Hard seal ball valve seat

Abstract

The utility model discloses a hard-sealed ball valve seat, which specifically relates to the technical field of ball valves, including a valve body, a valve stem rotatably connected inside the valve body, a ball fixedly connected to the bottom of the valve stem, a hand wheel fixedly connected to the top of the valve stem, mounting grooves at both ends of the valve body, sliding sleeves movably inserted inside the two mounting grooves, fixedly connected to the insides of the two sliding sleeves, inner sleeves movably sleeved inside the two fixed plates, sealing valve seats fixedly connected to the opposite ends of the two inner sleeves, sealing cushion seats installed on the opposite sides of the two sealing valve seats, and extrusion springs movably sleeved outside the two inner sleeves; fixed sleeves movably sleeved at the opposite ends of the two sliding sleeves, mounting plates fixedly connected to the outsides of the two sliding sleeves, and a plurality of connecting bolts rotatably connected inside the two mounting plates. The utility model can realize convenient and quick maintenance and replacement of the sealing cushion seat, thereby ensuring the sealing performance of the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, and more specifically to a hard-sealed ball valve seat. Background Art

[0002] The hard-sealed ball valve is composed of a valve seat, a valve stem, a packing and a ball. In pipeline engineering, it plays a key role in cutting off or connecting the medium and regulating the pressure. It is suitable for high-temperature and high-pressure water, steam, oil and other media, but not for media containing solid particles and fibers. The hard-sealed ball valve is easy to operate, has excellent sealing, long service life and low maintenance cost, and is widely used in industrial pipeline systems. Its sealing performance can prevent medium leakage, protect the environment and production safety.

[0003] After long-term use, the sealing performance of the hard-sealed ball valve may be affected due to the wear between the ball and the valve seat. At the same time, due to the complex structural design of the traditional hard-sealed ball valve, the disassembly and maintenance of the valve seat becomes relatively difficult, which brings certain inconveniences to the staff in terms of maintenance and care. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides a hard-sealed ball valve seat. The technical problem to be solved by the present invention is that the sealing gasket seat of the traditional ball valve is inconvenient to replace and repair.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hard-sealed ball valve seat, comprising a valve body, a valve stem rotatably connected inside the valve body, a ball fixedly connected to the bottom of the valve stem, a hand wheel fixedly connected to the top of the valve stem, mounting grooves are provided at both ends of the valve body, sliding sleeves are movably inserted inside the two mounting grooves, fixed plates are fixedly connected inside the two sliding sleeves, inner sleeves are movably sleeved inside the two fixed plates, sealing valve seats are fixedly connected to opposite ends of the two inner sleeves, sealing pad seats are installed on opposite sides of the two sealing valve seats, and the two sealing pad seats are adapted to the ball, extrusion springs are movably sleeved outside the two inner sleeves, and the two extrusion springs are respectively located between the corresponding sealing valve seats and the fixed plates;

[0006] The ends of the two sliding sleeves that are separated from each other are movably sleeved with fixed sleeves, the exteriors of the two sliding sleeves are fixedly connected with mounting plates, and the interiors of the two mounting plates are rotatably connected with a plurality of connecting bolts.

[0007] like Figure 1-5As shown, the specific implementation method is: the sealing valve seat can be pushed by the extrusion spring, so that the sealing pad seat and the ball fit together, thereby improving the sealing performance of the valve, and the sliding sleeve can be fixed to the two ends of the valve body by the multiple connecting bolts. At the same time, it also makes disassembly more convenient and facilitates the removal of the sealing pad seat, thereby ensuring the sealing performance of the valve.

[0008] In a preferred embodiment, a second sealing ring is fixedly connected to the inside of the mounting groove, a limiting ring is fixedly connected to the outside of the inner sleeve, a first sealing ring is fixedly connected to the side of the limiting ring facing the fixed plate, and a third sealing ring is fixedly connected to the outside of the sliding sleeve, and the third sealing ring is in contact with the inner wall of the fixed sleeve.

