A pressure-resistant valve cover casting

Abstract

The utility model discloses a kind of pressure resistance valve cover castings, it is related to valve cover casting technical field, including valve body, the valve body includes shell, the outer surface of the shell is fixedly connected with two fixed blocks, the top of the valve body is provided with valve cover mechanism, the valve cover mechanism includes cover, the outer surface of the cover is fixedly connected with rotating ear, the bottom of the cover is fixedly connected with first internal thread frame.The utility model has the following advantages and effects: the scheme utilizes new mechanical structure, through the synergistic effect of connecting mechanism and reinforcing assembly, effectively improve the stability and pressure resistance of valve cover and valve body connection, the rotation cooperation of rotating frame and rotating rod makes that sliding rod can be smoothly slid in rotating mouth, further enhances the adjusting capacity and bearing strength of entire connecting structure, to meet the use demand of different working conditions to valve cover casting pressure resistance.

Description

Technical Field

[0001] This utility model relates to a pressure-resistant valve cover casting, and more particularly to a valve cover casting of a pressure-resistant valve cover casting. Background Technology

[0002] Valve cover castings are valve top components manufactured using a casting process, typically made of cast iron or cast steel. Their main function is to seal the internal cavity of the valve, protecting core components such as the valve core and stem from external impurities. They also provide guidance for the valve stem's movement, ensuring proper valve opening and closing. They are widely used in pipeline systems in the petroleum, chemical, and water conservancy industries.

[0003] Chinese Patent CN204004676U discloses a stainless steel special sealing cap casting for check valves. It includes a sealing cap body and a reinforcing mechanism, with the reinforcing mechanism located on the upper part of the sealing cap. This sealing cap adopts a one-piece stainless steel structure, resulting in a longer service life and stable pressure resistance. It solves the problems of easy contamination and rusting, and insufficient pressure resistance leading to detachment in existing technologies. Furthermore, the reinforcing mechanism allows for secondary reinforcement of the sealing cap, addressing the issue of traditional sealing caps being unable to be reinforced with tools, thus improving work efficiency. While this structure allows for easy unscrewing of the valve cap from the outside with tools, the connection point still uses only a single layer of thread, therefore, the pressure resistance at the valve cap connection point still needs improvement. Utility Model Content

[0004] The purpose of this invention is to provide a pressure-resistant valve cover casting to address the problem that the valve cover connection still uses only a single layer of thread, and the pressure resistance at the valve cover connection still needs to be improved.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] By adopting the above technical solution, a pressure-resistant valve cover casting includes a valve body, the valve body including an outer shell, two fixing blocks fixedly connected to the outer surface of the outer shell, a valve cover mechanism provided at the top of the valve body, the valve cover mechanism including a cover body, a rotating lug fixedly connected to the outer surface of the cover body, a first internal thread frame fixedly connected to the bottom of the cover body, a second internal thread frame provided on one side of the first internal thread frame, a connecting mechanism provided on the outer surface of each of the two fixing blocks, the connecting mechanism including a connecting block, a connecting plate fixedly connected to the top of the connecting block, a moving groove opened at the bottom of the connecting block, a reinforcing component provided on one side of the moving groove, the reinforcing component including a positioning block, a spring fixedly connected to one side of the positioning block, a moving plate provided at the bottom of the spring, and two limiting blocks fixedly connected to the top of the moving plate.

[0007] A further configuration is provided: a sliding groove is provided at the top of the moving groove, and the inner wall of the sliding groove is slidably connected to the outer surface of the positioning block.

[0008] Further configured as: a pressure-resistant valve cover casting, wherein one end of the spring is fixedly connected to the inner wall of the sliding groove, and the outer surface of the moving plate is slidably connected to the inner wall of the moving groove.

[0009] The configuration is further defined as follows: one side of each of the two limiting blocks is slidably connected to both sides of the moving groove.

