The Bevel Gear Knife Gate Valve is a valve specifically designed for handling complex media containing solid particles, sludge, and similar substances. It is highly regarded in industrial applications for its reliability and efficiency.

1. Structural Characteristics of Bevel Gear Knife Gate Valve

The structural design of the bevel gear knife gate valve prioritizes durability and reliability, and is mainly composed of the following components:

(1) Valve Body: Typically made from high-strength materials such as cast iron, stainless steel, or other corrosion-resistant alloys to meet the demands of various working conditions. The internal flow path of the valve body is designed to be straight, reducing flow resistance as the medium passes through, which helps to increase flow rate and minimize wear.

(2) Knife Gate: The knife gate is the core component of the valve, featuring sharp cutting edges that can effectively cut through and isolate media containing solid particles. The knife gate is typically made from wear-resistant materials to ensure long-term use under high-wear conditions.

(3) Bevel Gear Mechanism: This is a key feature that distinguishes the Bevel Gear Knife Gate Valve from other knife gate valves. The bevel gear mechanism converts rotational motion into linear motion through a set of bevel gears, driving the knife gate to move up and down. This design makes the valve easier to operate, especially in large diameter and high-pressure conditions, significantly reducing the difficulty of operation.

(4) Sealing Assembly: The sealing performance of the valve directly affects its reliability and service life. The Bevel Gear Knife Gate Valve typically uses elastic materials or metal seals, with the sealing ring fitting tightly with the knife gate to ensure that there is no leakage of the medium when the valve is in the closed position.

(5) Stem and Handwheel: The stem is connected to the bevel gear mechanism, and the rotation of the handwheel controls the movement of the bevel gears, thereby controlling the opening and closing of the knife gate. The stem is typically made of anti-corrosive materials and is equipped with a protective sleeve to extend its service life.

2. Working Principle of Bevel Gear Knife Gate Valve

The working principle of the Bevel Gear Knife Gate Valve is relatively simple, but its design takes into account the application requirements under various complex operating conditions, ensuring the efficient operation of the valve.

(1) Valve Opening: When the valve needs to be opened, the operator rotates the handwheel to drive the bevel gear mechanism. The bevel gear converts the rotational motion of the handwheel into the linear motion of the valve stem, pushing the knife gate upwards. As the knife gate rises, the internal flow path of the valve gradually opens, allowing the medium to pass through smoothly.

(2) Valve Closing: When closing the valve, the handwheel is rotated in the opposite direction, and the bevel gear mechanism drives the knife gate downward. The sharp edge of the knife gate cuts off the flowing medium until the flow path is completely closed. At this point, the knife gate comes into tight contact with the sealing ring, forming a reliable seal to ensure that there is no leakage of the medium.

The bevel gear mechanism uses the principle of reduction to amplify the small torque applied by the handwheel, significantly reducing the force required to operate large-diameter and high-pressure valves. This design not only enhances operational convenience but also reduces the physical effort needed by the operator.

3. Application Scenarios of Bevel Gear Knife Gate Valve

Due to the unique structure of the Bevel Gear Knife Gate Valve, it is widely used in the following fields:

(1) Wastewater Treatment: In wastewater treatment, where large amounts of suspended solids and particles are present, the valve requires strong cutting ability and high wear resistance.

(2) Solid Material Conveyance: In applications requiring the handling of mediums with high concentrations of solid particles, such as slurry and sand slurry, the Bevel Gear Knife Gate Valve effectively prevents blockages thanks to its knife gate structure.

(3) Pulp and Fiber Industry: The Bevel Gear Knife Gate Valve is effective in cutting and blocking fibrous materials during the conveyance of pulp and fibers, preventing system blockages.