Disassembling tool for valve rod of butterfly valve

Abstract

The utility model relates to a disassembling tool for a valve rod of a butterfly valve, on the disassembling tool for the valve rod of the butterfly valve, the position of a disassembling flange plate can be correspondingly adjusted through the matching of a disassembling threaded piece and a disassembling threaded hole in the disassembling flange plate, so that the disassembling flange plate drives a valve rod to move, and further the disassembling of the valve rod is completed. Therefore, the disassembly of the valve rod can be quickly and stably completed through the rotation of the two disassembly threaded pieces, and the disassembly convenience of the valve rod of the butterfly valve is greatly improved; and moreover, the valve rod is gently disassembled in a thread matching manner, the damage to the valve rod is avoided, and the deformation, abrasion or other bad damage to the whole butterfly valve is also avoided, so that the performance of the butterfly valve is ensured.

Description

Technical Field

[0001] The utility model relates to the field of disassembly tools, in particular to a disassembly tool for a butterfly valve stem. Background Art

[0002] As a key component for controlling fluid flow in industrial piping systems, butterfly valves’ maintenance and overhaul are important links to ensure the normal operation of piping systems. Disassembly and reassembly of butterfly valves usually need to be carried out in a specific order to avoid damaging the internal structure or affecting its sealing performance. According to the existing butterfly valve structure diagram and disassembly sequence, however, during this disassembly process, due to the presence of the valve packing assembly and the tight fit of the sealing ring, the valve stem may encounter greater resistance when being extracted, including friction and resistance caused by corrosion of metal parts, which makes the removal of the valve stem very difficult.

[0003] In the related art, the method of disassembling a butterfly valve usually uses a clamp to fix the valve stem, and then uses a copper rod to knock the flange to try to pull out the valve stem. This method may not only cause scratches or damage to the valve stem surface, but also cause slight deformation of the flange, resulting in a decrease in the performance of the butterfly valve. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a butterfly valve stem disassembly tool, which can solve the problems that the valve stem is difficult to disassemble, the valve stem is easily damaged during the extraction process, and it is easy to have a negative impact on the performance of the butterfly valve.

[0005] The utility model provides a butterfly valve stem disassembly tool, which is used to disassemble the valve stem on the valve body. The butterfly valve stem disassembly tool comprises a disassembly flange and at least two disassembly threaded parts. The disassembly flange is provided with a position avoidance hole and at least two disassembly threaded holes. The position avoidance hole is used for the valve stem to pass through. Each of the disassembly threaded parts is correspondingly screwed to each of the disassembly threaded holes and abuts against the valve body.

[0006] When each of the disassembly threaded members rotates in the disassembly threaded hole, it drives the disassembly flange to move along the length extension direction of the valve stem and abut against the valve stem, so that the disassembly flange supports the valve stem to withdraw from the valve body.

[0007] Preferably, a positioning key is provided on the valve stem, and the disassembly flange is supported on the positioning key.

[0008] Preferably, the butterfly valve stem disassembly tool also includes a locking device, which is arranged on the disassembly flange. When the locking device is locked, the relative position of the valve stem and the disassembly flange is fixed, so that the disassembly flange can drive the valve stem to move through the locking device.

[0009] Preferably, the butterfly valve stem disassembly tool includes three disassembly threaded members, three disassembly threaded holes are opened on the disassembly flange, the three disassembly threaded members are screwed to the three disassembly threaded holes one by one, and the three disassembly threaded members are all held on the valve body.

[0010] Preferably, the disassembly threaded holes are symmetrically distributed around the avoidance hole; and / or

[0011] The avoidance hole is located at the center of the disassembly flange.

[0012] Preferably, each of the disassembly threaded members is a top screw, each of the top screws is threadedly connected to each of the disassembly threaded holes in a one-to-one correspondence, and an end of each of the top screws is held on the valve body.

[0013] Preferably, each of the disassembly threaded members is provided with a non-threaded section and a threaded section, the non-threaded section is supported on the valve body, and the threaded section is screwed to the disassembly threaded hole.

[0014] Preferably, the butterfly valve stem disassembly tool also includes at least one disassembly raising member, a positioning hole is formed on the disassembly raising member, the hole wall of the positioning hole extends outward and forms a positioning notch on the peripheral side of the disassembly raising member, the positioning notch is for the valve stem to pass through, so that the valve stem passes through the positioning hole, and the disassembly raising member is supported by the disassembly threaded member and abuts against the valve body.

