Ball valve device with anti-drop lining fixing assembly

Abstract

This utility model discloses a ball valve device with an anti-detachment liner fixing component, specifically relating to the field of ball valve technology. It includes a valve body, a valve stem rotatably connected inside the valve body, a valve handle fixedly connected to the top of the valve stem, a ball valve fixedly connected to the bottom of the valve stem, a liner fixedly connected inside the valve body, a fixing component installed on the outside of the valve body, and a sealing mechanism installed inside the valve body. The fixing component includes two first fixing discs, which are slidably connected to the outside of the valve body. A bidirectional screw is threadedly connected inside the first fixing disc, a turntable is fixedly connected to one end of the bidirectional screw, and two second fixing discs are rotatably connected to the outside of the bidirectional screw. This utility model, by setting up the fixing component and the sealing mechanism, can tightly fix the liner to the inner wall of the valve body, effectively reducing loosening or detachment under medium pressure and vibration impact, while improving the sealing performance of the ball valve and effectively reducing the risk of medium leakage.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and more specifically, to a ball valve device with an anti-fall-off lining fixing component. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the valve axis. It can also be used for fluid regulation and control. Among them, the hard-seal V-type ball valve has a strong shearing force between the V-shaped ball core and the metal valve seat with hard alloy overlay, making it particularly suitable for media containing fibers, small solid particles, etc. Lined ball valves are a type of on / off valve used to achieve opening and closing in highly corrosive media.

[0003] When the mating point between the valve stem liner and the L-shaped sealing ring becomes clogged due to wear and the entry of media or other particles, the valve stem will still seize up. In this case, it is necessary to increase the torque to rotate the valve stem, which will cause greater damage and wear to the valve stem liner. Over a long period of switching wear, the valve stem liner will eventually be penetrated, causing internal leakage in the ball valve. Moreover, long-term switching wear will also cause the L-shaped sealing ring to be completely worn, which will eventually cause the valve body bushing to wear and cause external leakage.

[0004] A search revealed that Chinese patent CN220870129U discloses a high-wear-resistant lined ball valve. A bearing is provided on the outer periphery of the valve stem to achieve a rotatable connection with the bushing. The bearing is located in the section of the valve stem covered with a rubber lining. The bearing and the bushing of the valve body form a first set of rotatable friction pairs, and the bearing and the rubber lining of the valve stem form a second set of rotatable friction pairs. The two sets of friction pairs work together to reduce the frictional torque at the valve stem and slow down the wear caused by rotatable friction between the bushing of the valve body and the rubber lining of the valve stem.

[0005] In actual use, the above-mentioned high wear-resistant lined ball valve will experience scouring of the lining during fluid transportation. Under impact, the lining is prone to falling off. The falling off or loosening of the lining will damage the original sealing structure of the valve, leading to media leakage and thus affecting the sealing performance of the valve. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a ball valve device with an anti-fall-off lining fixing component to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A ball valve device with an anti-detachment liner fixing component includes a valve body, a valve stem rotatably connected inside the valve body, a valve handle fixedly connected to the top end of the valve stem, a ball valve fixedly connected to the bottom end of the valve stem, a liner fixedly connected inside the valve body, a fixing component installed on the outside of the valve body, and a sealing mechanism installed inside the valve body.

[0009] The fixing assembly includes two first fixing discs, which are slidably connected to the outer side of the valve body. A bidirectional screw is threaded inside the first fixing disc, and a turntable is fixedly connected to one end of the bidirectional screw. Two second fixing discs are rotatably connected to the outer side of the bidirectional screw, and the second fixing discs are fixedly connected to the outer side of the valve body. A guide post is slidably connected inside the first fixing disc, and both ends of the guide post are fixedly connected to the first fixing disc. Multiple second fixing discs are hinged inside the first fixing disc. A hinge support is hinged to one end of the push rod, and a slide rod is fixedly connected to one side of the hinge support. Slider blocks are fixedly connected to both sides of the slide rod, and the slide rod and slider blocks are slidably connected to the inside of the first fixing disc. A fixing ring is fixedly connected to one end of the slide rod, and the fixing rings are distributed in a ring array inside the first fixing disc.

[0010] By adopting the above technical solution, the lining can be tightly fixed to the inner wall of the valve body, so that the lining and the valve body can maintain a good contact state.

