A flap check valve with a bottom drain cover system.
Patent Information
- Authority / Receiving Office
- TR · TR
- Patent Type
- Applications
- Current Assignee / Owner
- KOCAELI UNIVERSITESI
- Filing Date
- 2026-03-18
- Publication Date
- 2026-06-22
Smart Images

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Abstract
Description
1 TARIFF A flap check valve with a bottom drain cover system. TECHNICAL FIELD The invention reduces performance losses in sealing elements due to deformation and wear. Teflon, which eliminates the need for on-site replacement of sealing elements. Featuring a supported leaf-type sealing element and a bottom drain cover system integrated with a smart screw. It relates to flap check valves. The invention specifically addresses wear of sealing elements used in industrial fluid lines, 10 to eliminate efficiency losses caused by maintenance difficulties and system downtime This relates to flap check valves that include a bottom drain flap system developed for this purpose. PREVIOUS TECHNIQUE Check valves prevent backflow in industrial fluid lines and ensure fluid flow in the system. These are critical components widely used to provide one-way flow in one direction. Existing In these systems, these valves operate mechanically depending on pressure, temperature, and fluid properties. It operates under stress. Over time, deformation of the sealing elements, body-cover Effects such as torque losses in connections and decreased elasticity in seals, 20 This causes a decrease in valve performance, especially with high-pressure or chemically aggressive applications. Elastomer-based seals used in these environments wear out quickly and lose their sealing properties. It loses power. In this case, the valve's inability to close completely leads to backflow and significant efficiency loss in the system. This leads to losses. Additionally, gasket replacement or cleaning operations are performed on existing valves. If required, it is usually necessary to remove the entire valve body from the line. This process takes 25 hours at the facility. Because it requires halting production, it disrupts continuity and increases labor and maintenance costs. Loosening of fasteners in traditional designs is a common problem in vibrating environments. Another problem is that loose bolts or nuts leave microscopic marks on sealing surfaces. This leads to leaks, which in turn cause corrosion and material fatigue. Technical deficiencies affect not only mechanical efficiency but also environmental safety. 30 Negative effects. Chemical or pressurized fluid leaks, especially in the energy and petrochemical industries. This creates serious safety risks in the lines. In short, in traditional flap check valves, leakage... Replacing the seals requires disassembling the entire valve body, including any parts connected to it. This This process leads to both a waste of time and operational risks. Furthermore, classic elastomer-based methods... Under high pressure and temperature, the seals deform and quickly lose performance. 35 It leads to loss. 2 In the current state of technology, sealing elements are designed to be more durable. to be manufactured from materials and to develop structural solutions that will facilitate maintenance There have been various attempts in this direction. However, most of these solutions involve a fully integrated valve system. It cannot offer a maintenance mechanism or long-lasting sealing performance. Especially 5 Lack of evacuation and access systems required for on-site maintenance, maintenance This leads to longer lead times and a decrease in operational efficiency. Furthermore... Traditional gasket materials are insufficient in terms of low friction and chemical resistance. This causes deformation during high-frequency opening and closing cycles, shortening the valve's lifespan. In addition, standard screw systems used in bolted connections withstand continuous vibration for 10 minutes. Because they are susceptible to loosening, they lose connection strength over time. This also affects the system. This negatively affects pressure resistance, increasing the risk of leakage. Therefore, in the current technology, a flap valve is used. Check valves have significant limitations in terms of both sealing life and maintenance ergonomics. It is located. In the current state of the art, sealing elements wear out over time and maintenance processes... Due to these difficulties, significant losses in system efficiency can occur. In classical systems... Replacing the gasket requires completely disassembling the valve, which leads to a loss of labor and time. It opens. Additionally, torque losses and deformation problems are frequently observed in bolted connections. This This situation increases security risks and raises operational costs for businesses, especially in the 20s. Leaks in chemical plants pose an environmental hazard. To solve these problems, we need more robust solutions. New systems are needed that provide materials and on-site maintenance capabilities. Patent document US6662779B2 describes the support structure of a butterfly valve stem. An improved system is considered. The invention involves a bearing 25° along the axis of rotation of the valve stem. In a butterfly valve assembly supported by a duct, the actuator is connected to into a valve opening sensor located somewhere between the first end and the other end of the valve stem via an integrated return spring, it will prevent the valve stem from vibrating freely within the bearing. This ensures the continuous application of an elastic force. In this way, it is particularly suitable for vibrating environments. Vibration-induced noises such as "ringing" that occurs in the valve stem under operating conditions 30 Problems are eliminated, and the system is simple even if there is a return spring inside the actuator. It can be held. Patent document US20080035869A1 describes a fluid control valve assembly with a valve stem. via a torsion spring placed between the actuator output shaft, the actuator 35 the output shaft transmits torque to the valve shaft and the shaft is preloaded to the closed position. The descriptions include information about a structure that enables its direction. The invention thus... 3 Even if the electrical signal to the actuator is interrupted or the valve disc is already closed, the actuator output will continue. movement without waiting for unnecessary rotation of the shaft and contact of the valve stem with the sealing surface. By