A bidirectional releasable seal valve

Abstract

The utility model discloses a two -way detachable sealing valve relates to self -sealing valve technical field, including valve seat, the liquid inlet is set up in the valve seat top, the liquid outlet is fixedly installed below valve seat outside, the flange structure is fixedly installed outside all in the liquid inlet and liquid outlet, two the flange structure outside respectively installs liquid inlet pipe and liquid outlet pipe, the valve core is slidably installed in the valve seat, the valve core top rotatory installation valve shaft, valve shaft penetrates valve seat, valve shaft outside fixedly installs valve handle, the self -sealing assembly is fixedly installed in the valve seat inner wall, the self -sealing assembly one end is connected with valve shaft, the self -sealing assembly other end fixedly connected valve core, the utility model can avoid fastening bolt loose, improve the sealing stability of valve seat, along with the increase of pressure, self -adaptation improves its sealing, avoids liquid overflow.

Description

Technical Field

[0001] This utility model belongs to the field of self-sealing valves, specifically relating to a bidirectional detachable sealing valve. Background Technology

[0002] Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Valves are also classified according to their materials, such as cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, and non-standard customized valves. With the advancement of valve technology, bidirectional self-sealing valves have gained widespread attention due to their excellent sealing performance and are widely used in industrial production.

[0003] Existing bidirectional valves are installed and fixed using flange connections for easy disassembly. However, the flanges are used for connection and fixation at the pipe joints. Under long-term high pressure, the flange bolts loosen, affecting the sealing performance. Furthermore, due to the high sealing performance, the pressure at the valve shaft is relatively high during valve opening, which can easily lead to leakage.

[0004] Therefore, we propose a bidirectional detachable sealing valve. Utility Model Content

[0005] This invention provides a bidirectional detachable sealing valve to solve the technical problems mentioned in the background section.

[0006] To solve the above-mentioned technical problems, this utility model provides a bidirectional detachable sealing valve, including a valve seat, an inlet port on the top of the valve seat, an outlet port fixedly installed on the lower outer side of the valve seat, flange structures fixedly installed on the outer sides of both the inlet and outlet ports, an inlet pipe and a drain pipe respectively installed on the outer sides of the two flange structures, a valve core slidably installed inside the valve seat, a valve shaft rotatably installed above the valve core, the valve shaft passing through the valve seat, a valve handle fixedly installed on the outer side of the valve shaft, a self-sealing component fixedly installed on the inner wall of the valve seat, one end of the self-sealing component engaging with the valve shaft, the other end of the self-sealing component fixedly connected to the valve core, and a sealing seat fixedly installed on the top of the valve seat.

[0007] Preferably, the self-sealing assembly includes a steering seat, and two steering seats are provided. The two steering seats are symmetrically arranged along the valve axis and are fixedly connected to the inner wall of the valve seat. The steering seat is L-shaped and has an inner cavity on its inner side. A piston is slidably installed below the inner cavity, a connecting rod is fixedly installed on the outer side of the piston, and a piston is movably installed above the inner cavity. A scraper ring is fixedly installed on the outer side of the piston.

[0008] Preferably, the scraper ring is semi-circular, made of silicone, and has internal threads machined on its inner wall.

[0009] Preferably, the valve shaft includes a threaded rod, a push rod, and a rotating shaft. The threaded rod is fixedly installed on the top of the rotating shaft, the push rod is fixedly installed on the top of the threaded rod, the valve handle is fixedly connected above the push rod, a threaded through hole is opened above the valve seat, the threaded rod is engaged with the valve seat, and the valve core is rotatably connected below the rotating shaft.

[0010] Preferably, the flange structure includes flange one and flange two. Flange one is fixedly installed on the outside of both the liquid inlet and the liquid outlet. Flange two is fixedly installed on the liquid inlet pipe and the liquid outlet pipe at positions corresponding to flange one. Both flange one and flange two have threaded holes on their surfaces. Multiple threaded holes are provided and are arranged at equal intervals. Fastening bolts are provided in the threaded holes.

[0011] Preferably, a self-locking nut is fitted onto the fastening bolt, the self-locking nut engages with the fastening bolt, and the engagement direction of the self-locking nut is opposite to that of the fastening bolt.

[0012] Preferably, the sealing seat includes a sleeve, the sleeve is fixedly installed on the top of the valve seat, a sealing hole is opened on the top of the sleeve, the push rod passes through the sealing hole, and a sealing gasket is provided in the sealing hole.

[0013] Preferably, the sealing gasket is made of silicone, and a groove is provided on the outer side of the sealing gasket, which engages with the inner wall of the sealing hole, and the top rod is fitted with the sealing gasket.