[0010] The configuration is further defined as follows: the inner wall of the first internal threaded frame is fixedly connected to the outer surface of the connecting plate by threads, and the inner wall of the second internal threaded frame is fixedly connected to the top of the outer shell by threads.

[0011] A further configuration is provided: a rotating frame is fixedly connected to the bottom of the movable plate, and a rotating rod is rotatably connected to the outer surface of the rotating frame.

[0012] The configuration is further defined as follows: one end of the rotating rod is fixedly connected to a sliding rod, and the other end of the rotating rod is fixedly connected to a rotating column.

[0013] The configuration is further defined as follows: the outer surface of the rotating column is rotatably connected to the inner wall of the rotating frame via a bearing.

[0014] The further configuration is as follows: a movable opening is provided at the bottom of the movable groove, and a rotating opening is provided on one side of the movable opening.

[0015] A further configuration is made whereby the inner wall of the rotating opening is slidably connected to the outer surface of the sliding rod.

[0016] In summary, this utility model has the following beneficial effects:

[0017] Through the synergistic effect of the connecting mechanism and the reinforcing components, the stability and compressive strength of the connection between the valve cover and the valve body are effectively improved. In the actual assembly process, when the cover is threaded to the connecting plate through the first internal thread frame and fixed to the top of the outer shell with the help of the second internal thread frame, the moving groove at the bottom of the connecting block provides installation and movement space for the reinforcing components. The positioning block can move flexibly along the sliding groove under the elastic action of the spring. With the limit block at the top of the moving plate and the sliding connection on both sides of the moving groove, it is ensured that the moving plate can maintain a stable sliding trajectory when under force, avoiding deviation. The rotational cooperation between the rotating frame and the rotating rod allows the sliding rod to slide smoothly in the rotating port, further enhancing the adjustment capability and load-bearing strength of the entire connection structure, thereby meeting the requirements for the compressive strength of the valve cover casting under different working conditions. Attached Figure Description

[0018] Figure 1 A three-dimensional structural view of a pressure-resistant valve cover casting provided by this utility model;

[0019] Figure 2 A bottom perspective view of the disassembled cover body of a pressure-resistant valve cover casting provided by this utility model;

[0020] Figure 3 A top perspective view of the disassembled cover body of a pressure-resistant valve cover casting provided by this utility model;

[0021] Figure 4 A cross-sectional perspective view of the connecting block and connecting plate of a pressure-resistant valve cover casting provided by this utility model;

[0022] Figure 5 A three-dimensional structural view of the rotating rod portion of a pressure-resistant valve cover casting provided by this utility model;

[0023] In the diagram: 1. Valve body; 2. Valve cover mechanism; 3. Connecting mechanism; 4. Reinforcing components;

[0024] 1. Valve body; 11. Housing; 12. Fixing block;

[0025] 2. Valve cover mechanism; 21. Cover body; 22. Rotating lug; 23. First internal thread frame; 24. Second internal thread frame;

[0026] 3. Connecting mechanism; 31. Connecting block; 32. Connecting plate; 33. Moving groove; 34. Rotating port;

[0027] 4. Reinforcing components; 41. Positioning block; 42. Spring; 43. Moving plate; 44. Limiting block; 45. Rotating frame; 46. Rotating rod; 47. Sliding rod; 48. Rotating column. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] A pressure-resistant valve cover casting

