A ball valve dismounting tool

Abstract

The utility model belongs to the technical field of auxiliary tools for valves, and relates to a ball valve dismounting tool, which comprises a pull rod, a slotted nut, an expansion sleeve, a poking pin, an expansion core, a fixing pin and a fixing rod. The pull rod is provided with an upper pin hole matched with the poking pin and a lower pin hole matched with the fixing pin in a distributed manner from top to bottom. The poking pin and the fixing pin can rotate after being inserted into the upper pin hole and the lower pin hole. The expansion core is hollow. One end of the expansion core is provided with an open slot matched with the poking pin. The other end of the expansion core is connected to a ring plane and a ring bevel. An external thread matched with the internal thread of the slotted nut is arranged on the outer surface of the ring plane and is threadedly connected with the slotted nut. The expansion sleeve is matched with the outside of the expansion core. The lower end of the fixing rod is matched with a flat shaft hole at the lower end of a valve body. The upper end is a slotted structure and is connected with the pull rod in a rotatable manner through the fixing pin. The utility model is simple to operate, facilitates the disassembly of the ball valve, all parts are convenient to manufacture, and is suitable for the valve maintenance industry.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary tools for valves, and specifically relates to a ball valve disassembly tool. Background Technology

[0002] Ball valves are widely used in industrial pipelines, but their structural characteristics make them difficult to disassemble after installation. In particular, the operating space within the valve body cavity is limited, and the valve seat assembly is fitted to the valve body via a sealing ring. Disassembly requires maintaining the valve seat parallel to the valve body passage, and no universal tools are available. Current technology lacks specialized tools for efficient and reliable disassembly and assembly, resulting in low maintenance efficiency and operational difficulties. Therefore, there is an urgent need for a specialized disassembly tool that is simple in structure and easy to operate. Utility Model Content

[0003] This utility model addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a ball valve disassembly tool. This utility model is simple to operate, facilitates the disassembly of ball valves, and all parts are easy to manufacture, making it suitable for industries such as valve repair.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] This utility model provides a ball valve disassembly tool, characterized in that it includes a pull rod, a slotted nut, an expansion sleeve, a deflecting pin, an expansion core, a fixing pin, and a fixing rod. The pull rod is provided with an upper pin hole that mates with the deflecting pin and a lower pin hole that mates with the fixing pin. Both the deflecting pin and the fixing pin can rotate after being inserted into the upper pin hole and the lower pin hole, respectively. The expansion core is hollow inside, and one end of the expansion core is provided with an open groove that mates with the deflecting pin. The other end of the expansion core transitions from a ring plane to a ring bevel. An external thread that mates with the internal thread of the slotted nut is provided on the outer surface of the ring plane and is threadedly connected to the slotted nut. The expansion sleeve fits around the expansion core. The lower end of the fixing rod mates with a flat shaft hole at the lower end of the valve body, and the upper end has a slotted structure and is rotatably connected to the pull rod through the fixing pin.

[0006] Furthermore, the outer ring of the expansion sleeve is a ring-plane structure, and the inner ring is a ring-plane transition ring-sloping structure that mates with the outer surface of the expansion core.

[0007] Furthermore, multiple elastic groove structures are provided at both ends of the expansion sleeve along its axial direction.

[0008] Furthermore, the elastic groove structures at both ends of the expansion sleeve are staggered.

[0009] Furthermore, two opening slots are provided along the axial direction of the expansion core, namely an inner opening slot closer to the expansion sleeve and an outer opening slot farther from the expansion sleeve. The opening directions of the inner opening slot and the outer opening slot are consistent. When the pull rod is rotated, the expansion core can be driven to move axially through the interaction between the actuating pin inserted into the upper pin hole and the side wall of the outer opening slot or the side wall of the inner opening slot.

[0010] Furthermore, the upper part of the pull rod has a knurled structure, and the lower part has a flat structure, with the lower pin hole located in the flat structure.

[0011] Furthermore, the lower end of the pull rod is inserted into the slot at the upper end of the fixing rod, and the fixing pin passes through both the lower pin hole at the lower end of the pull rod and the pin hole provided at the slot structure of the fixing rod.

[0012] Furthermore, the slotted nut has axial grooves on each plane of its outer surface.

[0013] Furthermore, the lower end of the fixing rod is a guide cone surface.

[0014] The beneficial effects of this utility model.