[0014] This invention has the following advantages over the prior art: 1. This utility model discloses a bidirectional detachable sealing valve. During installation, the self-locking nut is tightened and moved to the top of the fastening bolt. The flanges on the outside of the inlet and outlet pipes are aligned with the flange on the outside of the valve seat, so that their threaded holes coincide. The fastening bolt is then tightened into the threaded holes and fully engaged, which fixes the inlet and outlet pipes to the valve seat. The self-locking nut between the flange and the fastening bolt improves the sealing performance between the fastening bolt and the threaded hole. Furthermore, the self-locking nut's engagement direction is opposite to that of the fastening bolt, preventing the fastening bolt from loosening and improving the sealing stability of the valve seat. The valve is simple to install, easy to disassemble, and has a stronger sealing performance.

[0015] 2. This utility model discloses a bidirectional detachable sealing valve. By setting a self-sealing component, when the channel needs to be opened, the valve handle is rotated, which drives the threaded rod to rotate. The threaded rod drives the rotating shaft to rise, which in turn causes the rotating shaft to pull the valve core to rise. At this time, the pressure at the connection between the threaded rod and the valve seat is relatively large. The rise of the valve core drives the connecting rod to rise, and the connecting rod pushes the piston one to slide in the inner cavity, which increases the pressure in the inner cavity, thereby pushing the piston two to move. The piston two pushes the scraper ring to clamp the threaded rod. Since the scraper ring is made of silicone, it can effectively improve the sealing performance at the connection between the threaded rod and the valve seat. At the same time, the scraper ring has internal threads machined on the inner side, which can scrape off the liquid on the threaded rod and prevent liquid leakage.

[0016] 3. The present invention provides a bidirectional detachable sealing valve, which is equipped with a sealing seat, and a sealing gasket is snapped into the top of the sealing seat. The sealing gasket is fitted with the push rod and is made of silicone. During the up and down sliding of the push rod, the sealing gasket can further provide a seal to the valve seat. At the same time, the sealing gasket can scrape the push rod to prevent internal liquid from overflowing. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a bidirectional detachable sealing valve according to the present invention; Figure 2 This is a cross-sectional view of the valve seat in a bidirectional detachable sealing valve according to the present invention. Figure 3 This is a structural diagram of the flange structure in a bidirectional detachable sealing valve according to this utility model; Figure 4 This is a structural diagram of the self-sealing component in a bidirectional detachable sealing valve according to this utility model.

[0018] The following are the labels in the diagram: 1. Valve seat; 2. Inlet pipe; 3. Valve handle; 4. Valve shaft; 5. Flange structure; 6. Drain pipe; 7. Threaded rod; 8. Rotary shaft; 9. Self-sealing assembly; 10. Valve core; 11. Flange 1; 12. Threaded hole; 13. Flange 2; 14. Fastening bolt; 15. Self-locking nut; 16. Connecting rod; 17. Piston 1; 18. Steering seat; 19. Inner cavity; 20. Piston 2; 21. Scraper ring; 22. Sealing seat; 23. Push rod; 24. Sleeve; 25. Sealing gasket. Detailed Implementation

[0019] Example 1, please refer to Figure 1-4This utility model provides a technical solution: a bidirectional detachable sealing valve, including a valve seat 1, an inlet port on the top of the valve seat 1, and an outlet port fixedly installed on the lower outer side of the valve seat 1. Flange structures 5 are fixedly installed on the outer sides of both the inlet and outlet ports. An inlet pipe 2 and a drain pipe 6 are respectively installed on the outer sides of the two flange structures 5. A valve core 10 is slidably installed inside the valve seat 1, and a valve shaft 4 is rotatably installed above the valve core 10, passing through the valve seat 1. A valve handle 3 is fixedly installed on the outer side of the valve shaft 4. A self-sealing assembly 9 is fixedly installed on the inner wall of the valve seat 1, with one end of the self-sealing assembly 9 engaging with the valve shaft 4 and the other end fixedly connected to the valve core 10. A sealing seat 22 is fixedly installed on the top of the valve seat 1. The self-sealing assembly 9 includes two steering seats 18. The valve shaft 4 is symmetrically arranged, and the steering seat 18 is fixedly connected to the inner wall of the valve seat 1. The steering seat 18 is L-shaped, and an inner cavity 19 is opened on the inner side of the steering seat 18. A piston 17 is slidably installed below the inner cavity 19. A connecting rod 16 is fixedly installed on the outer side of the piston 17. A piston 20 is movably installed above the inner cavity 19. A scraper ring 21 is fixedly installed on the outer side of the piston 20. The scraper ring 21 is semi-circular and made of silicone. The inner wall of the scraper ring 21 is machined with internal threads. The valve shaft 4 includes a threaded rod 7, a push rod 23 and a rotating shaft 8. The threaded rod 7 is fixedly installed on the top of the rotating shaft 8. The push rod 23 is fixedly installed on the top of the threaded rod 7. The valve handle 3 is fixedly connected above the push rod 23. A threaded through hole is opened above the valve seat 1. The threaded rod 7 is meshed with the valve seat 1. The valve core 10 is rotatably connected below the rotating shaft 8.

