The Basic Structure And Working Principle Of Forged Steel Gate Valve

Forged steel gate valve is a shut-off device commonly used in fluid pipelines such as water, steam, and gas. Its main features are simple structure and reliable sealing performance, fast opening and closing, and low mechanical resistance. The following is the basic structure and working principle of forged steel gate valve:

1. Basic structure of forged steel gate valve

Forged steel gate valve is mainly composed of valve body, valve cover, valve plate (gate plate), valve stem, packing and operating mechanism.

1. Valve body and valve cover: The valve body and valve cover are the main components of the gate valve, usually made of forged steel, and its internal shape is a flow channel, which is used to guide the flow of fluid.

2. Valve plate: The valve plate is a key component for controlling the opening and closing of the fluid, and is usually made of forged steel. There are sealing surfaces made of carbide on the upper and lower edges, which are used to cooperate with the valve seat to achieve sealing.

3. Valve stem: The valve stem is responsible for guiding the valve plate to rise and fall, and is usually made of forged steel. Its bottom is usually connected to the valve plate and sealed by the packing on the valve cover.

4. Packing: The main purpose of packing is to seal the gap between the valve stem and the valve cover. It is usually made of PTFE or other high temperature and corrosion resistant materials.

5. Operating mechanism: The operating mechanism includes handwheel, motor, pneumatic motor, etc., which is mainly responsible for controlling the opening and closing operation of the valve plate.

2. Working principle of forged steel gate valve

Forged Steel Gate Valve by rotating the valve stem, the valve plate is lifted and lowered along the center line of the valve body, thereby realizing the opening and closing control of the fluid. There are two main opening and closing methods:

1. Manual operation: By rotating the handwheel or other operating methods, the valve stem is driven to rotate and the valve plate is lifted and lowered. Manual operation is suitable for some small equipment or equipment that needs to test fluid.

2. Automatic operation: The opening and closing of automatic control is realized by a motor or pneumatic motor. It has the characteristics of high precision and convenient control. It is suitable for some large or continuously running production environments.

During the working process, when the fluid channel needs to be opened, the operating mechanism is rotated to lift the valve stem upward, and the valve plate leaves the valve seat to form a channel, and the fluid can flow. When the fluid channel needs to be closed, the operating mechanism is rotated, and the valve plate will be pressed down on the valve seat to cut off the fluid in the pipeline, thereby closing the pipeline.

In short, the forged steel gate valve has the characteristics of simple structure, convenient assembly and maintenance, and good sealing performance. It is suitable for some production environments with high requirements for fluid cutoff and regulation.