A valve structure with high sealing performance

Abstract

The utility model relates to valve technical field, concretely relates to a kind of high sealing valve structure, including valve body, gasket structure and reinforcing structure, the valve body includes flange plate, recess is opened in the outer wall of the flange plate, the inner wall of the recess is fixedly connected gasket, the middle inner wall of the gasket is fixedly connected sealing ring, the left and right sides of the fixed ring in bottom end are all fixedly connected fixed plate one, the left and right sides of the fixed ring in top end are all fixedly connected fixed plate two, the fixed plate one rotationally connects rotating rod, the top of the rotating rod is fixedly connected threaded rod, the threaded rod is connected with hexagon nut, the bottom of the hexagon nut is fixedly connected with limit seat, the top of fixed plate two is clamped the bottom end of the limit seat.The utility model is provided with reinforcing structure, the reinforcing structure can be used as a whole frame to the external reinforcing structure, greatly enhance the rigidity of flange connection.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a high-sealing valve structure. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the transported medium. Based on their function, they can be classified into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid transport systems, possessing functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, or pressure relief. Valves used in fluid control systems range from the simplest shut-off valves to the various valves used in extremely complex automated control systems, with a wide variety of types and specifications.

[0003] However, existing valves often lack the function of reinforcing flanges. When pipelines are subjected to vibration, water hammer impact, or thermal stress caused by temperature changes, the flanges may experience relative displacement and loosening, which may lead to sealing failure due to loose joints. Therefore, a valve structure with high sealing performance is urgently needed to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide a valve structure with high sealing performance, so as to solve the problem mentioned in the background art that existing valves often do not have the function of reinforcing flanges.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-sealing valve structure, comprising a valve body, a gasket structure, and a reinforcing structure. The valve body includes a flange. The gasket structure includes a groove and a gasket. The outer wall of the flange has a groove, and the inner wall of the groove is fixedly connected to the gasket. The middle inner wall of the gasket is fixedly connected to a sealing ring, which is fitted onto the inner wall of the flange. The reinforcing structure includes two fixing rings. The left and right sides of the bottom fixing ring are fixedly connected to a fixing plate one, and the left and right sides of the top fixing ring are fixedly connected to a fixing plate two. The fixing plate one is rotatably connected to a rotating rod, and the top of the rotating rod is fixedly connected to a threaded rod. The threaded rod is threadedly connected to a hexagonal nut, and the bottom of the hexagonal nut is fixedly connected to a limiting seat. The bottom end of the limiting seat is engaged with the top of the fixing plate two.

[0006] Preferably, the flange is fixedly connected to the pipe flange by eight fixing bolts.

[0007] Preferably, a sealing gasket is fixedly connected to the inner wall of the fixing ring, the sealing gasket is U-shaped, and the inner wall of the sealing gasket is attached to the outer wall of the flange.

[0008] Preferably, the top of the hexagonal nut is engaged with a hand-tightening handle, and the bottom of the hand-tightening handle has a corresponding groove.

[0009] Preferably, the hand-twisting handle is a hexagonal handle, and its surface is provided with an anti-slip coating.

[0010] Preferably, the limiting seat is a T-shaped cylinder, and the limiting seat has a circular hole in the middle that is larger than the diameter of the threaded rod.

[0011] Preferably, four protrusions are fixedly connected to the outer walls of both the front and rear ends of the fixing ring, and the protrusions are provided with an inclined surface on the side near the middle.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This high-sealing valve structure is equipped with a gasket structure. When the flange of the valve body and the flange of the pipeline are tightened by the fixing bolts, the gasket located in the groove will be compressed and deformed first, filling the micro-unevenness between the two flange contact surfaces and forming the first sealing barrier. When the medium pressure increases, the pressure will act on the inner side and end face of the sealing ring. The pressure forces the sealing ring to expand radially outward and fit more tightly against the outer wall of the groove, preventing the medium from leaking from the outside of the gasket. It combines the initial static sealing of the gasket and the dynamic self-tightening sealing of the sealing ring, forming a double insurance. It is especially suitable for working conditions with large pressure fluctuations or high pressure. The sealing performance increases with the increase of pressure.

