Valve cover forge piece with sealing piece convenient to replace

Abstract

The utility model discloses a valve cover forge piece convenient to replace a sealing element, which comprises a cover body assembly and a sealing assembly, the cover body assembly is composed of a lower connecting flange, a curved surface cover plate, a valve rod sleeve and an upper connecting flange, the curved surface cover plate is fixedly connected to the top of the lower connecting flange, the valve rod sleeve is fixedly connected to the top of the curved surface cover plate, and the sealing assembly is fixedly connected to the valve rod sleeve. The upper connecting flange is fixedly connected to the top of the valve rod sleeve, the sealing assembly comprises a first sealing ring, a second sealing ring and a third sealing ring, a first mounting groove is formed in the bottom of the lower connecting flange, and the first sealing ring is mounted in the first mounting groove. The pickup grooves are formed in the inner side and the outer side of the sealing ring, when the sealing ring is replaced, an operator can easily stretch into the pickup grooves, tightly pinch the sealing ring from the two sides, draw close the two sides, quickly separate the convex edges from the grooves and easily take out the sealing ring according to the cavity characteristics of the sealing ring, the complexity and difficulty of disassembly and assembly are reduced through the convenient replacement mode, and the replacement efficiency is improved. And the sealing ring can be conveniently and quickly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve cover forgings, and particularly relates to a valve cover forging facilitating the replacement of a sealing element. Background Art

[0002] Forging is a hot working process in which metal is plastically deformed under high temperature and high pressure environments to obtain metal products with the desired shape and properties. A valve cover forging refers to a valve component manufactured by a forging process. The structure of a valve cover forging generally includes a connecting part, a sealing surface, and other auxiliary components. The connecting part is used to connect with components such as the valve body to ensure the integrity and sealing performance of the valve. The sealing surface is the key contact surface between the valve cover and the valve body, and it needs to have a high degree of flatness and precision to ensure the sealing effect. Other auxiliary components such as positioning pins and sealing rings are used to further enhance the sealing performance and stability of the valve cover.

[0003] When some existing valve cover forgings are in use, the sealing elements on them have a relatively complex structure, and special tools and steps are required for disassembly and assembly, increasing the complexity and difficulty of disassembly and assembly and making it inconvenient to quickly replace the sealing elements.

[0004] For example, a valve cover forging with a sealing element disclosed in the patent with the publication number CN209325138U. When high-temperature medium flows through the ball valve in this valve cover forging, the temperature of the medium is transmitted to the ball core made of metal material, and the temperature of the ball core is transmitted to the thermal expansion layer through the rubber sealing body for thermal expansion, prompting the rubber sealing body to be extruded towards the ball core side to improve the sealing performance at the connection between the ball core and the valve cover. If the high-temperature medium fluid passing through the ball core does not fill the ball core, the heat can be first transmitted to the thermal expansion layer in the form of heat conduction through the metal skeleton, prompting the entire annular thermal expansion layer to be heated more fully and expand. At the same time, the metal skeleton can improve the overall structural strength of the sealing element, thereby extending the service life and being conducive to maintaining a good sealing effect.

[0005] Although the valve cover forging of this patent takes into account the improvement of sealing performance and adaptability in high-temperature environments in its design, there are indeed some inconveniences in the disassembly and replacement of the sealing element. Since the sealing element is designed to be relatively complex, including multiple layers such as a thermal expansion layer, a rubber sealing body, and a metal skeleton, and these structures are in close contact with each other, when it is necessary to disassemble and replace the sealing element, special tools and steps are required, increasing the complexity and difficulty of disassembly and assembly.

[0006] Therefore, it is very necessary to invent a valve cover forging facilitating the replacement of a sealing element to solve the above problems. Content of the Utility Model

[0007] The purpose of the utility model is to provide a valve cover forging facilitating the replacement of a sealing element to solve the problems in the above technology.

