Dustproof Gate Valve With Dust Pipe Isolation
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Solution Overview
Problem
Conventional gate valves fail to prevent dust from entering the internal components when used in dusty environments, as the valve member moves away from the port when opened, allowing dust to contaminate the valve's interior.
Innovation Solution
A dustproof gate valve design featuring a housing, slide, driver, swing arm, and dust pipe that completely closes the valve port when closed and shields the gap between the valve port and housing with a dust pipe when opened, preventing dust from entering the valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the valve member is moved away from the valve port to open the gate valve, then the gas flow is enabled to pass through, but dust will easily enter the interior of the gate valve from the valve port to contaminate the components
Solution Approach 1:
A dust pipe is introduced as an intermediary component between the valve port and the accommodation space. The dust pipe extends from the valve port into the accommodation space, creating a protective barrier that prevents dust from directly entering the internal components while still allowing gas to flow through the valve when open.
Solution Approach 2:
The dust pipe acts as a flexible protective barrier that can be positioned to shield the accommodation space. The pipe structure creates a physical separation between the external environment (where dust exists) and the internal components, allowing gas to pass through while blocking dust particles.
2Reliability
If a conventional gate valve design is used to block dust when closed, then the sealing effect is achieved, but when opened the valve port is left in communication with the internal space allowing dust entry
Solution Approach 1:
The dust pipe is pre-positioned within the accommodation space before the valve is opened. This preliminary arrangement ensures that as soon as the valve member moves away from the valve port, the dust pipe is already in place to prevent dust from entering the internal components, eliminating the need to wait for the valve to be fully open.
Solution Approach 2:
The dust pipe serves as a continuous protective intermediary that remains in place whether the valve is open or closed. It provides ongoing protection against dust contamination while not interfering with the sealing function when the valve is closed or the gas flow function when open.
Data Source
AI summary
A dustproof gate valve includes a housing having a first panel, a second panel, and a valve port on each of the first and second panels, a slide including a body and a valve member and drivable to move between a first position and a second position, the slide closing the valve port of the first panel when at the first position, a driver mounted in the housing, a swing arm having one end thereof connected to the driver for moving the slide, and a dust pipe mounted in said body. When the slide is at the second position, the dust pipe is disposed between the valve port of the first panel and the valve port of the second panel, and the pipe wall of the dust pipe separates the valve ports of the first and second panels from the accommodation space.