preventing this, it prevents the actuator from overheating and failing prematurely. Patent document US20100236650A1 describes a combined valve assembly; this 5 The system houses both the butterfly valve and the check valve elements under the same housing. It involves the integration of a butterfly wheel within a flow path. While controlling the flow by rotating it, a flapper-type check valve located at the outlet end prevents backflow. It offers a structure that is integrated in a way that will enable it to prevent leakage. This allows for flow control and... Leak prevention functions are integrated into a single valve body without requiring separate installations. They can be combined. Investigations revealed that flap check valves are used in industrial fluid control systems. Current techniques in valves regarding long-term leak-proof sealing and ease of maintenance It appears to have significant limitations. The check valve structures used today are 15 They are mostly equipped with elastomer or rubber-based seals, and these materials have high... deforms over time under pressure, temperature fluctuations and chemical interactions. and loses its sealing performance. Furthermore, these valves require maintenance or When a gasket replacement is necessary, it is usually required to remove the entire valve body from the line. This is mandatory. This situation leads to production line shutdowns, especially in energy, petrochemical and water treatment plants. This leads to production interruptions and high maintenance costs. In some known systems... Spring-supported shaft structures or torsion spring preloaded shafts to increase sealing. Although various mechanisms have been used, these solutions are generally aimed at increasing shaft stability, inadequate in extending the life of sealing surfaces and facilitating on-site maintenance. In addition, in current check valve designs, the vibration of the connecting screws is 25. Loosening underneath leads to micro-leaks in the sealing surfaces and the lid under pressure. This leads to deformations. In some advanced systems, a dual system is integrated into the fuselage. Although functional valves or spring mechanisms are present, these structures require maintenance access. It is limited in this respect and does not allow for controlled release of the fluid inside the valve. Ultimately, the problems mentioned above, which cannot be solved with the current technology, are related to the technical aspects. This has made it necessary to make an innovation in the field. A BRIEF DESCRIPTION OF THE INVENTION The main purpose of the invention is to provide a long-lasting and reliable sealing system for flap check valves. 35 The goal is to eliminate deformation, leakage, and maintenance difficulties in existing valves by developing new ones. 4 This allows valves used in high-pressure or chemically aggressive fluid lines to be used. Service life is extended, system downtime is minimized, and operational efficiency is increased. Another purpose of the invention is to improve elastomer or rubber-based seals used in valve systems. leakage resulting from deformation under high temperature and pressure 5 The aim is to prevent losses. Thanks to the use of Teflon-reinforced sheet-type sealing elements, Form stability of the gasket is achieved by obtaining a low coefficient of friction and high chemical resistance. It is protected and a long-lasting seal is ensured. Another purpose of the invention is to eliminate the need to remove the valve body from the line during maintenance processes. The aim is to enable on-site maintenance by eliminating the need for a bottom drain cover. Thanks to this system, the fluid inside the valve can be drained in a controlled manner, thus enabling cleaning. Gasket replacement or inspection procedures can be performed safely without disconnecting the valve from the line. Another aim of the invention is to ensure the connection 15 under system vibration and pressure fluctuations. The aim is to prevent loosening or torque loss in the components. Smart screw integrated connection. Its structure, with its self-locking feature, prevents loosening, ensuring the integrity of the lid connection. It protects and provides long-term mechanical stability. Another aim of the invention is to reduce the risk of environmental leakage during maintenance and repair, thereby benefiting user 20 The aim is to increase safety and environmental protection. The discharge hatch structure allows for controlled liquid discharge. It creates safe working conditions, especially in chemical or high-pressure lines, and is environmentally friendly. It prevents harmful fluids from leaking out. Another aim of the invention is to accommodate different valve sizes and pressures thanks to its modular and adaptive design. A universal seal that can be easily integrated into various classes and industrial applications. The aim is to provide a maintenance system. This feature facilitates production and maintenance standardization, thereby both It offers advantages in terms of both cost and operational efficiency. Another aim of the invention is to reduce operating costs by 30 by extending maintenance intervals in valve systems. The aim is to reduce the mechanical and mechanical aspects of the system. The Teflon-backed leaf seal and intelligent screw mechanism... Minimizing chemical corrosion ensures long-term trouble-free operation and low maintenance requirements. presents. Another aim of the invention is to improve ease of maintenance in industrial fluid control technologies. 