[0008] To achieve the above object, the present utility model provides the following technical solution: a valve cover forging facilitating the replacement of a seal, comprising a cover body assembly and a sealing assembly. The cover body assembly consists of a lower connecting flange, a curved surface cover plate, a valve stem sleeve and an upper connecting flange. The curved surface cover plate is fixedly connected to the top of the lower connecting flange. The valve stem sleeve is fixedly connected to the top of the curved surface cover plate. The upper connecting flange is fixedly connected to the top of the valve stem sleeve. The sealing assembly includes a first sealing ring, a second sealing ring and a third sealing ring. A first installation groove is formed at the bottom of the lower connecting flange. The first sealing ring is installed inside the first installation groove. A second installation groove is formed on the inner wall of the curved surface cover plate. The second sealing ring is installed inside the second installation groove. A third installation groove is formed on the inner wall of the valve stem sleeve. The third sealing ring is installed inside the third installation groove. A first picking groove is formed at the bottom of the lower connecting flange. The first picking groove communicates with the first installation groove. A second picking groove is formed on the inner wall of the curved surface cover plate. The second picking groove communicates with the second installation groove. A third picking groove is formed on the inner wall of the valve stem sleeve. The third picking groove communicates with the third installation groove.

[0009] By providing the first, second and third sealing rings, multi-layer sealing is achieved, enhancing the sealing performance between the valve cover and the valve body, between the valve cover and the ball valve, and between the valve cover and the valve stem, effectively preventing fluid leakage and improving the overall safety and reliability of the valve system.

[0010] Preferably, two groups of the first picking grooves are provided. The two groups of the first picking grooves are respectively arranged on both sides of the bottom of the lower connecting flange. The number of each group of the first picking grooves is set to two. The two first picking grooves are respectively arranged on the inner and outer sides of the first sealing ring.

[0011] An operator can easily insert a finger into the first picking groove and pinch the first sealing ring from both sides and take it out simultaneously.

[0012] Preferably, two groups of the second picking grooves are provided. The two groups of the second picking grooves are respectively arranged on both sides of the inner wall of the curved surface cover plate. The number of each group of the second picking grooves is set to two. The two second picking grooves are respectively arranged on the inner and outer sides of the second sealing ring.

[0013] An operator can easily insert a finger into the second picking groove and pinch the second sealing ring from both sides and take it out simultaneously.

[0014] Preferably, two groups of the third picking grooves are provided. The two groups of the third picking grooves are respectively arranged on both sides of the inner wall of the valve stem sleeve. The number of each group of the third picking grooves is set to two. The two third picking grooves are respectively arranged on the inner and outer sides of the third sealing ring.

[0015] The operator can easily insert a finger into the No. 3 picking slot, pinch the No. 3 sealing ring inward from both sides at the same time and take it out.

[0016] Preferably, cavities are provided inside the No. 1 sealing ring, the No. 2 sealing ring and the No. 3 sealing ring, and the No. 1 sealing ring, the No. 2 sealing ring and the No. 3 sealing ring are all made of rubber materials.

[0017] By utilizing the cavity characteristics inside the sealing ring, when the sealing ring is pinched, its two sides move closer to each other inward, thus quickly realizing the separation of the convex edge and the groove.

[0018] Preferably, convex edges are fixedly connected to the surfaces of the No. 1 sealing ring, the No. 2 sealing ring and the No. 3 sealing ring, grooves are provided on the inner walls of the No. 1 installation groove, the No. 2 installation groove and the No. 3 installation groove, and the convex edges are engaged with the grooves.

[0019] The design of the convex edge and the groove ensures the stable installation of the sealing ring, prevents leakage problems caused by loosening or falling off, and improves the sealing performance.

[0020] Preferably, installation holes are provided on the surfaces of the lower connecting flange and the upper connecting flange.

[0021] The design of the installation holes facilitates the connection of the valve cover forging to the valve body or other components through the lower connecting flange and the upper connecting flange.

