I.Basic Structure
The structure of butterfly valve is mainly composed of several core parts. The valve body as the infrastructure of the butterfly valve, its shape is mostly round or oval, and the material selection is extremely sophisticated, such as corrosion-resistant cast iron,
high-strength cast steel and stainless steel resistant to special media. The valve body not only provides stable support for the butterfly valve, but also builds a fluid flow channel, the selection of different materials is designed to fit the complex and diverse industrial production environment, whether it is conventional water, gas transmission, or corrosive chemical fluid transmission, can cope with freely. The butterfly plate is the core component of the butterfly valve, which is like a rotating disk placed inside the valve body, and the size is precisely adapted to the valve diameter. During operation, the disc rotates flexibly around a specific fixed shaft, and the fine gap between the edge and the inner wall of the valve body not only ensures the smooth rotation of the disc, but also maintains the compactness of the overall structure of the valve.
II.Working Principle
The working principle of the butterfly valve is based on the rotating motion of the butterfly plate around the axis of the valve stem. When the butterfly valve needs to be opened, the drive device receives the opening instruction, generates the corresponding torque and transmits it to the butterfly plate through the valve stem, and the butterfly plate begins to rotate counterclockwise around the axis. As the disc rotates, the seal between it and the seat is gradually separated, and the fluid channel is gradually opened to allow fluid to pass through the valve. When the disc is rotated to the 90° position, the valve is fully open, and the fluid flows almost unhindered in the pipe, and the flow rate is maximum. When the butterfly valve is closed, the driving device outputs torque in reverse according to the closing instruction, and the valve stem drives the butterfly plate to rotate clockwise. As the plate moves closer to the seat, the fluid passage Narrows. When the disc is turned back to the initial 0° position, the disc is tightly fitted with the sealing surface of the valve seat, completely blocking the fluid flow and closing the valve. During the whole opening and closing process, the precise adjustment of the fluid flow can be achieved by precisely controlling the rotation Angle of the butterfly plate.
The sealing design of the butterfly valve is unique, and the valve seat is closely fitted with the butterfly plate to form a tight sealing structure. When the valve is closed, it can effectively resist the impact of high pressure fluid and prevent medium leakage. Even in the face of corrosive media, special sealing materials can ensure long-term stable sealing effect, provide a safe and reliable guarantee for industrial production, and avoid production accidents and environmental pollution caused by leakage.
The butterfly valve uses a compact structure design, compared with other types of valves, small size, light weight. This feature makes it unnecessary to use large lifting equipment during the installation process, saving labor and time costs. At the same time, in the pipeline system with limited space, the butterfly valve can be flexibly installed and will not occupy too much space, which provides convenience for pipeline layout optimization.
The butterfly valve is designed so that the disc rotates with minimal operating torque during opening and closing. When manually operated, the operator only needs to easily turn the handle to realize the opening and closing action of the valve, which greatly reduces the labor intensity. If electric, pneumatic or hydraulic drive is used, the power required for the drive device is also reduced, which improves the ease of operation and reduces energy consumption.
J-VALVES Butterfly valves have an advanced streamlined design and an optimized body structure that minimizes fluid resistance through the flow. This design not only improves the efficiency of fluid transmission, but also significantly reduces energy consumption and saves operating costs for enterprises.
J-VALVES Butterfly valves use high quality sealing materials combined with advanced sealing technology to ensure zero leakage under all operating conditions. Whether it is high pressure, high temperature or corrosive media, it can maintain excellent sealing effect, effectively prevent media leakage.
J-VALVES Butterfly valves offer a variety of actuation methods, including manual, electric, pneumatic, etc., to meet the needs of different users in terms of ease of operation and degree of automation. Electric and pneumatic butterfly valves can be easily controlled remotely and seamlessly interconnect with automation systems to improve production efficiency and intelligence.
The three-eccentric structure optimizes the movement of the butterfly plate, which greatly reduces the operating torque of the valve. Manual drive is easy and labor-saving, electric, pneumatic, hydraulic drive, drive device power demand is reduced, not only improve the convenience of operation, but also reduce energy consumption and cost. In the need to quickly control the flow of the scene, such as emergency cut-off system, butterfly valve can respond quickly, the butterfly plate quickly in place, to meet the high reaction speed of the industrial process requirements.
Its unique telescopic structure can effectively deal with the displacement of the pipeline due to temperature change, foundation settlement and other factors. When the pipeline is expanded by heat or contracted by cold, the telescopic butterfly valve can be adjusted by its own expansion to absorb these dispositions and prevent the pipeline from being damaged due to stress concentration.
