Rotary C-Gate Vacuum Valve for Tool-Free Cleaning and Sealing
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Solution Overview
Problem
Existing valves used in food processing are limited in their ability to be quickly disassembled and cleaned, particularly for segmented ball valves, which hinders efficient maintenance and sanitation.
Innovation Solution
A split body, rotary C gate, removable stem vacuum valve design that allows for hand disassembly and reassembly without tools, featuring a gasketless gate with axles and a housing body that can be easily cleaned, ensuring a vacuum seal is maintained during disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If segmented ball valves are used in food processing, then the valve can provide flow control functionality, but the valve cannot be quickly disassembled and cleaned
Solution Approach 1:
The valve body is divided into multiple separable segments including endcaps, a middle section, and internal components like the C gate and axles. This segmentation allows each part to be independently removed and cleaned, transforming a complex cleaning process into simple individual component washing, directly resolving the contradiction between cleaning speed and structural complexity
Solution Approach 2:
The C gate, axles, and other internal components are extracted from the valve body as removable elements. The C gate can be completely removed from the middle valve assembly for external cleaning, and the axles can be detached for separate maintenance. This extraction principle enables rapid disassembly for cleaning without compromising the valve's structural integrity or functionality
2Ease of operation
If traditional valves with multiple gaskets and seals are used, then the valve can provide sealing functionality, but the valve requires tools for disassembly and reassembly
Solution Approach 1:
Multiple sealing functions are merged into a single gasketless C gate design. The C gate itself acts as the sealing element through its curved sealing face that directly contacts the inner aperture body, eliminating the need for separate gaskets and seals. This merger simplifies the disassembly process while maintaining reliable vacuum sealing through the integrated design
Solution Approach 2:
The valve components are designed to be self-servicing through hand-operated disassembly and reassembly. The handle extensions on endcaps and the polygonal interface between the C gate and axles enable users to easily manipulate and reconnect components without requiring specialized tools, making the valve self-maintainable while preserving seal integrity through the simple connect-disconnect mechanism
3Ease of manufacture
If a gasketless gate design is used, then the gate can be easily cleaned without additional gaskets, but the gate requires precise positioning to maintain vacuum seal
Solution Approach 1:
The C gate features a curved sealing face that mates with a corresponding curved surface on the inner aperture body. This curvature provides self-aligning properties during assembly, automatically positioning the sealing surfaces correctly when components are connected. The curved geometry tolerates minor manufacturing variations while maintaining effective vacuum sealing, reducing the precision requirements compared to flat sealing surfaces
4Reliability
If axles with polygonal interfaces are used, then the C gate can be securely held in position, but the assembly requires precise mating of polygonal surfaces
Solution Approach 1:
The axle and C gate interface uses asymmetric polygonal shapes (such as square or hexagonal profiles) rather than circular or symmetric connections. This asymmetry provides inherent orientation and positioning, ensuring the C gate can only be assembled in the correct rotational position. The asymmetric geometry prevents misalignment while maintaining secure holding, and the features can be manufactured with standard tolerances without requiring ultra-precise fitting
Data Source
AI summary
A split body, rotary C gate, removeable stem vacuum valve using an input assembly with handle extensions that allow for hand movement of the incoming pipe to access an inner aperture body with a curved sealing face that directly seals to a C shaped gasketless gate that can be rotated into and out of the inner body aperture for easy cleaning. The gasketless gate is held in position using gate axles with an outer axle stem connected to a polygon lower body that mates into a matching polygon aperture on the gasketless gate. The middle valve assembly's gasketless housing body defines upper and lower axle washer pockets for locating the axles for proper operation and simple axle pins for securing the axles in position.