Small-opening scouring-resistant hard sealing ball valve

Abstract

The utility model relates to the technical field of sealing ball valves, and discloses a small-opening scouring-resistant hard sealing ball valve which comprises a valve body, a connecting column, a nut, a wrench, a triangular plate, a limiting column, a sealing connector, a lower valve rod, a lower bearing, a valve seat, a sealing ring and a second spring. Connecting columns are arranged on the four right-angle sides of the valve body in the same direction, the ball body is a core component for controlling fluid circulation, and passing or blocking of fluid is adjusted through a through hole in the ball body. According to the small-opening-degree scouring-resistant hard sealing ball valve, operation is allowed in a partial opening state through design, the scouring effect of solid particles in fluid on the interior of the valve is greatly reduced through the small-opening-degree characteristic, and therefore the service life of the valve is effectively prolonged, and the small-opening-degree scouring-resistant hard sealing ball valve is particularly important when the fluid flowing at a high speed or with the high solid content is treated; the small-opening operation also allows finer flow control, provides more adjustment flexibility, and meets specific process requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of sealed ball valves, in particular to a small-opening erosion-resistant hard-sealed ball valve. Background Art

[0002] The ball valve is a widely used valve type with the characteristics of simple structure, good sealing and easy operation. It is mainly composed of a ball, a valve seat, a valve body, a valve stem and a drive device. The opening and closing of the fluid is achieved by rotating the through hole on the ball. Due to its ability to open and close quickly, low fluid resistance and excellent sealing performance, the ball valve is widely used in many industries such as petroleum, natural gas, chemical industry, papermaking, urban construction, etc., especially suitable for medium and low pressure environments.

[0003] Traditional ball valves have some shortcomings in some specific applications. When handling media containing solid particles or high-speed flow, the ball and valve seat of traditional ball valves are susceptible to erosion and rapid wear, which will reduce the sealing performance and service life of the valve. In addition, when traditional ball valves are operated at a small opening, their flow control accuracy and repeatability usually cannot meet strict industrial standards, especially in situations where fine adjustment of fluid dynamics is required. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The utility model aims to provide a small-opening erosion-resistant hard-sealed ball valve to solve the problem in the background art that the traditional ball valve is susceptible to erosion and rapid wear during long-term use.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small-opening erosion-resistant hard-sealed ball valve, which includes a valve body, a connecting column, a nut, a wrench, a triangular plate, a limiting column, a sealing joint, a sphere, a through hole, an inflow channel, an outflow channel, an upper valve stem, an upper bearing, a first spring, a limiting end, a lower valve stem, a lower bearing, a valve seat, a sealing ring and a second spring, connecting columns are arranged on four right-angled sides in the same direction of the valve body, a wrench is arranged on the upper end of the valve body, a nut is arranged on the upper end of the wrench, a triangular plate is arranged on the left end of the wrench, a limiting column is arranged on the upper end of the connecting column, and sealing Sealing joint, a ball is arranged inside the valve body, and a through hole is arranged in the horizontal direction of the ball. The valve body provides the main structure and shell for the entire ball valve to ensure the protection of internal components and the guidance of the fluid. The connecting column is used to fix and support other mechanical parts to increase the overall stability of the structure. The nut fixes the wrench, and the wrench is used to manually operate the valve switch. The triangular plate increases the leverage effect when the wrench is operated to facilitate the switching of the valve. The limit column limits the moving range of the wrench to prevent damage to the equipment due to excessive operation. The sealing joint ensures the sealing of the valve connection to prevent fluid leakage. The ball is the core component for controlling the flow of fluid, and the passage or cutoff of the fluid is adjusted through the through hole inside it.

[0008] Preferably, an inflow channel is provided at the left end of the valve body, and an outflow channel is provided at the right end of the valve body. The inflow channel and the outflow channel are aligned to realize the passage of fluid, and the inflow channel and the outflow channel serve as channels for the fluid to enter and leave the ball valve respectively.

[0009] Preferably, an upper valve stem is provided at the upper end of the sphere, and an upper bearing is provided on the upper valve stem. The upper valve stem connects the sphere and the operating mechanism to ensure the stability of the sphere during rotation. The upper bearing reduces friction during operation of the upper valve stem to ensure smooth operation.

[0010] Preferably, a first spring is provided between the valve body and the wrench, and a limit end is provided at the lower end of the wrench. The first spring is located between the wrench and the valve body, providing a force for the wrench to return to its initial position, thereby helping to restore the ball valve to a closed state. The limit end is provided at the end of the wrench and is used in conjunction with the limit column to control the maximum moving distance of the wrench.