[0022] Preferably, reinforcing ribs are fixedly connected to the outside of the valve stem sleeve, and the bottoms of the reinforcing ribs are fixedly connected to the curved surface cover plate.

[0023] The design of the reinforcing ribs enhances the structural strength of the valve stem sleeve, prevents the valve cover from deforming or being damaged due to the stress generated by the operation of the valve stem, and improves the durability and safety of the valve cover.

[0024] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0025] 1. By designing the No. 1, No. 2 and No. 3 picking slots, these picking slots communicate with the corresponding installation slots and are respectively located on the inner and outer sides of the sealing ring. When replacing the sealing ring, the operator can easily insert a finger into the picking slot, pinch the sealing ring inward from both sides at the same time, utilize the cavity characteristics inside the sealing ring to make its two sides move closer to each other inward, thus quickly realizing the separation of the convex edge and the groove, and smoothly taking out the sealing ring from the installation slot. Similarly, installing a new sealing ring also becomes simple and fast. Just put it into the installation slot and ensure that the convex edge is tightly engaged with the groove. This convenient replacement method reduces the complexity and difficulty of disassembly and assembly, and facilitates the quick replacement of the sealing ring.

[0026] 2. By respectively arranging the first, second, and third installation grooves in the lower connecting flange, the curved surface cover plate, and the valve stem sleeve, and installing the corresponding first, second, and third sealing rings, multi-layer sealing is achieved. This design significantly enhances the sealing performance between the valve cover and the valve body, between the valve cover and the ball valve, and between the valve cover and the valve stem, effectively preventing fluid leakage and improving the overall safety and reliability of the valve system. Brief Description of the Drawings

[0027] Figure 1 is a schematic diagram of the overall structure of the first perspective of the present utility model;

[0028] Figure 2 is a schematic diagram of the overall structure of the second perspective of the present utility model;

[0029] Figure 3 is a cross-sectional view of the overall structure of the first perspective of the present utility model;

[0030] Figure 4 is a cross-sectional view of the overall structure of the second perspective of the present utility model;

[0031] Figure 5 is a cross-sectional view of the structure of the cover body assembly of the present utility model.

[0032] Description of the Reference Numerals in the Drawings:

[0033] 1. Lower connecting flange; 2. Curved surface cover plate; 3. Valve stem sleeve; 4. Upper connecting flange; 5. First sealing ring; 6. Second sealing ring; 7. Third sealing ring; 8. First installation groove; 9. Second installation groove; 10. Third installation groove; 11. First picking groove; 12. Second picking groove; 13. Third picking groove; 14. Installation hole; 15. Reinforcing rib. Detailed Embodiment

[0034] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the drawings.

[0035] The present utility model provides as Figures 1-5A valve cover forging facilitating the replacement of a seal includes a cover body assembly and a seal assembly. The cover body assembly consists of a lower connecting flange 1, a curved surface cover plate 2, a valve stem sleeve 3, and an upper connecting flange 4. The curved surface cover plate 2 is fixedly connected to the top of the lower connecting flange 1. The valve stem sleeve 3 is fixedly connected to the top of the curved surface cover plate 2. The upper connecting flange 4 is fixedly connected to the top of the valve stem sleeve 3. The seal assembly includes a first seal ring 5, a second seal ring 6, and a third seal ring 7. A first installation groove 8 is formed at the bottom of the lower connecting flange 1, and the first seal ring 5 is installed inside the first installation groove 8. A second installation groove 9 is formed on the inner wall of the curved surface cover plate 2, and the second seal ring 6 is installed inside the second installation groove 9. A third installation groove 10 is formed on the inner wall of the valve stem sleeve 3, and the third seal ring 7 is installed inside the third installation groove 10. A first picking groove 11 is formed at the bottom of the lower connecting flange 1, and the first picking groove 11 communicates with the first installation groove 8. A second picking groove 12 is formed on the inner wall of the curved surface cover plate 2, and the second picking groove 12 communicates with the second installation groove 9. A third picking groove 13 is formed on the inner wall of the valve stem sleeve 3, and the third picking groove 13 communicates with the third installation groove 10.