[0009] By providing the first sealing ring, the second sealing ring and the third sealing ring, the sealing performance of the valve can be improved to avoid leakage.

[0010] In a preferred embodiment, the ends of the two fixed sleeves facing away from each other are fixedly connected with flanges.

[0011] The provided flange can make the installation of the valve more convenient.

[0012] In a preferred embodiment, the number of the connecting bolts is three, and the three connecting bolts are evenly distributed.

[0013] The three evenly distributed connecting bolts can ensure that the second sealing ring is evenly squeezed, thereby ensuring the sealing performance of the valve.

[0014] In a preferred embodiment, an indicator mark is fixedly connected to the top of the hand wheel, and the indicator mark is parallel to the internal channel of the sphere.

[0015] The indicator mark can be set to facilitate users to identify the opening and closing status of the valve.

[0016] Technical effects and advantages of the utility model:

[0017] The three connecting bolts are removed by rotating them, and then the sliding sleeve is pulled away from the valve body so that the sliding sleeve slides along the fixed sleeve, so that the sealing pad seat can be taken out, and then the sealing pad seat can be easily inspected and replaced, thereby ensuring the sealing performance of the valve. In addition, the whole process is convenient and quick, which reduces the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0020] Figure 3 This is a schematic diagram of the valve body structure of the utility model.

[0021] Figure 4 This is a schematic diagram of the valve body structure of the utility model.

[0022] Figure 5 This is a schematic diagram of the valve body structure of the utility model.

[0023] The accompanying drawings are marked as follows: 1. valve body; 2. ball; 3. valve stem; 4. handwheel; 5. mounting groove; 6. sliding sleeve; 7. fixing plate; 8. inner sleeve; 9. sealing valve seat; 10. sealing pad seat; 11. extrusion spring; 12. limit ring; 13. first sealing ring; 14. second sealing ring; 15. mounting plate; 16. fixing sleeve; 17. third sealing ring; 18. connecting bolt; 19. flange; 20. indicator mark. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a hard-sealed ball valve seat, comprising a valve body 1, wherein a valve stem 3 is rotatably connected inside the valve body 1, a ball 2 is fixedly connected to the bottom of the valve stem 3, a hand wheel 4 is fixedly connected to the top of the valve stem 3, mounting grooves 5 are provided at both ends of the valve body 1, sliding sleeves 6 are movably inserted inside the two mounting grooves 5, a fixing plate 7 is fixedly connected inside the two sliding sleeves 6, inner sleeves 8 are movably sleeved inside the two fixing plates 7, sealing valve seats 9 are fixedly connected to opposite ends of the two inner sleeves 8, sealing pad seats 10 are installed on opposite sides of the two sealing valve seats 9, and the two sealing pad seats 10 are adapted to the ball 2, extrusion springs 11 are movably sleeved outside the two inner sleeves 8, and the two extrusion springs 11 are respectively located between the corresponding sealing valve seats 9 and the fixing plates 7;

[0026] The two sliding sleeves 6 have fixed sleeves 16 movably sleeved at their opposite ends. The outsides of the two sliding sleeves 6 are fixedly connected to mounting plates 15 . The insides of the two mounting plates 15 are rotatably connected to a plurality of connecting bolts 18 .

[0027] like Figure 1-5As shown, the specific implementation is: the sealing valve seat 9 can be pushed by the extrusion spring 11, so that the sealing pad seat 10 fits with the ball 2, thereby improving the sealing performance of the valve, and the sliding sleeve 6 can be fixed to the two ends of the valve body 1 by the multiple connecting bolts 18. At the same time, it also makes disassembly more convenient, and it is easy to take out the sealing pad seat 10, thereby ensuring the sealing performance of the valve.

[0028] A second sealing ring 14 is fixedly connected to the inside of the mounting groove 5, a limiting ring 12 is fixedly connected to the outside of the inner sleeve 8, a first sealing ring 13 is fixedly connected to the side of the limiting ring 12 facing the fixed plate 7, and a third sealing ring 17 is fixedly connected to the outside of the sliding sleeve 6, and the third sealing ring 17 is in contact with the inner wall of the fixed sleeve 16.

