Anti-leakage self-sealing valve body

Abstract

The utility model discloses an anti-leakage self-sealing valve body, which relates to the technical field of valve bodies and comprises a valve seat, a first cavity and a second cavity are arranged in the valve seat, a partition plate is arranged between the first cavity and the second cavity, a through hole is arranged in the middle of the partition plate, a valve cover is connected onto the valve seat through a bolt, and a positioning seat is arranged on the partition plate. A sliding rod is fixedly installed at the bottom of the valve deck and correspondingly matched with the positioning seat, a movable frame is arranged on the sliding rod in a sliding mode, a sealing plug is arranged at the bottom of the movable frame and matched with the through hole, a sealing gasket is arranged on the peripheral side of the sealing plug, a movable rod is rotationally installed at the top of the movable frame, and a thread is arranged on the movable rod. The threads are spirally connected with a fixing plate which is fixed to the top of the valve deck through a support. By rotating the moving rod, the positions of the moving frame and the sealing plug can be accurately controlled, so that the sealing plug is tightly matched with the through hole, and a good sealing effect can be kept under different pressure conditions.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, specifically to a self-sealing valve body that prevents external leakage. Background Technology

[0002] Valves are control components in fluid transport systems, with functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, flow diversion, or overflow pressure relief. With the increasing development of my country's pipeline system industry, the demand for valves is also growing, and the requirements for them are becoming more stringent. Valves are now widely used in many industries.

[0003] Chinese utility model patent application number 202223297191.1 provides a self-sealing valve to prevent external leakage. After the valve core is locked inside the valve seat to close the valve body, the elastic force of the fixed spring can be used to make the movable block descend and drive the sealing plate to firmly cover the top of the valve seat. This facilitates the sealing of the top of the valve seat and prevents the valve core or sealing ring from wearing down, which would lead to a decrease in the sealing performance with the inside of the valve seat and thus prevent external leakage.

[0004] However, during the use of the above equipment, it was found that each spring has its elastic limit. If the water pressure exceeds the maximum pressure that the spring can withstand, the spring will be over-compressed and unable to return to its original state, which will cause gaps between the sealing plate and the valve seat, resulting in leakage. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a self-sealing valve body that prevents external leakage, thus solving the problem mentioned in the background technology where, when the water pressure exceeds the maximum pressure that the spring can withstand, the spring is over-compressed and cannot return to its original state, resulting in gaps between the sealing plate and the valve seat and causing leakage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-sealing valve body for preventing external leakage, comprising a valve seat, wherein the valve seat has a first cavity and a second cavity, a partition is provided between the first cavity and the second cavity, the partition has a through hole in the middle, a valve cover is bolted to the valve seat, a positioning seat is provided on the partition, a sliding rod is fixedly installed at the bottom of the valve cover, the sliding rod is correspondingly adapted to the positioning seat, a movable frame is slidably mounted on the sliding rod, a sealing plug is provided at the bottom of the movable frame, the sealing plug is adapted to the through hole, a sealing gasket is provided around the sealing plug, a movable rod is rotatably mounted at the top of the movable frame, the movable rod has a spiral pattern, the spiral pattern is spirally connected to a fixed plate, and the fixed plate is fixed to the top of the valve cover by a bracket.

[0007] Preferably, the fixing plate has an installation groove.

[0008] Preferably, the movable rod is fixedly connected to the rotating wheel, and a limit groove is vertically formed on the movable rod.

[0009] Preferably, a limiting component is installed on one side of the fixed plate, and a limiting frame in the limiting component is installed on one side of the fixed plate by bolts. A moving groove is opened in the middle of the limiting frame, and a limiting rod slides through the moving groove. A limiting plate is fixedly installed in the middle of the limiting rod, and the limiting plate is connected to the moving groove by a spring. A pull handle is fixedly connected to one end of the limiting rod.

[0010] Preferably, the movable groove corresponds to the mounting groove, and the diameter of the movable groove is the same as the diameter of the mounting groove.

[0011] Preferably, the other end of the limiting rod passes through the mounting groove, and the limiting rod and the limiting groove are correspondingly adapted.

[0012] This utility model provides a self-sealing valve body that prevents external leakage. It has the following beneficial effects:

[0013] (1) This utility model uses a rotating moving rod and a spiral connection between the spiral thread and the fixed plate to precisely control the position of the moving frame and the sealing plug. Compared with the uncertainty of the spring force, this method can more accurately achieve a tight fit between the sealing plug and the through hole, ensuring a good sealing effect under different pressure conditions and not being restricted by the influence of pressure fluctuations on the spring performance.

[0014] (2) The limiting rod and the limiting groove of this utility model are compatible. When the moving rod rotates to a specific position, the limiting rod can be inserted into the limiting groove to limit the moving rod, prevent it from rotating at will, ensure the position of the sealing plug is accurate and stable, and thus ensure the sealing performance of the valve. Attached Figure Description

[0015] Figure 1 This is a diagram showing the overall structure of the present utility model;

[0016] Figure 2 This utility model Figure 1 Structural diagram of the middle valve cover;

[0017] Figure 3 This utility model Figure 1 Structural diagram of the middle limit component;

[0018] Figure 4 This utility model Figure 1 A structural diagram of the middle valve seat.