The durability and reliability of the double eccentric butterfly valve are also very prominent. The double eccentric design reduces the relative sliding between the sealing surfaces during the movement of the butterfly plate, significantly reduces the degree of wear, and the operation of the butterfly plate and the seat is not easy to stick, so as to avoid abnormal friction damage to the parts.
The midline lug butterfly valve adopts an advanced midline sealing structure, and the butterfly plate fits tightly with the valve seat, which can achieve two-way sealing and ensure zero leakage of fluid control. This design not only improves the sealing performance, but also effectively extends the service life of the butterfly valve.
The structure of the center line flange butterfly valve is relatively simple, mainly composed of the valve body, the butterfly plate, the valve stem and the sealing device. This simple structure makes the valve small in size, light in weight and easy to install, disassemble and transport. In some space limited occasions, such as ships, offshore platforms, etc., the compact structure of the center line flange butterfly valve is more advantageous.
Convenient installation and maintenance is also a prominent feature of the telescopic butterfly valve. Its structure design is compact and reasonable, compared with some complex valves, there is no need for too much complex operation and large installation equipment in the installation process, which can effectively save installation time and labor costs. Moreover, in daily maintenance, because of its simple and clear structure, easy to check and repair, maintenance personnel can quickly locate and solve problems, reduce maintenance difficulty and cost, improve the maintainability of equipment, and extend the service life of the valve.
In addition, the telescopic butterfly valve has obvious advantages in flow regulation. By precisely controlling the rotation Angle of the butterfly plate, the fluid flow in the pipeline can be finely adjusted. In different industrial production links, according to the process needs, it can be flexibly adjusted within a large flow range, whether it is the precise control of small flow, or the moderate adjustment of large flow, it can meet the production requirements, ensure the stability of the production process and the consistency of product quality, and help enterprises to improve production efficiency and product quality.
In the field of industrial fluid control, midline lug butterfly valves are gradually becoming the preferred solution for many enterprises due to their excellent performance and wide range of application scenarios. Whether it is the chemical, petroleum, pharmaceutical or environmental protection industries, mid-line lug butterfly valves can provide reliable protection for your production process with their unique design and efficient functions.
The midline lug butterfly valve is suitable for a variety of fluid media, including water, steam, oil, corrosive media, etc., and is widely used in chemical, petroleum, pharmaceutical, food processing, environmental protection and other industries. Whether it is a high temperature and high pressure environment, or working conditions with extremely high sealing requirements, the midline lug butterfly valve can operate stably to ensure the safety and efficiency of the production process
The unique centerline structure gives the butterfly valve excellent operating performance. During opening and closing, the disc rotates smoothly around the center line and the operating torque is significantly reduced. Manual operation, the worker can easily turn the handle to complete the valve action, greatly reducing labor intensity; If the electric and pneumatic drive is used, the energy consumption of the drive device is greatly reduced, and the energy-saving effect is remarkable. Moreover, the structure makes the butterfly valve compact as a whole, occupies a small space, and is flexible and convenient to install in the layout of industrial pipelines with limited space, providing more possibilities for the optimal design of pipeline systems.
The basic structure of the butterfly valve includes the valve body, the butterfly plate, the stem, the seat and the sealing ring and other key components. The valve body, as the main frame, is made of high-quality materials to ensure the strength and corrosion resistance of the valve. The butterfly plate is the core part of the butterfly valve, which rotates in the valve body through the rotation of the valve stem to realize the on-off of the fluid and the flow regulation. The seat fits closely with the disc to form a sealing pair, ensuring that the valve can effectively prevent fluid leakage when closed.
The structure of the butterfly valve is relatively simple, and the number of internal parts is small, which makes its maintenance work easy and convenient. In daily maintenance, it is only necessary to regularly check the wear of the seals, the operating status of the drive device and the integrity of the butterfly plate, and if necessary, it can be quickly replaced or repaired.
By precisely controlling the rotation Angle of the butterfly plate, the fluid flow can be fine-adjusted, from a small flow to a large flow range, can be stable and accurate control. Whether it is in the chemical industry, petroleum and other industries with high requirements for flow control accuracy, or in the water supply and drainage system and other scenarios that need to flexibly adjust the flow according to actual needs, butterfly valves can rely on excellent adjustment performance.
J-VALVES Butterfly valves use advanced sealing technology combined with high-quality sealing materials to ensure zero leakage under all operating conditions. Whether it is a soft seal butterfly valve or a metal hard seal butterfly valve, it can maintain excellent sealing effect in complex environments such as high pressure, high temperature and corrosive media.