[0013] 2. This high-sealing valve structure features a reinforcement structure. Two fixing rings are respectively fitted onto the upper and lower sides of the flange. The inclined surfaces of the protrusions on the outer wall press against the outer wall of the flange, causing the two flanges to be engaged between the fixing rings. A sealing gasket seals the edges of the flanges, forming a jacket covering the outside of the flange. Turning the hand-tightening handle causes the hexagonal nut to rotate, which in turn moves the limit seat downwards, locking it onto the top of the second fixing plate. For further reinforcement, the hand-tightening handle can be removed, and the hexagonal nut can be turned with a wrench to further reinforce the limit seat. This reinforcement structure acts as a unified frame for the external reinforcement structure, greatly enhancing the rigidity of the flange connection. When the pipeline is subjected to vibration, water hammer impact, or thermal stress caused by temperature changes, this structure can effectively suppress the relative displacement and loosening of the flanges, fundamentally avoiding sealing failure caused by loose joints. Attached Figure Description

[0014] Figure 1 This is a front perspective view of the present utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a schematic diagram of the gasket structure of this utility model; Figure 4 This is an exploded view of the gasket structure of this utility model; Figure 5 This is a schematic diagram of the explosive structure of the reinforcement structure of this utility model.

[0015] In the diagram: 1. Valve body; 11. Flange; 12. Fixing bolt; 2. Gasket structure; 21. Groove; 22. Gasket; 23. Sealing ring; 3. Reinforcing structure; 31. Fixing ring; 32. Protrusion; 33. Sealing gasket; 34. Fixing plate one; 35. Fixing plate two; 36. Rotating rod; 37. Threaded rod; 38. Hex nut; 39. Limit seat; 310. Hand-tightening handle. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0017] Please see Figure 1-5 This utility model provides an embodiment of a high-sealing valve structure, comprising a valve body 1, a gasket structure 2, and a reinforcing structure 3. The valve body 1 includes a flange 11, and the gasket structure 2 includes a groove 21 and a gasket 22. The outer wall of the flange 11 has a groove 21, and the inner wall of the groove 21 is fixedly connected to the gasket 22. The middle inner wall of the gasket 22 is fixedly connected to a sealing ring 23, which fits against the inner wall of the flange 11. The reinforcing structure 3 includes two fixing rings 31. The left and right sides of the bottom fixing ring 31 are fixedly connected to a fixing plate 34, and the left and right sides of the top fixing ring 31 are fixedly connected to a fixing plate 35. The fixing plate 34 is rotatably connected to a rotating rod 36, and the top of the rotating rod 36 is fixedly connected to a threaded rod 37. The threaded rod 37 is threadedly connected to a hexagonal nut 38, and the bottom of the hexagonal nut 38 is fixedly connected to a limiting seat 39. The bottom end of the limiting seat 39 is engaged with the top of the fixing plate 35.

[0018] Furthermore, the flange 11 is fixed to the flange of the pipe by eight fixing bolts 12. The fixing bolts 12 are evenly distributed in a circumferential array, which can provide a balanced clamping force, ensure that the flange face fits tightly, and effectively prevent media leakage.

[0019] Furthermore, a sealing gasket 33 is fixedly connected to the inner wall of the retaining ring 31. The sealing gasket 33 is U-shaped, and the inner wall of the sealing gasket 33 is attached to the outer wall of the flange 11, so that the sealing gasket 33 can tightly hold the flange 11, increase the contact area, prevent the retaining ring 31 from shifting, and improve the overall stability.

[0020] Furthermore, the top of the hexagonal nut 38 is snapped into the hand-tightening handle 310, and the bottom of the hand-tightening handle 310 is provided with a corresponding slot, so that the hand-tightening handle 310 can be quickly installed and removed, facilitating on-site adjustment and maintenance operations and improving ease of use.

[0021] Furthermore, the 310 hand-tightening handle is a hexagonal handle with an anti-slip coating on the surface, making it easy to tighten by hand. The anti-slip coating increases friction, prevents slipping during operation, and ensures a safe and reliable reinforcement process.

[0022] Furthermore, the limiting seat 39 is a T-shaped cylinder with a circular hole in the middle that is larger than the diameter of the threaded rod 37, so that the limiting seat 39 can stably support the hexagonal nut 38, while allowing the threaded rod 37 to rotate freely, effectively transmitting and maintaining the clamping force.

[0023] Furthermore, four protrusions 32 are fixedly connected to the outer walls of both the front and rear ends of the fixing ring 31. The protrusions 32 have a bevel on the side near the middle. The bevel helps to guide the fixing ring 31 to align with the flange 11 during installation, and makes the force more even, disperses stress, and enhances the resistance to deformation.