35 The goal is to set a new standard in terms of leak-proof service life and safety. This will allow us to surpass existing standards. By developing a more durable, environmentally friendly and user-oriented system compared to existing valve designs. A significant step forward is achieved towards the future of valve technologies. All the purposes mentioned above and those that will emerge from the detailed explanation below. The present invention aims to achieve a long-lasting seal in flap check valves, 5 Teflon-reinforced leaf-type seals offer ease of maintenance and increase system reliability. The component features an integrated smart screw connection structure and a substructure that enables on-site maintenance. The invention relates to a valve system including a drain cover system. The invention concerns a sealing system. Eliminates performance losses caused by deformation and wear of its components, It is a flap check valve that allows for the on-site replacement of sealing elements, 10 feature; • Forming part of the main line through which the fluid passes and comprising the entire structural component of the valve mechanism. a valve body containing its elements, • By closing the top of the valve body, the internal components are protected from external influences and pressure. a top cover that protects against changes, 15 • Thanks to its low friction coefficient, it provides the possibility of long-term use and frequent opening. chemical-resistant, maintaining high sealing performance even during closing cycles. durable Teflon sheet, • During maintenance, the fluid remaining inside the valve must be removed safely and in a controlled manner. a bottom drain hatch that allows it to be emptied and 20 Integrated into the lower drain cover, preventing connection loosening under vibrating operating conditions. a smart screw that prevents and has a self-locking feature It includes. The advantages of the current invention, along with its structure and additional elements, can be best utilized in 25 years. For it to be understood, it must be considered together with the figures explained below. BRIEF DESCRIPTION OF THE FIGURES Figure 1: General perspective view of a flap check valve. Figure 2: Side and cross-sectional views of a flap check valve. 30 REFERENCE NUMBERS 1. Disk 2. Sealing surface 3. Bottom drain cover 35 4. Teflon sheet 6 5. Smart screw 6. Body 7. Top cover 8. Nut 9. Stud 5 DETAILED DESCRIPTION OF THE INVENTION This detailed explanation focuses solely on the innovation in the invention to provide a better understanding of the subject matter. This is conveyed without being limited to examples. Accordingly, in the following explanations and figures, Long-lasting sealing and on-site maintenance systems for flap check valves are explained. 10 The subject of this invention, a flap check valve, shown in Figure 1, allows for unidirectional flow of fluid. It is used to provide and prevent backflow, and consists of a disc (1), a sealing surface (2), a body (6), bottom drain cover (3), Teflon sheet (4), smart screws (5), top cover (7), nut (8) and It consists of a stud (9). 15 The invented flap check valve eliminates the maintenance difficulties encountered in current technology. Smart screw developed to remove and achieve long-lasting sealing performance. (5) presents the integrated bottom drain cover (3) configuration. With the invention, the valve without the need to completely remove the body (6), the bottom drain cover (3) 20 Necessary interventions can be easily carried out via this method. Thus, maintenance times are significantly reduced. This shortens the time it takes for the facility to downtime, reduces downtime, and increases operational efficiency. The subject of the invention includes a Teflon foil (4) type gasket as mentioned. This special gasket has a low Thanks to its friction coefficient, it provides the possibility of long-term use and frequent opening and closing. 25 It maintains high sealing performance even during chemical cycles. Teflon's chemical properties... Thanks to its durability, the seal life is extended even in industrial lines containing aggressive fluids. It is getting longer, and the frequency of maintenance is being minimized. Another important feature of the invention is the smart screw (5) mechanism. This specially designed 30 The screws have a self-locking feature and can withstand accidents that may occur during operation. This eliminates the possibility of loosening due to vibration, pressure changes, or mechanical stress. This ensures that the lid connections always remain secure and also provides extra protection during maintenance. No fastening elements are needed. The use of smart screws (5) is maintenance It reduces the workload of its personnel while simultaneously increasing the level of security. 35 7 The bottom drain cover (3) allows the liquid inside the valve to be drained safely and in a controlled manner. This ensures that during maintenance, any remaining inside the valve can be removed thanks to the aforementioned lower drain cover (3). The fluid is easily drained, preventing potential overflows or leaks that could harm the environment. In addition, the ergonomic design of the lower drain cover (3) makes it practical for maintenance personnel. It enables transactions to be processed quickly. 5 The intelligent screw-integrated bottom drain cover structure is not limited to flap check valves only, but can be used with different types. It also offers easy integration possibilities in various valve types and industrial lines. Modular Its structure allows it to be adapted to different sizes and pressure classes, thus enabling a wide range of uses. A wide range of applications is obtained. From chemical plants to power plants, from the petrochemical industry to 10 It is applicable in many areas, including water treatment plants. As a result, this invention makes maintenance and repair processes in valve systems much easier. It can be carried out safely, economically and quickly; and it is also long-lasting. Sealing performance is ensured. By removing the lower cover of the valve flap, 15 Cleaning or maintenance work inside the valve has become quite practical, which is both... It offers a high level of operational efficiency to both the user and the facility operator.
Claims
8 REQUESTS 1. Eliminates performance losses caused by deformation and wear of sealing elements. a flap-type check that lifts and allows for the on-site replacement of sealing elements. It is a valve, and its characteristic is; • Forming a part of the main line through which the fluid passes and comprising the entire structural component of the valve mechanism. 5 a valve body containing its elements (6), • By closing the upper part of the mentioned valve body (1), the internal components are protected from external influences and pressure a top cover that protects against changes (7), • Thanks to its low friction coefficient, it provides the possibility of long-term use and frequent opening. Chemical 10 that maintains high sealing performance even during closing cycles. Teflon sheet with durability (4), • During maintenance, the fluid remaining inside the valve must be removed safely and in a controlled manner. a bottom drain cover (3) that allows it to be emptied and Integrated into the lower drain cover, preventing connection loosening under vibrating operating conditions. a smart screw (5) 15 that prevents self-locking It includes.