[0020] In this embodiment, by setting the self-sealing component 9, when the channel needs to be opened, the valve handle 3 is rotated, the valve handle 3 drives the threaded rod 7 to rotate, the threaded rod 7 drives the rotating shaft 8 to rise, and then the rotating shaft 8 pulls the valve core 10 to rise. At this time, the pressure at the connection between the threaded rod 7 and the valve seat 1 is relatively large. The rise of the valve core 10 drives the connecting rod 16 to rise. The connecting rod 16 pushes the piston 17 to slide in the inner cavity 19, which increases the pressure in the inner cavity 19, thereby pushing the piston 20 to move. The piston 20 pushes the scraper ring 21 to clamp the threaded rod 7. Since the scraper ring 21 is made of silicone, it can effectively improve the sealing performance at the connection between the threaded rod 7 and the valve seat 1. At the same time, the scraper ring 21 has internal threads machined on its inner side, which can scrape off the liquid on the threaded rod 7 and prevent liquid leakage.

[0021] Example 2, further, based on Example 1, this utility model provides a solution: the flange structure 5 includes flange 11 and flange 2 13. Flange 11 is fixedly installed on the outside of both the liquid inlet and the liquid outlet. Flange 2 and flange 2 13 are fixedly installed at positions corresponding to flange 11. Threaded holes 12 are provided on the surfaces of flange 11 and flange 2 13. Multiple threaded holes 12 are provided and are equidistantly arranged. Fastening bolts 14 are provided in the threaded holes 12.

[0022] Furthermore, a self-locking nut 15 is fitted onto the fastening bolt 14, and the self-locking nut 15 engages with the fastening bolt 14, with the engagement direction of the self-locking nut 15 being opposite to that of the fastening bolt 14.

[0023] In this embodiment, during installation, the self-locking nut 15 is tightened and moved to the top of the fastening bolt 14. The flange 13 on the outside of the inlet pipe 2 and the outlet pipe 6 is aligned with the flange 11 on the outside of the valve seat 1, so that their threaded holes 12 overlap. The fastening bolt 14 is tightened into the threaded hole 12 and fully engaged, which can fix the inlet pipe 2 and the outlet pipe 6 on the valve seat 1. The self-locking nut 15 is provided between the flange 13 and the fastening bolt 14. On the one hand, it can improve the sealing between the fastening bolt 14 and the threaded hole 12. On the other hand, the engagement direction of the self-locking nut 15 is opposite to the engagement direction of the fastening bolt 14, which can prevent the fastening bolt 14 from loosening and improve the sealing stability of the valve seat 1.

[0024] In embodiment 3, the sealing seat 22 further includes a sleeve 24, the sleeve 24 is fixedly installed on the top of the valve seat, the top of the sleeve 24 has a sealing hole, the push rod 23 passes through the sealing hole, the sealing hole has a sealing gasket 25, the sealing gasket 25 is made of silicone, and the outer side of the sealing gasket 25 has a groove, the groove is engaged with the inner wall of the sealing hole, and the push rod 23 and the sealing gasket 25 are transitionally fitted.

[0025] In this embodiment, a sealing seat 22 is provided, and a sealing gasket 25 is snapped onto the top of the sealing seat 22. The sealing gasket 25 is in transition fit with the push rod 23. The sealing gasket 25 is made of silicone. During the up-and-down sliding of the push rod 23, the sealing gasket 25 can further provide sealing to the valve seat. At the same time, the sealing gasket 25 can scrape the push rod 23 to prevent internal liquid from overflowing.

[0026] Working principle: During installation, tighten the self-locking nut 15 until it reaches the top of the fastening bolt 14. Align the flange 13 on the outside of the inlet pipe 2 and the outlet pipe 6 with the flange 11 on the outside of the valve seat 1, ensuring their threaded holes 12 overlap. Tighten the fastening bolt 14 into the threaded hole 12 and ensure it is fully engaged. This fixes the inlet pipe 2 and the outlet pipe 6 to the valve seat 1. The self-locking nut 15 between the flange 13 and the fastening bolt 14 improves the sealing between the fastening bolt 14 and the threaded hole 12. Furthermore, the self-locking nut 15 engages in the opposite direction to the fastening bolt 14, preventing it from loosening and improving the sealing stability of the valve seat 1. By using the self-sealing component 9, when the passage needs to be opened, rotate the valve handle 3. The valve handle 3 drives the threaded rod 7 to rotate, which in turn drives the rotating shaft 8 to rise, thus pulling the rotating shaft 8. As the valve core 10 rises, the pressure at the connection between the threaded rod 7 and the valve seat 1 is relatively high. The rise of the valve core 10 drives the connecting rod 16 to rise, and the connecting rod 16 pushes the piston 17 to slide in the inner cavity 19, which increases the pressure in the inner cavity 19, thereby pushing the piston 20 to move. The piston 20 pushes the scraper ring 21 to clamp the threaded rod 7. Since the scraper ring 21 is made of silicone, it can effectively improve the sealing at the connection between the threaded rod 7 and the valve seat 1. At the same time, the scraper ring 21 has internal threads on its inner side, which can scrape off the liquid on the threaded rod 7 to prevent liquid leakage. By setting a sealing seat 22, a sealing gasket 25 is installed on the top of the sealing seat 22, and the sealing gasket 25 is transitionally fitted with the push rod 23. The sealing gasket 25 is made of silicone. During the up and down sliding of the push rod 23, the sealing gasket 25 can further provide sealing for the valve seat. At the same time, the sealing gasket 25 can scrape off the liquid from the push rod 23 to prevent internal liquid from overflowing.