[0011] As a further description of the above technical solution: the sealing mechanism includes two valve seats, which are fixedly connected to the inside of the valve body. A sealing ring is fixedly connected to the inner side of the valve seat. The inner side of the sealing ring is adapted to the outer arc surface of the ball valve. The sealing ring is made of polytetrafluoroethylene. A rubber strip is fixedly connected to one side of the valve seat. The rubber strip is made of silicone rubber.

[0012] By adopting the above technical solutions, the sealing performance inside the valve body can be improved, which can effectively reduce media leakage.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. By setting up a fixing component, compared with the existing technology, multiple fixing rings and support rings can be used to clamp the lining inside and outside the lining in an annular manner, which can tightly fix the lining to the inner wall of the valve body, effectively reducing loosening or falling off under the pressure of the medium and vibration impact, so that the valve body can maintain good sealing performance and reduce the risk of leakage.

[0015] 2. By setting up a sealing mechanism, compared with the existing technology, the sealing ring and rubber strip can tightly fit the gap between the ball valve and the valve seat, forming a reliable sealing barrier, which can effectively reduce the risk of media leakage, and has good wear resistance and corrosion resistance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the rear structure of the valve body of this utility model.

[0018] Figure 3 This is a schematic diagram of the left side structure of the valve body of this utility model.

[0019] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the valve body of this utility model.

[0020] Figure 5 This is a partial structural diagram of the connection between the slide rod and the fixing ring of this utility model.

[0021] Figure 6 This is a cross-sectional view of the second fixed disk of this utility model.

[0022] The attached figures are labeled as follows: 1. Valve body; 2. Valve stem; 3. Valve handle; 4. Ball valve; 5. Liner; 6. Fixed rod; 7. Support ring; 8. First fixed plate; 9. Bidirectional screw; 10. Turntable; 11. Second fixed plate; 12. Guide post; 13. Push rod; 14. Hinge support; 15. Slide rod; 16. Slider; 17. Fixed ring; 18. Valve seat; 19. Sealing ring; 20. Rubber strip. Detailed Implementation

[0023] 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.

[0024] The embodiments disclosed in this application are as follows: Figure 1-6 The ball valve device shown includes a liner fixing component to prevent detachment, comprising a valve body 1, a valve stem 2 rotatably connected inside the valve body 1, a valve handle 3 fixedly connected to the top of the valve stem 2, a ball valve 4 fixedly connected to the bottom of the valve stem 2, a liner 5 fixedly connected inside the valve body 1, a fixing component installed on the outside of the valve body 1, and a sealing mechanism installed inside the valve body 1.

[0025] The fixing assembly includes two first fixing discs 8, which are slidably connected to the outer side of the valve body 1. A bidirectional screw 9 is threaded inside the first fixing disc 8, and a turntable 10 is fixedly connected to one end of each bidirectional screw 9. Two second fixing discs 11 are rotatably connected to the outer side of the bidirectional screw 9 and are fixedly connected to the outer side of the valve body 1. A guide post 12 is slidably connected inside the first fixing disc 8, and both ends of the guide post 12 are fixedly connected to the first fixing disc 8. Multiple push rods 13 are hinged inside the first fixing disc 8, and a hinge support 14 is hinged to one end of each push rod 13. A slide rod 15 is fixedly connected to one side of the hinge support 14, and sliders 16 are fixedly connected to both sides of the slide rod 15. Both the slide rod 15 and the sliders 16 are connected to the inner side of the first fixing disc 8. The sliding connection is as follows: one end of the slide rod 15 is fixedly connected to a fixing ring 17. The fixing rings 17 are arranged in a ring array on the inner side of the first fixing plate 8. The fixing rod 6 and the support ring 7 can provide good support on the inner side of the lining 5. At the same time, multiple slide rods 15 and sliders 16 slide on the inner side of the first fixing plate 8, so that multiple slide rods 15 can drive the fixing rings 17 to perform ring clamping on the outer side of the lining 5 and cooperate with multiple support rings 7. When clamping, the fixing rings 17 are supported by the support rings 7, so that the lining 5 can be clamped inside and outside, which can tightly fix the lining 5 to the inner wall of the valve body 1. This can reduce the loosening and falling off of the lining 5 caused by the medium scouring, so that the valve body 1 can maintain good sealing performance.

[0026] Reference Figure 4 As shown, the sealing mechanism includes two valve seats 18, which are fixedly connected to the inside of the valve body 1. A sealing ring 19 is fixedly connected to the inside of the valve seat 18. The inside of the sealing ring 19 is adapted to the outer arc surface of the ball valve 4. The sealing ring 19 is made of polytetrafluoroethylene. A rubber strip 20 is fixedly connected to one side of the valve seat 18. The rubber strip 20 is made of silicone rubber. The sealing ring 19 and the rubber strip 20 can tightly seal the gap between the ball valve 4 and the valve seat 18, forming an effective seal and effectively reducing the leakage of the medium from the gap between the valve seat 18 and the ball valve 4.

