The bevel gear stainless steel gate valve, constructed from stainless steel and featuring a bevel gear drive design, boasts low fluid resistance and strong resistance to media erosion on the sealing surface. Its opening and closing process is effortless, and the media flow direction is unrestricted, maintaining stable fluid pressure. The overall structure is simple and compact, with excellent manufacturability, making it suitable for fluid control needs in various industrial scenarios.
Core Structure and Working Principle
Transmission Method
A bevel gear (spiral bevel gear) transmission mechanism is used. Rotating the bevel gear via a handwheel or drive device drives the valve stem to rise and fall vertically, thus controlling the opening and closing of the gate. This design converts horizontal rotational motion into vertical linear motion, making operation easier and suitable for space-constrained environments.
Gate Design
Vertical Movement: The gate moves vertically along the fluid channel, changing the channel cross-sectional area to control flow rate.
Sealing Method: A gapless opening and closing design is used between the gate and the valve seat, supporting bidirectional sealing to prevent media leakage. Some models use integral rubber sealing or hard alloy welding technology to enhance wear resistance and corrosion resistance.
Valve Body Structure
Flat-bottom Valve Body: The bottom is flush with the pipeline, preventing debris accumulation and suitable for media containing solid particles such as sewage and slurry.
Resilient Gate: Some models use a resilient gate structure, which compensates for sealing surface wear through its own deformation, extending service life.
Technical Parameters and Performance Indicators
Nominal Diameter: DN50-DN1200 (some models support larger diameters).
Nominal Pressure: 1.0MPa-32.0MPa (some high-pressure models can reach over 40MPa).
Applicable Temperature:
Standard Models: -20℃~80℃ (soft seal).
High-Temperature Models: ≤593℃ (hard seal, such as hard alloy welded sealing surface).
Core Advantages
Effortless Operation: The bevel gear transmission mechanism amplifies torque, reducing opening and closing torque, supporting single-person operation.
Reliable Sealing: The bidirectional sealing design combined with hard alloy or rubber sealing rings adapts to high pressure, high temperature, and corrosive media.
Wide Media Adaptability:
Suitable for clean media such as water, steam, gas, and petroleum products.
Through special designs (such as knife-shaped gates and hard seals), it can handle heavy wastewater, pulp, and slurry containing particles and fibers.
Compact Structure: Flange connection or wafer-type structure, requiring minimal installation space and facilitating maintenance.
Application Scenarios
Municipal and Water Conservancy Projects: Water supply and drainage networks, sewage treatment plants, irrigation systems.
Industrial Sector:
Petrochemical Industry: Pipeline media cutoff and flow control.
Power Industry: Boiler feedwater and steam pipelines.
Mining and Metallurgy: Slurry and slag conveying pipelines.
Paper and Food Industry: Pulp and silo outlet control.