[0036] In one aspect of this embodiment, the first picking grooves 11 are provided in two groups. The two groups of first picking grooves 11 are respectively arranged on both sides of the bottom of the lower connecting flange 1. The number of each group of first picking grooves 11 is set to two, and the two first picking grooves 11 are respectively arranged on the inner and outer sides of the first seal ring 5. The second picking grooves 12 are provided in two groups. The two groups of second picking grooves 12 are respectively arranged on both sides of the inner wall of the curved surface cover plate 2. The number of each group of second picking grooves 12 is set to two, and the two second picking grooves 12 are respectively arranged on the inner and outer sides of the second seal ring 6. The third picking grooves 13 are provided in two groups. The two groups of third picking grooves 13 are respectively arranged on both sides of the inner wall of the valve stem sleeve 3. The number of each group of third picking grooves 13 is set to two, and the two third picking grooves 13 are respectively arranged on the inner and outer sides of the third seal ring 7. Cavities are formed inside the first seal ring 5, the second seal ring 6, and the third seal ring 7. The first seal ring 5, the second seal ring 6, and the third seal ring 7 are all made of rubber material. Convex edges are fixedly connected to the surfaces of the first seal ring 5, the second seal ring 6, and the third seal ring 7. Grooves are formed on the inner walls of the first installation groove 8, the second installation groove 9, and the third installation groove 10, and the convex edges are engaged with the grooves. Installation holes 14 are formed on the surfaces of the lower connecting flange 1 and the upper connecting flange 4. A reinforcing rib 15 is fixedly connected to the outside of the valve stem sleeve 3, and the bottom of the reinforcing rib 15 is fixedly connected to the curved surface cover plate 2.

[0037] The working principle of the present utility model:

[0038] Refer to the attached drawings of the specification Figures 1-5, when using the utility model, first align the lower connecting flange 1 of the valve cover forging with the corresponding connecting port of the valve body to ensure that the mounting holes 14 are aligned, and use bolts or other fasteners to fix the lower connecting flange 1 on the valve body through the mounting holes 14. Ensure that the curved surface cover plate 2 covers the upper part of the ball valve, and the valve stem sleeve 3 is aligned with the valve stem channel of the ball valve. A first sealing ring 5 is installed in the first mounting groove 8 at the bottom of the lower connecting flange 1, which can enhance the sealing performance between the valve cover and the valve body. A second sealing ring 6 is installed in the second mounting groove 9 on the inner wall of the curved surface cover plate 2, which can improve the sealing performance between the valve cover and the ball valve. A third sealing ring 7 is installed in the third mounting groove 10 on the inner wall of the valve stem sleeve 3, which can enhance the sealing performance between the valve cover and the valve stem;

[0039] When disassembling, installing and replacing the sealing ring, first separate the valve cover forging from the valve body, find the corresponding first picking groove 11, second picking groove 12 or third picking groove 13, gently insert the finger into the picking groove, and squeeze it inward simultaneously from both sides of the sealing ring. Since there is a cavity inside the sealing ring, after being squeezed, both sides of the sealing ring will move closer inward, causing the convex edge to separate from the groove. Then, the sealing ring can be pulled out from the mounting groove, and the new sealing ring can be installed in the corresponding mounting groove to ensure that the convex edge and the groove are tightly clamped.

