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What is the structural principle of welding manual butterfly valves?
Date: 2024-09-19Read: 6
Sanitary manual butterfly valve is a valve equipment widely used in the industrial field. It has the characteristics of simple structure, easy operation, and good sealing, and is widely used in the control and regulation of liquid, gas and other media.
The sanitary manual butterfly valve consists of a valve body, valve disc, bearing, sealing ring, operating rod, etc. The valve body is a butterfly shaped structure, with hollow internal channels connected to the interface pipeline; The valve disc is a semi-circular or rectangular structure that can rotate around an axis to control the medium; Bearings are responsible for supporting the valve disc, enabling it to rotate smoothly; The sealing ring is made of highly elastic material, which can achieve good sealing effect; The operating lever is connected to the valve disc to control the medium.
Sanitary manual butterfly valves achieve control and regulation of the medium by rotating the valve disc. In the closed state of the valve, the valve disc is attached to the valve seat, forming a good sealing state; When the valve is opened, the gap between the valve disc and the valve seat increases, and the medium flows through the hollow channel to achieve the purpose of control and regulation.
In the specific operation process, the operating rod is connected to the valve disc to achieve rotation of the valve disc. Due to the support of the bearings, the valve disc remains stable during rotation, ensuring the stability and continuity of the medium flow. When the operating lever rotates to the valve closed position, the valve disc is in contact with the valve seat, forming a good sealing state; When the operating lever rotates to the valve open position, the gap between the valve disc and the valve seat increases, and the medium flows through the hollow channel to achieve the purpose of control and regulation.
In addition, the sealing performance and adjustment accuracy of sanitary manual butterfly valves are also related to the materials used for the sealing ring and valve seat. The commonly used materials in the field of hygiene include PTEE, high-quality non-metallic sealing materials, etc. These materials have characteristics such as corrosion resistance and wear resistance, which can effectively improve the performance indicators of sanitary manual butterfly valves.