Claims

1. A bidirectional detachable sealing valve, comprising a valve seat (1), characterized in that: The valve seat (1) has an inlet port on its upper part and an outlet port fixedly installed on the lower outer side of the valve seat (1). Flange structures (5) are fixedly installed on the outer sides of both the inlet and outlet ports. An inlet pipe (2) and a drain pipe (6) are respectively installed on the outer sides of the two flange structures (5). A valve core (10) is slidably installed inside the valve seat (1). A valve shaft (4) is rotatably installed on the upper part of the valve core (10). The valve shaft (4) passes through the valve seat (1). A valve handle (3) is fixedly installed on the outer side of the valve shaft (4). A self-sealing assembly (9) is fixedly installed on the inner wall of the valve seat (1). One end of the self-sealing assembly (9) is snapped into the valve shaft (4). The other end of the self-sealing assembly (9) is fixedly connected to the valve core (10). A sealing seat is fixedly installed on the top of the valve seat.

2. The bidirectional detachable sealing valve according to claim 1, characterized in that, The self-sealing assembly (9) includes a steering seat (18), two steering seats (18) are provided, the two steering seats (18) are symmetrically arranged along the valve shaft (4), and the steering seats (18) are fixedly connected to the inner wall of the valve seat (1). The steering seats (18) are L-shaped, and an inner cavity (19) is opened on the inner side of the steering seat (18). A piston (17) is slidably installed below the inner cavity (19), a connecting rod (16) is fixedly installed on the outer side of the piston (17), and a piston (20) is movably installed above the inner cavity (19). A scraper ring (21) is fixedly installed on the outer side of the piston (20).

3. A bidirectional detachable sealing valve according to claim 2, characterized in that, The scraper ring (21) is semi-circular, made of silicone, and has internal threads on its inner wall.

4. A bidirectional detachable sealing valve according to claim 1, characterized in that, The valve shaft (4) includes a threaded rod (7), a push rod (23) and a rotating shaft (8). The threaded rod (7) is fixedly installed on the top of the rotating shaft (8). The push rod (23) is fixedly installed on the top of the threaded rod (7). The valve handle (3) is fixedly connected above the push rod (23). A threaded through hole is opened above the valve seat (1). The threaded rod (7) is meshed with the valve seat (1). The valve core (10) is rotatably connected below the rotating shaft (8).

5. A bidirectional detachable sealing valve according to claim 1, characterized in that, The flange structure (5) includes flange one (11) and flange two (13). Flange one (11) is fixedly installed on the outside of the liquid inlet and the liquid outlet. Flange two (13) is fixedly installed on the liquid inlet pipe (2) and the liquid outlet pipe (6) at the corresponding positions of flange one (11). Threaded holes (12) are provided on the surfaces of flange one (11) and flange two (13). There are multiple threaded holes (12), and the multiple threaded holes (12) are arranged at equal intervals. Fastening bolts (14) are provided in the threaded holes (12).

6. A bidirectional detachable sealing valve according to claim 5, characterized in that, A self-locking nut (15) is fitted on the fastening bolt (14). The self-locking nut (15) engages with the fastening bolt (14), and the engagement direction of the self-locking nut (15) is opposite to that of the fastening bolt (14).

7. A bidirectional detachable sealing valve according to claim 4, characterized in that, The sealing seat (22) includes a sleeve (24), the top of the valve seat is fixedly installed with the sleeve (24), the top of the sleeve (24) is provided with a sealing hole, the top rod (23) passes through the sealing hole, and a sealing gasket (25) is provided in the sealing hole.

8. A bidirectional detachable sealing valve according to claim 7, characterized in that, The sealing gasket (25) is made of silicone, and a slot is provided on the outer side of the sealing gasket (25). The slot is engaged with the inner wall of the sealing hole, and the top rod (23) is in transition fit with the sealing gasket (25).

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