[0030] Example: A pressure-resistant valve cover casting, such as Figure 1-5As shown, the device includes a valve body 1, which includes a housing 11. Two fixing blocks 12 are fixedly connected to the outer surface of the housing 11. A valve cover mechanism 2 is provided on the top of the valve body 1. The valve cover mechanism 2 includes a cover body 21. A rotating lug 22 is fixedly connected to the outer surface of the cover body 21. A first internal thread frame 23 is fixedly connected to the bottom of the cover body 21. A second internal thread frame 24 is provided on one side of the first internal thread frame 23. A connecting mechanism 3 is provided on the outer surface of each of the two fixing blocks 12. The connecting mechanism 3 includes a connecting block 31. A connecting plate 32 is fixedly connected to the top of the connecting block 31. A moving groove 33 is opened at the bottom of the connecting block 31. A reinforcing component 4 is provided on one side of the moving groove 33. The system includes a positioning block 41, a spring 42 fixedly connected to one side of the positioning block 41, a movable plate 43 at the bottom of the spring 42, two limiting blocks 44 fixedly connected to the top of the movable plate 43, a sliding groove at the top of the movable groove 33, the inner wall of the sliding groove being slidably connected to the outer surface of the positioning block 41, one end of the spring 42 being fixedly connected to the inner wall of the sliding groove, the outer surface of the movable plate 43 being slidably connected to the inner wall of the movable groove 33, one side of each of the two limiting blocks 44 being slidably connected to the two sides of the movable groove 33, the inner wall of the first internal thread frame 23 being fixedly connected to the outer surface of the connecting plate 32 via threads, and the inner wall of the second internal thread frame 24 being fixedly connected to the top of the outer shell 11 via threads.

[0031] By setting a connecting block 31, with a snap-fit ​​groove on one side, it can be snapped onto the outer surface of the fixing block 12. Then, through the connecting plate 32, the bottom of the cover 21 is connected to the top of the cover 21 and the outer surface of the connecting plate 32 simultaneously via the first internal thread frame 23 and the second internal thread frame 24, providing a double connection for the cover 21. This makes the connection of the cover 21 more secure and stable, increasing its compressive strength. The reinforcing component 4 further stabilizes the installation of the connecting block 31. The first internal thread frame 23 has snap-fit ​​grooves on both sides of its inner wall that engage with the positioning block 41. The rectangular groove is connected so that the positioning block 41 can be locked in the sliding groove and the rectangular groove, thereby preventing the connecting plate 32 from moving laterally. The movable plate 43 is provided to push the positioning block 41 outward and lock it in the rectangular groove. The spring 42 automatically pulls the positioning block 41 backward when the pressure of the movable plate 43 on one end of the positioning block 41 is released, making it easier to remove the cover 21. The limiting block 44 is provided to prevent the movable plate 43 from disengaging from the movable groove 33. In addition, the rotating ear 22 is provided to make it easier to twist the cover 21 by snapping on the rotating ear 22.

[0032] A rotating frame 45 is fixedly connected to the bottom of the movable plate 43. A rotating rod 46 is rotatably connected to the outer surface of the rotating frame 45. A sliding rod 47 is fixedly connected to one end of the rotating rod 46. A rotating column 48 is fixedly connected to the other end of the rotating rod 46. The outer surface of the rotating column 48 is rotatably connected to the inner wall of the rotating frame 45 through a bearing. A moving opening is provided at the bottom of the movable slot 33. A rotating opening 34 is provided on one side of the moving opening. The inner wall of the rotating opening 34 is slidably connected to the outer surface of the sliding rod 47.

[0033] The rotating frame 45 and rotating column 48 are set to support the rotation of the rotating rod 46, so that the rotating rod 46 slides in the rotating opening 34 through the sliding rod 47 and rotates to the side of the moving plate 43, so that the moving plate 43 will not move downward and apply continuous pressure to the end of the positioning block 41 near the spring 42. In addition, the bottom edge of the positioning block 41 and the top of the moving plate 43 that are in contact is set as a slope, which makes it easier for the moving plate 43 to apply pressure to it.

[0034] Working principle: During actual installation, the connecting block 31 is first engaged with the fixing block 12 through the snap-fit ​​groove. Then, the cover 21 is rotated so that the second internal thread frame 24 is threadedly connected to the top of the outer shell 11. At the same time, the first internal thread frame 23 is threadedly engaged with the outer surface of the connecting plate 32. At this time, the moving plate 43 is pushed to move upward in the moving groove 33. The inclined surface at the top of the moving plate 43 presses the positioning block 41, causing it to move along the sliding groove towards the first internal thread frame 23. At the same time, the spring 42 is stretched until the positioning block 41 is engaged in the rectangular groove on the inner wall of the first internal thread frame 23, thus completing the lateral limitation of the connecting plate 32. Finally, under the rotational support of the rotating frame 45 and the rotating column 48, the rotating rod 46 slides in the rotating opening 34 through the sliding rod 47 and rotates towards the moving plate 43, so that the moving plate 43 will not move downward, thus applying continuous pressure to the end of the positioning block 41 near the spring 42.