[0011] Preferably, a lower valve stem is provided at the lower end of the sphere, and a lower bearing is provided on the lower valve stem. The lower valve stem is also connected to the sphere and transmits operating force downward. The lower bearing is the same as the upper bearing, which reduces the friction of the valve stem and ensures smooth operation.

[0012] Preferably, a valve seat is arranged around the sphere and forms a sealing contact with the sphere. The valve seat is arranged around the sphere and fits tightly with the sphere to form an effective fluid seal.

[0013] Preferably, a sealing ring is provided on the inner side of the valve seat, and a second spring is provided between the valve seat and the inside of the valve body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The design of this small opening erosion-resistant hard-sealed ball valve allows operation in a partially open state. This small opening feature greatly reduces the erosion effect of solid particles in the fluid on the inside of the valve, thereby effectively extending the service life of the valve. This is especially important when dealing with high-speed flow or high-solid content fluids. In addition, small opening operation also allows more precise flow control and provides more adjustment flexibility to meet specific process requirements;

[0016] 2. The small opening erosion-resistant hard-sealed ball valve is made of highly wear-resistant materials, such as hardened metal or special alloys. These materials have extremely high corrosion and wear resistance while maintaining excellent sealing effects. Such hard sealing design not only ensures the long-term performance of the ball valve under harsh working conditions, but also ensures the stable operation of the valve in various chemical environments, reduces maintenance requirements and replacement frequency, and improves the economic benefits of the overall system;

[0017] 3. The precision engineering design and optimized flow path structure of this small opening erosion-resistant hard-sealed ball valve reduce friction and wear during operation and enhance the overall performance of the valve. The sealing ring and double spring structure ensure good sealing even under frequent operation or large pressure changes. This design not only improves the safety of operation, but also ensures the reliability of the system. Especially in critical applications such as chemical processing or energy production, the reliability of the valve is particularly important. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the sealing ball valve of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the sealing ball valve of the utility model;

[0020] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0021] Figure 4 This is a schematic diagram of the spherical structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the wrench of the utility model.

[0023] In the figure: 1. valve body; 2. connecting column; 3. nut; 4. wrench; 5. triangle plate; 6. limit column; 7. sealing joint; 8. ball; 9. through hole; 10. inflow channel; 11. outflow channel; 12. upper valve stem; 13. upper bearing; 14. first spring; 15. limit end; 16. lower valve stem; 17. lower bearing; 18. valve seat; 19. sealing ring; 20. second spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 5 The utility model provides a technical solution: a small-opening erosion-resistant hard-sealed ball valve, which includes a valve body 1, a connecting column 2, a nut 3, a wrench 4, a triangular plate 5, a limiting column 6, a sealing joint 7, a ball 8, a through hole 9, an inflow channel 10, an outflow channel 11, an upper valve stem 12, an upper bearing 13, a first spring 14, a limiting end 15, a lower valve stem 16, a lower bearing 17, a valve seat 18, a sealing ring 19 and a second spring 20. The four right-angled sides of the valve body 1 in the same direction are provided with connecting columns 2, the upper end of the valve body 1 is provided with a wrench 4, the upper end of the wrench 4 is provided with a nut 3, the left end of the wrench 4 is provided with a triangular plate 5, the upper end of the connecting column 2 is provided with a limiting column 6, and the valve body 1 Sealing joints 7 are provided at the front and rear ends. The valve body 1 provides the main structure and outer shell of the entire ball valve, protects the internal components from the influence of the external environment, and ensures the correct flow direction of the fluid. The connecting column 2 is used to enhance the structural stability of the valve body, and at the same time serves as a supporting structure for additional components such as the limit column 6. The nut 3 is used to fix the wrench 4 so that the operator can adjust the opening and closing state of the valve. The wrench 4 is a tool for manually operating the ball valve, and the rotation of the ball 8 is achieved by acting on the nut 3. The triangular plate 5 enhances the leverage effect of the wrench 4, making it easier for the user to operate the valve. The limit column 6 limits the range of motion of the wrench 4 to prevent excessive rotation from damaging the ball valve. The sealing joint 7 ensures that the valve connection does not leak, thereby providing protection for the reliability of the system.

[0026] A sphere 8 is arranged inside the valve body 1, and a through hole 9 is arranged in the horizontal direction of the sphere 8. An inflow channel 10 is arranged at the left end of the valve body 1, and an outflow channel 11 is arranged at the right end of the valve body 1. An upper valve stem 12 is arranged at the upper end of the sphere 8, and an upper bearing 13 is arranged on the upper valve stem 12. The sphere 8 is the core component of the ball valve, and the on-off of the fluid is controlled by the through hole 9 inside it. The through hole 9 allows or prevents the fluid from passing through the sphere 8 to realize the fluid control function. The inflow channel 10 and the outflow channel 11 are the inlet and outlet of the ball valve, which control the entry and exit of the fluid. The upper valve stem 12 and the lower valve stem 16 are connected to the sphere 8 so that they can rotate to adjust the position of the through hole 9.