[0029] like Figure 2-3 As shown, the specific implementation is: by providing the first sealing ring 13, the second sealing ring 14 and the third sealing ring 17, the sealing performance of the valve can be improved to avoid leakage.

[0030] The ends of the two fixed sleeves 16 that are separated from each other are fixedly connected with flanges 19 .

[0031] like Figure 1-2 As shown, the specific implementation is: the flange 19 is provided to make the installation of the valve more convenient.

[0032] The number of the connecting bolts 18 is three, and the three connecting bolts 18 are evenly distributed.

[0033] like Figure 1-2 As shown, the specific implementation is: the second sealing ring 14 can be uniformly squeezed by three evenly distributed connecting bolts 18, thereby ensuring the sealing of the valve.

[0034] An indicator mark 20 is fixedly connected to the top of the hand wheel 4 , and the indicator mark 20 is parallel to the internal channel of the sphere 2 .

[0035] like Figure 1-3 As shown, the specific implementation is: the indicator mark 20 can be set to facilitate the user to distinguish the opening and closing status of the valve.

[0036] Working principle of this utility model:

[0037] When the sealing pad seat 10 needs to be inspected and replaced, first remove the three connecting bolts 18 by rotating them, and then pull the sliding sleeve 6 away from the valve body 1, so that the sliding sleeve 6 slides along the fixed sleeve 16, so that the sealing pad seat 10 can be taken out, and then the sealing pad seat 10 can be easily inspected and replaced, thereby ensuring the sealing performance of the valve. In addition, the whole process is convenient and quick, which reduces the workload of the staff.

[0038] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0039] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0040] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A hard-sealed ball valve seat, comprising a valve body (1), characterized in that: The valve body (1) is rotatably connected to a valve stem (3) inside, the bottom of the valve stem (3) is fixedly connected to a ball (2), the top of the valve stem (3) is fixedly connected to a hand wheel (4), both ends of the valve body (1) are provided with mounting grooves (5), the insides of the two mounting grooves (5) are movably inserted with sliding sleeves (6), the insides of the two sliding sleeves (6) are fixedly connected to a fixing plate (7), the insides of the two fixing plates (7) are movably sleeved with inner sleeves (8), the opposite ends of the two inner sleeves (8) are fixedly connected to sealing valve seats (9), the opposite sides of the two sealing valve seats (9) are installed with sealing pad seats (10), and the two sealing pad seats (10) are compatible with the ball (2), the outsides of the two inner sleeves (8) are movably sleeved with extrusion springs (11), and the two extrusion springs (11) are respectively located between the corresponding sealing valve seats (9) and the fixing plates (7); The ends of the two sliding sleeves (6) that are separated from each other are movably sleeved with a fixed sleeve (16), the outsides of the two sliding sleeves (6) are fixedly connected with a mounting plate (15), and the insides of the two mounting plates (15) are rotatably connected with a plurality of connecting bolts (18).

2. The hard sealing ball valve seat according to claim 1, characterized in that: A second sealing ring (14) is fixedly connected to the interior of the mounting groove (5), a limiting ring (12) is fixedly connected to the exterior of the inner sleeve (8), a first sealing ring (13) is fixedly connected to the side of the limiting ring (12) facing the fixed plate (7), and a third sealing ring (17) is fixedly connected to the exterior of the sliding sleeve (6), and the third sealing ring (17) is in contact with the inner wall of the fixed sleeve (16).

3. The hard sealing ball valve seat according to claim 1, characterized in that: The two ends of the two fixed sleeves (16) that are separated from each other are both fixedly connected with flanges (19).

4. The hard sealing ball valve seat according to claim 1, characterized in that: The number of the connecting bolts (18) is three, and the three connecting bolts (18) are evenly distributed.

5. The hard sealing ball valve seat according to claim 1, characterized in that: An indicator mark (20) is fixedly connected to the top of the hand wheel (4), and the indicator mark (20) is parallel to the internal channel of the sphere (2).

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