[0035] When disassembly is required, the sliding rod 47 is rotated in the opposite direction to release the limit, and the moving plate 43 can slide down. The spring 42 resets and drives the positioning block 41 to disengage from the rectangular groove, so the cover 21 can be unscrewed and the connecting mechanism 3 can be removed. Throughout the process, the limit block 44 slides along both sides of the moving groove 33 to ensure that the moving plate 43 always moves in the moving groove 33 and avoids disengaging from the moving groove 33, which effectively improves the stability and pressure resistance of the connection between the valve cover mechanism 2 and the valve body 1.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A pressure-resistant valve cover casting, comprising a valve body (1), characterized in that: The valve body (1) includes a shell (11), and two fixing blocks (12) are fixedly connected to the outer surface of the shell (11). A valve cover mechanism (2) is provided on the top of the valve body (1). The valve cover mechanism (2) includes a cover body (21), and a rotating lug (22) is fixedly connected to the outer surface of the cover body (21). A first internal thread frame (23) is fixedly connected to the bottom of the cover body (21). A second internal thread frame (24) is provided on one side of the first internal thread frame (23). The outer surfaces of the two fixing blocks (12) are provided with connecting... The connecting mechanism (3) includes a connecting block (31), a connecting plate (32) is fixedly connected to the top of the connecting block (31), a moving groove (33) is provided at the bottom of the connecting block (31), a reinforcing component (4) is provided on one side of the moving groove (33), the reinforcing component (4) includes a positioning block (41), a spring (42) is fixedly connected to one side of the positioning block (41), a moving plate (43) is provided at the bottom of the spring (42), and two limiting blocks (44) are fixedly connected to the top of the moving plate (43).

2. The pressure-resistant valve cover casting according to claim 1, characterized in that: The top of the moving groove (33) is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to the outer surface of the positioning block (41).

3. The pressure-resistant valve cover casting according to claim 1, characterized in that: One end of the spring (42) is fixedly connected to the inner wall of the sliding groove, and the outer surface of the moving plate (43) is slidably connected to the inner wall of the moving groove (33).

4. The pressure-resistant valve cover casting according to claim 1, characterized in that: One side of each of the two limiting blocks (44) is slidably connected to both sides of the moving groove (33).

5. A pressure-resistant valve cover casting according to claim 1, characterized in that: The inner wall of the first internal threaded frame (23) is fixedly connected to the outer surface of the connecting plate (32) by threads, and the inner wall of the second internal threaded frame (24) is fixedly connected to the top of the outer shell (11) by threads.

6. A pressure-resistant valve cover casting according to claim 1, characterized in that: The bottom of the movable plate (43) is fixedly connected to a rotating frame (45), and a rotating rod (46) is rotatably connected to the outer surface of the rotating frame (45).

7. A pressure-resistant valve cover casting according to claim 6, characterized in that: One end of the rotating rod (46) is fixedly connected to a sliding rod (47), and the other end of the rotating rod (46) is fixedly connected to a rotating column (48).

8. A pressure-resistant valve cover casting according to claim 7, characterized in that: The outer surface of the rotating column (48) is rotatably connected to the inner wall of the rotating frame (45) via a bearing.

9. A pressure-resistant valve cover casting according to claim 1, characterized in that: The bottom of the movable groove (33) is provided with a movable opening, and a rotating opening (34) is provided on one side of the movable opening.

10. A pressure-resistant valve cover casting according to claim 9, characterized in that: The inner wall of the rotating port (34) is slidably connected to the outer surface of the sliding rod (47).

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