[0027] Working principle of this utility model: This utility model designs a ball valve device with an anti-detachment lining fixing component, the specific structure of which is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation between various structures, when it is necessary to fix the lining 5, firstly, two support rings 7 are placed vertically inside the lining 5. The support rings 7 can be supported by the fixing rod 6, so that multiple support rings 7 can fit and support the lining 5 inside the valve body 1. Then, the turntable 10 is rotated, which can drive the second fixed plate 11 to rotate. The threads on the opposite side of the second fixed plate 11 can drive the two first fixed plates 8 to move in opposite directions. The guide post 12 can provide guidance for the movement of the two first fixed plates 8. The push rod 13 is hinged to the first fixed plate 8 and the hinge support 14 at both ends, so that when the first fixed plate 8 moves, it can drive multiple push rods 13 to push the hinge support. 14, so that the hinge support 14 can drive the slide rod 15 and the slider 16 to slide inside the second fixed plate 11. The sliding groove inside the first fixed plate 8 can provide a guiding function for the slide rod 15, so that multiple fixing rings 17 can be clamped in annularly on the outside of the lining 5, and supported by multiple support rings 7 and fixing rods 6 on the inside of the lining 5, so that the fixing rings 17 and support rings 7 can be clamped and fixed inside and outside the lining 5, thereby effectively preventing the lining 5 from falling off. When the valve body 1 is not used for sealing, the inner side of the sealing ring 19 is adapted to the outer arc surface of the ball valve 4, which can improve the sealing between the ball valve 4 and the valve seat 18. The elasticity of the two rubber strips 20 can rebound and fit against the outside of the ball valve 4, which is beneficial to increase the sealing of the outside of the ball valve 4.

[0028] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures and will not be described here.

[0030] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ball valve device with an anti-detachment liner fixing component, comprising a valve body (1), characterized in that: The valve body (1) is rotatably connected to a valve stem (2), the top of the valve stem (2) is fixedly connected to a valve handle (3), the bottom of the valve stem (2) is fixedly connected to a ball valve (4), the valve body (1) is fixedly connected to a liner (5), the valve body (1) is mounted on a fixing component, and the valve body (1) is mounted on a sealing mechanism. The fixing assembly includes two first fixing discs (8), which are slidably connected to the outside of the valve body (1). The first fixing disc (8) is internally threaded with a bidirectional screw (9), and one end of the bidirectional screw (9) is fixedly connected to a turntable (10). The outside of the bidirectional screw (9) is rotatably connected to two second fixing discs (11), which are fixedly connected to the outside of the valve body (1).

2. The ball valve device with an anti-detachment liner fixing component according to claim 1, characterized in that: The first fixed disk (8) has a guide post (12) slidably connected inside, and the two ends of the guide post (12) are respectively fixedly connected to the first fixed disk (8).

3. The ball valve device with an anti-detachment liner fixing component according to claim 1, characterized in that: The first fixed plate (8) has multiple push rods (13) hinged inside. One end of each push rod (13) is hinged to a hinge support (14), and a slide rod (15) is fixedly connected to one side of the hinge support (14).

4. The ball valve device with an anti-detachment liner fixing component according to claim 3, characterized in that: Both sides of the slide rod (15) are fixedly connected to sliders (16), and both the slide rod (15) and the sliders (16) are slidably connected to the inside of the first fixed plate (8).

5. The ball valve device with an anti-detachment liner fixing component according to claim 3, characterized in that: One end of the slide bar (15) is fixedly connected to a fixing ring (17), and the fixing ring (17) is distributed in a ring array with the inner side of the first fixing plate (8).

6. The ball valve device with an anti-detachment liner fixing component according to claim 1, characterized in that: The sealing mechanism includes two valve seats (18), which are fixedly connected to the inside of the valve body (1).

7. The ball valve device with an anti-detachment liner fixing component according to claim 1, characterized in that: A sealing ring (19) is fixedly connected to the inner side of the valve seat (18). The inner side of the sealing ring (19) is adapted to the outer arc surface of the ball valve (4). The sealing ring (19) is made of polytetrafluoroethylene. A rubber strip (20) is fixedly connected to one side of the valve seat (18). The rubber strip (20) is made of silicone rubber.

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