[0019] In the diagram, 1 is the valve seat; 11 is the first cavity; 12 is the second cavity; 13 is the partition; 131 is the through hole; and 132 is the positioning seat.

[0020] 2. Valve cover; 21. Slide rod; 3. Fixing plate; 31. Mounting groove;

[0021] 4. Limiting component; 41. Limiting bracket; 42. Limiting rod; 43. Limiting plate; 44. Moving groove; 45. Spring; 46. Pull handle;

[0022] 5. Rotary wheel; 51. Moving rod; 52. Spiral pattern; 53. Limiting groove;

[0023] 6. Movable frame; 61. Sealing plug; 62. Sealing gasket. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] Please see Figures 1-4 This utility model provides a self-sealing valve body for preventing external leakage, including a valve seat 1. The valve seat 1 has a first cavity 11 and a second cavity 12 inside. A partition 13 is provided between the first cavity 11 and the second cavity 12. A through hole 131 is opened in the middle of the partition 13. A valve cover 2 is connected to the valve seat 1 by bolts. A positioning seat 132 is provided on the partition 13. A slide rod 21 is fixedly installed at the bottom of the valve cover 2. The slide rod 21 is correspondingly adapted to the positioning seat 132. A movable frame 6 is slidably arranged on the slide rod 21. A sealing plug 61 is provided at the bottom of the movable frame 6. The sealing plug 61 is adapted to the through hole 131. A sealing gasket 62 is provided around the sealing plug 61. A movable rod 51 is rotatably installed on the top of the movable frame 6. A spiral pattern 52 is provided on the movable rod 51. The spiral pattern 52 is spirally connected to a fixed plate 3. The fixed plate 3 is fixed to the top of the valve cover 2 by a bracket.

[0027] Specifically, the spiral 52 on the moving rod 51 is spirally connected to the fixed plate 3. By rotating the moving rod 51, the moving distance of the moving frame 6 can be precisely controlled by using the principle of spiral transmission. The sliding rod 21 at the bottom of the second valve cover 2 corresponds to and is matched with the positioning seat 132 on the partition plate 13, providing precise guidance for the up and down movement of the moving frame 6, ensuring that the sealing plug 61 can be accurately inserted into the through hole 131, ensuring the reliability of the seal, and enabling the sealing plug 61 to fit tightly with the through hole 131 to achieve a good sealing effect.

[0028] A sealing gasket 62 is provided on the periphery of the sealing plug 61. When the sealing plug 61 is inserted into the through hole 131, the sealing gasket 62 is squeezed by the partition 13, filling the gap between the sealing plug 61 and the through hole 131, further enhancing the sealing effect, preventing the medium from leaking from the gap between the sealing plug 61 and the through hole 131, achieving a high-efficiency sealing function, improving the sealing performance of the valve, and preventing external leakage.

[0029] The guiding structure of the slide rod 21 and the positioning seat 132, as well as the spiral connection structure between the moving rod 51 and the fixed plate 3, make the entire sealing structure more stable during operation. It can withstand certain pressure and external force, and is not prone to shaking or displacement, thus ensuring the reliability and stability of the seal.

[0030] Furthermore, to ensure the stability of the seal, please refer to [link / reference needed]. Figures 1-4 The fixing plate 3 has an installation groove 31.

[0031] The movable rod 51 is fixedly connected to the rotating wheel 5, and a limit groove 53 is vertically provided on the movable rod 51;

[0032] A limiting component 4 is installed on one side of the fixed plate 3. The limiting frame 41 in the limiting component 4 is installed on one side of the fixed plate 3 by bolts. A moving groove 44 is opened in the middle of the limiting frame 41. A limiting rod 42 slides through the moving groove 44. A limiting plate 43 is fixedly installed in the middle of the limiting rod 42. The limiting plate 43 is connected to the moving groove 44 by a spring 45. A pull handle 46 is fixedly connected to one end of the limiting rod 42.

[0033] The movable groove 44 corresponds to the mounting groove 31, and the diameter of the movable groove 44 is the same as the diameter of the mounting groove 31;

[0034] The other end of the limiting rod 42 passes through the mounting groove 31, and the limiting rod 42 is correspondingly matched with the limiting groove 53.

[0035] Specifically, under normal conditions, the limit rod 42 is inserted into the limit groove 53, which restricts the rotation of the moving rod 51 and ensures that the moving rod 51 will not rotate due to accidental contact when the valve body is open or closed. This prevents the sealing plug 61 from moving accidentally, causing sealing failure or a change in valve status, thus improving the stability and reliability of valve operation and further ensuring the stability of valve body sealing.