Claims

1. A valve cover forging for easy replacement of a seal, comprising a cover assembly and a seal assembly, characterized in that: The cover assembly is composed of a lower connecting flange (1), a curved cover plate (2), a valve stem sleeve (3) and an upper connecting flange (4); the curved cover plate (2) is fixedly connected to the top of the lower connecting flange (1); the valve stem sleeve (3) is fixedly connected to the top of the curved cover plate (2); the upper connecting flange (4) is fixedly connected to the top of the valve stem sleeve (3); the sealing assembly includes a No. 1 sealing ring (5), a No. 2 sealing ring (6) and a No. 3 sealing ring (7); a No. 1 mounting groove (8) is provided at the bottom of the lower connecting flange (1); the No. 1 sealing ring (5) is installed inside the No. 1 mounting groove (8); a No. 2 mounting groove (9) is provided on the inner wall of the curved cover plate (2) ), the No. 2 sealing ring (6) is installed inside the No. 2 mounting groove (9), the inner wall of the valve stem sleeve (3) is provided with a No. 3 mounting groove (10), the No. 3 sealing ring (7) is installed inside the No. 3 mounting groove (10), the bottom of the lower connecting flange (1) is provided with a No. 1 picking groove (11), the No. 1 picking groove (11) is connected with the No. 1 mounting groove (8), the inner wall of the curved cover plate (2) is provided with a No. 2 picking groove (12), the No. 2 picking groove (12) is connected with the No. 2 mounting groove (9), the inner wall of the valve stem sleeve (3) is provided with a No. 3 picking groove (13), the No. 3 picking groove (13) is connected with the No. 3 mounting groove (10).

2. A valve cover forging for facilitating replacement of a seal according to claim 1, characterized in that: The No. 1 picking groove (11) is provided in two groups, and the two groups of the No. 1 picking grooves (11) are respectively provided on both sides of the bottom of the lower connecting flange (1), and the number of the No. 1 picking grooves (11) in each group is set to two, and the two No. 1 picking grooves (11) are respectively provided on the inner and outer sides of the No. 1 sealing ring (5).

3. A valve cover forging for facilitating replacement of a seal according to claim 1, characterized in that: The No. 2 picking grooves (12) are arranged in two groups. The two groups of the No. 2 picking grooves (12) are respectively arranged on both sides of the inner wall of the curved cover plate (2). The number of the No. 2 picking grooves (12) in each group is set to two. The two No. 2 picking grooves (12) are respectively arranged on the inner and outer sides of the No. 2 sealing ring (6).

4. A valve cover forging for facilitating replacement of a seal according to claim 1, characterized in that: The No. 3 pickup groove (13) is provided in two groups, and the two groups of the No. 3 pickup grooves (13) are respectively provided on both sides of the inner wall of the valve stem sleeve (3), and the number of the No. 3 pickup grooves (13) in each group is set to two, and the two No. 3 pickup grooves (13) are respectively provided on the inner and outer sides of the No. 3 sealing ring (7).

5. The valve cover forging for facilitating replacement of a seal according to claim 1, characterized in that: The first sealing ring (5), the second sealing ring (6) and the third sealing ring (7) are all provided with cavities inside, and the first sealing ring (5), the second sealing ring (6) and the third sealing ring (7) are all made of rubber material.

6. The valve cover forging for facilitating replacement of a seal according to claim 1, characterized in that: The surfaces of the No. 1 sealing ring (5), the No. 2 sealing ring (6) and the No. 3 sealing ring (7) are all fixedly connected with convex edges, and the inner walls of the No. 1 installation groove (8), the No. 2 installation groove (9) and the No. 3 installation groove (10) are all provided with grooves, and the convex edges are snap-fitted with the grooves.

7. The valve cover forging for facilitating replacement of a seal according to claim 1, characterized in that: The surfaces of the lower connecting flange (1) and the upper connecting flange (4) are both provided with mounting holes (14).

8. The valve cover forging for facilitating replacement of a seal according to claim 1, characterized in that: A reinforcing rib (15) is fixedly connected to the outer side of the valve stem sleeve (3), and the bottom of the reinforcing rib (15) is fixedly connected to the curved cover plate (2).

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