[0027] A first spring 14 is arranged between the valve body 1 and the wrench 4, a limit end 15 is arranged at the lower end of the wrench 4, a lower valve stem 16 is arranged at the lower end of the ball 8, a lower bearing 17 is arranged on the lower valve stem 16, a valve seat 18 is arranged around the ball 8 and forms a sealing contact with the ball 8, a sealing ring 19 is arranged on the inner side of the valve seat 18, a second spring 20 is arranged between the valve seat 18 and the inside of the valve body 1, the limit end 15 is used in conjunction with the limit column 6 to determine the maximum rotation angle of the wrench 4 to avoid excessive operation, the valve seat 18 tightly surrounds the ball 8 and forms a sealing contact with it to prevent fluid leakage, and the sealing ring 19 is installed on the inner side of the valve seat 18 to enhance the sealing performance and protect the ball valve from medium erosion.

[0028] Working principle: When using a small-opening erosion-resistant hard-sealed ball valve, the position of the ball 8 can be adjusted by accurately controlling the rotation of the wrench 4 to ensure that its through hole 9 is aligned or misaligned with the inflow channel 10 and the outflow channel 11. This alignment determines whether the valve is in an open or closed state. When the through hole 9 is aligned with the inflow channel 10 and the outflow channel 11, the fluid can flow freely and the valve is in a fully open state. When the through hole 9 is not aligned with the inflow channel 10 and the outflow channel 11, the fluid is cut off and the valve is closed. During operation, the user can adjust the angle of the ball 8 by rotating the wrench 4. This rotation is limited by the limit column 6 on the connecting column 2 to prevent excessive The upper valve stem 12 and the lower valve stem 16 help maintain the stable rotation of the ball through the upper bearing 13 and the lower bearing 17 to ensure smooth and precise operation. Small opening operation is particularly suitable for application scenarios that require fine adjustment of flow or pressure, especially when dealing with fluids containing solid particles. The small opening can reduce the scouring effect of particles on the inside of the valve, thereby extending the service life of the valve. The hard seal design uses wear-resistant materials and sealing rings 19 to ensure good sealing even under frequent or harsh conditions of use. The first spring 14 and the second spring 20 provide necessary force support in mechanical operation to ensure the recovery and durability of the sealing contact.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A small-opening erosion-resistant hard-sealed ball valve, comprising a valve body (1), a connecting column (2) and a nut (3), characterized in that: Connecting columns (2) are arranged on four right-angled sides in the same direction of the valve body (1); a wrench (4) is arranged at the upper end of the valve body (1); a nut (3) is arranged at the upper end of the wrench (4); a triangular plate (5) is arranged at the left end of the wrench (4); a limiting column (6) is arranged at the upper end of the connecting column (2); sealing joints (7) are arranged at the front and rear ends of the valve body (1); a sphere (8) is arranged inside the valve body (1); and a through hole (9) is arranged in the horizontal direction of the sphere (8).

2. According to claim 1, a small opening erosion resistant hard seal ball valve is characterized by: The left end of the valve body (1) is provided with an inflow channel (10), and the right end of the valve body (1) is provided with an outflow channel (11).

3. According to claim 1, a small opening erosion resistant hard seal ball valve is characterized by: An upper valve stem (12) is arranged at the upper end of the sphere (8), and an upper bearing (13) is arranged on the upper valve stem (12).

4. A small-opening erosion-resistant hard-sealed ball valve according to claim 1, characterized in that: A first spring (14) is arranged between the valve body (1) and the wrench (4), and a limiting end (15) is arranged at the lower end of the wrench (4).

5. The small-opening erosion-resistant hard-sealed ball valve according to claim 1, characterized in that: A lower valve stem (16) is provided at the lower end of the sphere (8), and a lower bearing (17) is provided on the lower valve stem (16).

6. The small-opening erosion-resistant hard-sealed ball valve according to claim 1, characterized in that: A valve seat (18) is arranged around the sphere (8) and forms a sealing contact with the sphere (8).

7. A small-opening erosion-resistant hard-sealed ball valve according to claim 6, characterized in that: A sealing ring (19) is arranged on the inner side of the valve seat (18), and a second spring (20) is arranged between the valve seat (18) and the inside of the valve body (1).

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