[0015] This invention achieves rapid and smooth disassembly of the ball valve seat assembly in confined spaces through the ingenious cooperation of components such as the pull rod, expansion sleeve, and expansion core. The tool is compact, easy to operate, and convenient to manufacture, significantly improving maintenance efficiency. It is applicable to various ball valve models and has wide applicability. Attached Figure Description

[0016] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention when disassembling a ball valve.

[0019] Figure 3 This is a three-dimensional structural diagram of the pull rod of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the expansion core of this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the expansion sleeve of this utility model.

[0022] Figure 6 This is a three-dimensional structural diagram of the fixing rod of this utility model.

[0023] Figure 7 This is a side view of the slotted nut of this utility model.

[0024] The markings in the diagram are as follows: 1 is the pull rod, 2 is the slotted nut, 3 is the expansion sleeve, 4 is the actuating pin, 5 is the expansion core, 6 is the fixing pin, 7 is the fixing rod, 8 is the upper pin hole, 9 is the lower pin hole, 10 is the elastic groove, 11 is the inner opening groove, 12 is the outer opening groove, 13 is the slot, 14 is the groove, 15 is the valve seat assembly, and 16 is the valve body. Detailed Implementation

[0025] Combined with appendix Figure 1-7 As shown, this embodiment provides a ball valve disassembly tool, including a pull rod 1, a slotted nut 2, an expansion sleeve 3, a moving pin 4, an expansion core 5, a fixing pin 6, and a fixing rod 7.

[0026] like Figure 1 , 2 As shown in Figure 3, the upper part of the pull rod 1 has a knurled structure for easy gripping, and the lower part has a flat structure. The pull rod 1 is provided with an upper pin hole 8 that cooperates with the actuating pin 4 and a lower pin hole 9 that cooperates with the fixing pin 6. The lower pin hole 9 is located at the flat structure. The actuating pin 4 and the fixing pin 6 can both rotate after being inserted into the upper pin hole 8 and the lower pin hole 9.

[0027] like Figure 1 , 2 As shown in Figure 4, the expansion core 5 is hollow inside, and one end of the expansion core 5 is provided with an open groove that mates with the actuating pin 4. In order to improve the operating range and facilitate the removal of the valve seat assembly 15, two open grooves are provided along the axial direction of the expansion core 5, namely an inner open groove 11 closer to the expansion sleeve 3 and an outer open groove 12 further away from the expansion sleeve 3. The opening directions of the inner open groove 11 and the outer open groove 12 are the same. When the pull rod 1 is rotated, the actuating pin 4 inserted into the upper pin hole 8 can drive the expansion core 5 to move axially through the interaction between it and the side wall of the outer open groove 12 or the side wall of the inner open groove 11. The other end of the expansion core 5 transitions from a ring plane to a ring bevel, and an external thread that mates with the internal thread of the slotted nut 2 is provided on the outer surface of the ring plane and is threadedly connected to the slotted nut 2.

[0028] like Figure 1 , 2 As shown in Figures 7 and 8, due to the limited operating space inside the valve body 16, the slotted nut 2 has grooves 14 axially provided on each plane of its outer surface, which facilitates the rotation of the slotted nut 2 by inserting an operating tool into the groove 14.

[0029] like Figure 1 , 2As shown in Figure 5, the outer ring of the expansion sleeve 3 is a ring-plane structure, and the inner ring is a ring-plane transition ring inclined structure that mates with the outer surface of the expansion core 5. The expansion sleeve 3 fits around the outside of the expansion core 5. Multiple elastic grooves 10 are provided at both ends of the expansion sleeve 3 along its axial direction, and the elastic grooves 10 at both ends are staggered. When the expansion core 5 and the expansion sleeve 3 interact through the inclined surfaces, the elastic grooves 10 structure allows the tightening force of the outer surface of the expansion sleeve 3 to be evenly applied to the inner hole of the valve seat assembly 15, increasing the contact area of ​​the mating surfaces.

[0030] like Figure 1 , 2 As shown in Figure 6, the lower end of the fixing rod 7 is a guide cone surface, which cooperates with the flat shaft hole at the lower end of the valve body 16. The guide cone surface structure makes it easy for the fixing rod 7 to be installed into the flat shaft hole. After the fixing rod 7 is installed into the flat shaft hole, it serves as a fulcrum when the disassembly tool is operated.

[0031] The upper end of the fixed rod 7 has a slotted structure 13. The flat structure at the lower end of the pull rod 1 is inserted into the slotted structure 13 at the upper end of the fixed rod 7. The fixing pin 6 passes through the lower pin hole 9 at the lower end of the pull rod 1 and the pin hole provided at the slotted structure 13 of the fixed rod 7, so that the pull rod 1 and the fixed rod 7 are rotatably connected.