[0024] Working principle: During use, when the flange 11 of the valve body 1 and the flange of the pipeline are tightened by the fixing bolts 12, the gasket 22 located in the groove 21 will first be compressed and deformed, filling the microscopic unevenness between the two flange contact surfaces, forming the first sealing barrier. When the medium pressure increases, the pressure will act on the inner side and end face of the sealing ring 23, forcing the sealing ring 23 to expand radially outward, fitting more tightly against the outer wall of the groove 21, preventing the medium from leaking from the outside of the gasket 22. This combines the initial static seal of the gasket 22 and the dynamic self-tightening seal of the sealing ring 23, forming a double insurance, especially suitable for working conditions with large pressure fluctuations or high pressure. The sealing performance increases with the increase of pressure. The two fixing rings 31 are respectively fitted on the upper and lower sides of the flange 11, and the outer wall protrusions 32 squeeze the flange 11 through the inclined surface. The wall allows the two flanges 11 to be inserted into the middle of the retaining ring 31. The edge of the flange 11 is sealed by the sealing gasket 33, forming a jacket covering the outside of the flange. Turning the hand-tightening handle 310 causes the hexagonal nut 38 to rotate, which in turn causes the limiting seat 39 to move downward, so that the limiting seat 39 is engaged with the top of the fixing plate 2 35. When further reinforcement is needed, the hand-tightening handle 310 can be removed, and the hexagonal nut 38 can be turned with a wrench to further reinforce the limiting seat 39. The reinforcement structure 3 can form an integral frame for the external reinforcement, which greatly enhances the rigidity of the flange connection. When the pipeline is subjected to vibration, water hammer impact, or thermal stress caused by temperature changes, this structure can effectively suppress the relative displacement and loosening of the flange 11, fundamentally avoiding the sealing failure caused by loose joints.

[0025] It will be apparent to those skilled in the art that this invention 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 essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-sealing valve structure, comprising a valve body (1), a gasket structure (2), and a reinforcing structure (3), characterized in that: The valve body (1) includes a flange (11), the gasket structure (2) includes a groove (21) and a gasket (22), the outer wall of the flange (11) has a groove (21), the inner wall of the groove (21) is fixedly connected to the gasket (22), the middle inner wall of the gasket (22) is fixedly connected to a sealing ring (23), the sealing ring (23) is attached to the inner wall of the flange (11), the reinforcing structure (3) includes two fixing rings (31), the bottom fixing ring (31) The first fixing plate (34) is fixedly connected to both sides of the top fixing ring (31), and the second fixing plate (35) is fixedly connected to both sides of the top fixing ring (31). The first fixing plate (34) is rotatably connected to the rotating rod (36). The top of the rotating rod (36) is fixedly connected to the threaded rod (37). The threaded rod (37) is threadedly connected to the hexagonal nut (38). The bottom of the hexagonal nut (38) is fixedly connected to the limiting seat (39). The bottom end of the limiting seat (39) is snapped into the top of the second fixing plate (35).

2. The high-sealing valve structure according to claim 1, characterized in that: The flange (11) is fixed to the flange of the pipe by eight fixing bolts (12).

3. The high-sealing valve structure according to claim 1, characterized in that: The inner wall of the fixing ring (31) is fixedly connected to the sealing gasket (33), which is U-shaped, and the inner wall of the sealing gasket (33) is attached to the outer wall of the flange (11).

4. The high-sealing valve structure according to claim 1, characterized in that: The top of the hexagonal nut (38) is engaged with a hand-tightening handle (310), and the bottom of the hand-tightening handle (310) has a corresponding slot.

5. The high-sealing valve structure according to claim 4, characterized in that: The hand-twisting grip (310) is a hexagonal grip with an anti-slip coating on its surface.

6. The high-sealing valve structure according to claim 1, characterized in that: The limiting seat (39) is a T-shaped cylinder, and a circular hole larger than the diameter of the threaded rod (37) is opened in the middle of the limiting seat (39).

7. The high-sealing valve structure according to claim 1, characterized in that: The outer walls of the front and rear ends of the fixed ring (31) are fixedly connected with four protrusions (32), and the protrusions (32) have a sloping surface on the side near the middle.

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