[0036] When it is necessary to change the valve body state, pulling the handle 46 can easily move the limiting rod 42 outward, causing it to disengage from the limiting groove 53 and releasing the limitation on the moving rod 51. At this time, the rotating wheel 5 can be easily rotated to control the moving rod 51, thereby realizing the movement of the sealing plug 61 and completing the opening or closing operation of the valve body. After the operation is completed, releasing the handle 46 will cause the limiting rod 42 to automatically return to the limiting groove 53 under the action of the spring 45, limiting the moving rod 51 again. The whole operation process is simple and convenient, and can flexibly control the valve state.

[0037] Working principle: Under normal conditions, the limiting rod 42 is inserted into the limiting groove 53, and the valve body is in the open or closed state. When it is necessary to close the valve body, first pull the handle 46. The handle 46 drives the limiting rod 42 to move outward, so that the limiting rod 42 is disengaged from the limiting groove 53, releasing the limitation on the moving rod 51. Then, rotate the wheel 5, which drives the moving rod 51 to rotate. Since the spiral thread 52 on the moving rod 51 is spirally connected to the fixed plate 3, according to the principle of spiral transmission, the rotation of the moving rod 51 will be converted into its axial movement, which in turn drives the moving frame 6 to move downward along the slide rod 21. The sealing plug 61 at the bottom of the moving frame 6 moves downward along with the moving frame 6 and gradually inserts into the through hole 131 in the middle of the partition plate 13. When the sealing plug 61 is fully inserted into the through hole 131, the sealing gasket 62 on the periphery of the sealing plug 61 is squeezed by the partition 13, filling the gap between the sealing plug 61 and the through hole 131, thereby sealing and closing the valve body and preventing the medium from flowing between the first chamber 11 and the second chamber 12. When the pull handle 46 is released, under the action of the spring 45, the limiting rod 42 is reset and inserted into the limiting groove 53 to limit the moving rod 51, preventing it from rotating accidentally and causing the sealing plug 61 to change position, thus ensuring that the valve body is in a stable closed state.

[0038] To open the valve body, first pull the handle 46. The handle 46 moves the limiting rod 42 outward, causing it to disengage from the limiting groove 53 and release the limiting effect on the moving rod 51. Then, rotate the wheel 5 in the opposite direction. The wheel 5 drives the moving rod 51 to rotate in the opposite direction. The moving rod 51, through a screw drive, moves the moving frame 6 upward along the slide rod 21. The sealing plug 61 is then pulled out of the through hole 131, thereby opening the valve body and allowing the passage between the first chamber 11 and the second chamber 12 to flow freely, allowing the medium to flow between the two chambers. After moving to the appropriate position, release the handle 46. Under the action of the spring 45, the limiting rod 42 returns to its original position and inserts into the limiting groove 53, limiting the moving rod 51 and preventing accidental rotation that could cause the sealing plug 61 to change position, ensuring that the valve body is in a stable open state.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-sealing valve body for preventing external leakage, comprising a valve seat (1), wherein the valve seat (1) has a first cavity (11) and a second cavity (12) disposed inside, a partition (13) is disposed between the first cavity (11) and the second cavity (12), the partition (13) having a through hole (131) in the middle, and a valve cover (2) is bolted to the valve seat (1), characterized in that: A positioning seat (132) is provided on the partition plate (13). A slide rod (21) is fixedly installed at the bottom of the valve cover (2). The slide rod (21) is adapted to the positioning seat (132). A movable frame (6) is slidably provided on the slide rod (21). A sealing plug (61) is provided at the bottom of the movable frame (6). The sealing plug (61) is adapted to the through hole (131). A sealing gasket (62) is provided on the periphery of the sealing plug (61). A movable rod (51) is rotatably installed on the top of the movable frame (6). A spiral pattern (52) is provided on the movable rod (51). The spiral pattern (52) is spirally connected to the fixing plate (3). The fixing plate (3) is fixed to the top of the valve cover (2) by a bracket.

2. The valve body of the anti-external leakage self-sealing valve according to claim 1, characterized in that: The fixing plate (3) has an installation groove (31).

3. The valve body of the anti-external leakage self-sealing valve according to claim 2, characterized in that: The movable rod (51) is fixedly connected to the rotating wheel (5), and a limit groove (53) is vertically opened on the movable rod (51).

4. The valve body of the anti-external leakage self-sealing valve according to claim 3, characterized in that: A limiting assembly (4) is installed on one side of the fixed plate (3). The limiting frame (41) in the limiting assembly (4) is installed on one side of the fixed plate (3) by bolts. A moving groove (44) is provided in the middle of the limiting frame (41). A limiting rod (42) slides through the moving groove (44). A limiting plate (43) is fixedly provided in the middle of the limiting rod (42). The limiting plate (43) is connected to the moving groove (44) by a spring (45). A pull handle (46) is fixedly connected to one end of the limiting rod (42).

5. The valve body of the anti-external leakage self-sealing valve according to claim 4, characterized in that: The movable groove (44) corresponds to the mounting groove (31), and the diameter of the movable groove (44) is the same as the diameter of the mounting groove (31).

6. The valve body of the anti-external leakage self-sealing valve according to claim 5, characterized in that: The other end of the limiting rod (42) passes through the mounting groove (31), and the limiting rod (42) and the limiting groove (53) are correspondingly adapted to each other.

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