
Manual Handwheel Square Port Spiral Gate
Quick Cut-off Control for Dry Bulk Solids
The Manual Handwheel Square Port Spiral Gate is an ideal isolation and flow control device specifically engineered for managing non-viscous dry bulk materials, powders, and granular materials. Unlike traditional knife gate valves, this spiral (screw-driven) gate mechanism is designed for frequent starting, quick cut-off, and precise flow modulation.
Featuring a simple structure, flexible operation, and light weight, the valve is built with a Square Port that makes it perfectly suited for integration at the top, bottom, and import/export points of various industrial equipment like hoppers and chutes. The Manual Handwheel allows operators to easily and quickly adjust the gate opening at any time, providing fine control over material flow rate.
Key Features & Bulk Material Advantages
| Feature Category | Technical Detail | Core Operational Benefit |
| Operation Type | Manual Handwheel & Screw-Nut Mechanism | Rotating the hand wheel drives the screw and nut, causing the gate to move horizontally, providing simple, flexible operation and allowing the opening to be adjusted at any time. |
| Speed & Cut-off | Fast Cut-off Capability | Designed for quick cut-off and frequent starting, making it highly efficient in dynamic material handling processes. |
| Media Suitability | Non-Viscous Solids | Excellent for non-viscous solids, powders, and granular materials with diameters less than $10\text{mm}$. |
| Flow Control | Flow Rate Adjustment | Can effectively convey and adjust the flow rate of granular materials. |
| Geometry | Square Port | Ideal for non-circular conduits and discharge points in hoppers, silos, and conveyors. |
| Design Simplicity | Light Weight and Non-Obstruction | Simple structure composed mainly of a frame, gate, and screw mechanism, ensuring non-obstructive material flow. |
| Installation | Angle Versatility | Installation is not limited by angle, offering flexibility in plant layout and design. |
Technical Specifications (Square Port Spiral Gate)
| Parameter | Specification | Notes |
| Actuation | Manual Handwheel | Operated by horizontal movement of the gate via a screw-nut mechanism. |
| Connection Type | Square Port (Typically Flanged) | Designed for top, bottom, import, and export points. |
| Suitable Material Size | Granular materials less than $10\text{mm}$ in diameter | Suitable for all kinds of non-viscous solids and powders. |
| Construction | Frame, Gate, Screw Nut (Spiral Mechanism) |
Target Industry Applications
The Spiral Gate is an ideal flow control and cut-off equipment widely used in the following sectors:
- Building Materials
- Metallurgy
- Mining
- Electric Power
- Chemical Industry
- Glass & Light Industry
- Grain/Food Processing
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