Solution Approach 1:
The invention applies local quality by creating a sealing ledge at the specific location where the rotary slide contacts the valve housing. This localized feature provides sealing exactly where needed while maintaining gaps elsewhere to allow rotational movement
Solution Approach 2:
The sealing groove and sealing ledge are designed to create an equipotential sealing interface that maintains consistent sealing performance across the contact surface, allowing the rotary slide to rotate freely while preventing leakage through the balanced sealing geometry
Data Source
AI summary
A method for producing a rotary slide valve for regulating a flow of fluid, including a rotary slide (02) which is rotatably mounted about a rotational axis (R) in a valve housing, includes producing the rotary slide (02) by injection molding, producing at least one circumferential or casing section (04) of the valve housing (03) by injection molding, and installing the rotary slide (02) within the valve housing (03). A gap between the rotary slide (02) and the directly adjacent valve housing circumferential or casing section (04) of the valve housing (03) in the radial direction, allows the rotary slide (02) to rotate about the rotational axis (R) and facilitates a seal which does not exceed a tolerable leak between the rotary slide (02) and the circumferential or casing section (04) of the valve housing (03).