[0032] When using this tool, first assemble the expansion sleeve 3, expansion core 5, and slotted nut 2, then insert them into the inner hole of the valve seat assembly 15 along the middle cavity of the valve body 16. With the opening slot of the expansion core 5 facing upwards, tighten the slotted nut 2. At this time, due to the interaction of the inner and outer inclined surfaces, the outer circle of the expansion sleeve 3 and the expansion core 5 tightly fits with the inner hole of the valve seat assembly 15, thus tightening the expansion core 5 and the expansion sleeve 3 and fixing them to the valve seat assembly 15. Subsequently, assemble the pull rod 1 with the actuating pin 4, the fixing pin 6, and the fixing rod 7. Insert the lower end of the fixing rod 7 into the shaft hole at the lower end of the valve body 16, and engage the actuating pin 4 with the outer opening slot 12 of the expansion core 5.

[0033] Pull the lever 1 in the direction of valve seat assembly 15 removal to gradually remove the valve seat assembly 15. Sometimes, after the valve seat assembly 15 is partially removed, further operation is required due to limited operating space. Lift the combined assembly of lever 1, actuating pin 4, fixing pin 6, and fixing rod 7 upwards until the actuating pin 4 disengages from the outer opening groove 12 on the expansion core 5. Then move the actuating pin 4 to the inner opening groove 11 and pull the lever 1 in the same operating direction to completely remove the valve seat assembly 15.

[0034] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A ball valve disassembly tool, characterized in that, The assembly includes a pull rod (1), a slotted nut (2), an expansion sleeve (3), a moving pin (4), an expansion core (5), a fixing pin (6), and a fixing rod (7). The pull rod (1) is provided with an upper pin hole (8) that mates with the moving pin (4) and a lower pin hole (9) that mates with the fixing pin (6). Both the moving pin (4) and the fixing pin (6) can rotate after being inserted into the upper pin hole (8) and the lower pin hole (9). The expansion core (5) is hollow inside, and one end of the expansion core (5) is provided with a... The opening groove that cooperates with the actuating pin (4) is provided on the outer surface of the ring plane, which transitions from a ring plane to a ring slope. The outer surface of the ring plane is provided with an external thread that cooperates with the internal thread of the slotted nut (2) and is threadedly connected to the slotted nut (2). The expansion sleeve (3) is fitted around the outside of the expansion core (5). The lower end of the fixing rod (7) cooperates with the flat shaft hole at the lower end of the valve body (16). The upper end has a slotted (13) structure and is rotatably connected to the pull rod (1) through the fixing pin (6).

2. The ball valve disassembly tool according to claim 1, characterized in that, The outer ring of the expansion sleeve (3) is a ring plane structure, and the inner ring is a ring plane transition ring inclined structure that matches the outer surface of the expansion core (5).

3. A ball valve disassembly tool according to claim 2, characterized in that, The expansion sleeve (3) has multiple elastic grooves (10) at both ends of its axial direction.

4. A ball valve disassembly tool according to claim 3, characterized in that, The elastic grooves (10) at both ends of the expansion sleeve (3) are staggered and connected.

5. A ball valve disassembly tool according to claim 1, characterized in that, Two opening slots are provided along the axial direction of the expansion core (5), namely an inner opening slot (11) close to the expansion sleeve (3) and an outer opening slot (12) away from the expansion sleeve (3). The opening directions of the inner opening slot (11) and the outer opening slot (12) are consistent. When the pull rod (1) is rotated, the expansion core (5) can be driven to move axially through the interaction between the actuating pin (4) inserted into the upper pin hole (8) and the side wall of the outer opening slot (12) or the side wall of the inner opening slot (11).

6. A ball valve disassembly tool according to claim 1, characterized in that, The upper part of the pull rod (1) has a knurled structure, and the lower part has a flat structure. The lower pin hole (9) is located in the flat structure.

7. A ball valve disassembly tool according to claim 6, characterized in that, The lower end of the pull rod (1) is inserted into the slot (13) at the upper end of the fixed rod (7), and the fixing pin (6) passes through the lower pin hole (9) at the lower end of the pull rod (1) and the pin hole provided at the slot (13) structure of the fixed rod (7).

8. A ball valve disassembly tool according to claim 1, characterized in that, The slotted nut (2) has grooves (14) axially provided on each plane of its outer surface.

9. A ball valve disassembly tool according to claim 1, characterized in that, The lower end of the fixing rod (7) is a guide cone surface.

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