[0015] Preferably, the butterfly valve stem disassembly tool further comprises a buffer pad, which is sleeved on the valve stem and respectively abuts against the disassembly flange and the valve stem.

[0016] Preferably, a mounting notch is provided on the disassembly flange, and the mounting notch extends inward from the outer side of the circumference of the disassembly flange to be connected to the avoidance hole.

[0017] The implementation of this utility model has the following beneficial effects:

[0018] The utility model relates to a butterfly valve stem disassembly tool. On the butterfly valve stem disassembly tool, the position of the disassembly flange can be correspondingly adjusted by cooperating between a disassembly threaded piece and a disassembly threaded hole on a disassembly flange, thereby driving the valve stem to move through the disassembly flange, thereby completing the disassembly of the valve stem.

[0019] In this way, the valve stem can be disassembled quickly and smoothly by rotating the two disassembly threaded parts, which greatly improves the convenience of disassembly of the butterfly valve stem; furthermore, the smooth disassembly of the valve stem is achieved through the cooperation of the threads, avoiding damage to the valve stem and deformation, wear or other adverse damage to the butterfly valve as a whole, thereby ensuring the performance of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0021] Figure 1 It is a schematic diagram of the structure of a butterfly valve stem removal tool and a butterfly valve in some embodiments of the utility model;

[0022] Figure 2 yes Figure 1 Another use state diagram of the butterfly valve stem removal tool shown;

[0023] Figure 3 yes Figure 1 The exploded view of the butterfly valve stem removal tool and the butterfly valve is shown;

[0024] Figure 4 It is a structural schematic diagram of a butterfly valve stem removal tool and a butterfly valve in other embodiments of the utility model;

[0025] Figure 5 yes Figure 4 Another use state diagram of the butterfly valve stem removal tool shown;

[0026] Figure 6 yes Figure 4 Exploded view of butterfly valve stem removal tool and butterfly valve shown. DETAILED DESCRIPTION

[0027] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0028] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] Figure 1 and Figure 2 The butterfly valve stem removal tool 10 in some embodiments of the present invention is shown, which is used to remove the valve stem 30 on the valve body 20. The butterfly valve stem removal tool 10 can be used to remove the valve stem 30 from the valve body 20, thereby improving the convenience of removing the valve stem 30. Of course, the present invention can also be applied to valve body structures other than butterfly valves that also require valve stem removal.

[0032] like Figures 1 to 6 As shown, the butterfly valve stem disassembly tool 10 includes a disassembly flange 1 and at least two disassembly threaded members 2. The disassembly flange 1 is provided with a relief hole 11 and at least two disassembly threaded holes 12. The relief hole 11 is for the valve stem 30 to pass through. Each disassembly threaded member 2 is correspondingly screwed to each disassembly threaded hole 12 and abuts against the valve body 20. When each disassembly threaded member 2 rotates in the disassembly threaded hole 12, it drives the disassembly flange 1 to move along the length extension direction of the valve stem 30 and abuts against the valve stem 30, so that the disassembly flange 1 pushes the valve stem 30 out of the valve body 20.

[0033] It can be understood that the disassembly flange 1 is used for installing and disassembling the threaded member 2 on the one hand, and for supporting the valve stem 30 to move together during the movement process, thereby completing the disassembly of the valve stem 30. The diameter of the avoidance hole 11 is designed to be slightly larger than the diameter of the target butterfly valve stem 30 to allow the valve stem 30 to pass smoothly. The disassembly threaded hole 12 is a through hole, and a thread is arranged on its hole wall.

[0034] It should be noted that the disassembly threaded members 2 can be bolts or other types of threaded connectors, and the number of the disassembly threaded members 2 matches the disassembly threaded holes 12. Each disassembly threaded member 2 is screwed into the corresponding disassembly threaded hole 12, and when the operator rotates the disassembly threaded member 2, the threaded member rotates in the threaded hole, pushing the disassembly flange 1 to move along the axial direction of the valve stem 30, thereby supporting the valve stem 30 and allowing it to withdraw smoothly from the valve body 20.

[0035] In actual operation, first place the disassembly flange 1 on one side of the valve body 20, and allow the valve stem 30 to pass through the avoidance hole 11 on the disassembly flange 1. Next, screw each disassembly screw 2 into each disassembly screw hole 12, ensuring that the end of each disassembly screw 2 abuts against the valve body 20. Subsequently, the disassembly screw 2 is rotated manually or with a tool, and the rotational motion of the disassembly screw 2 is converted into an axial thrust, which pushes the disassembly flange 1 to move, so that the disassembly flange 1 pushes the valve stem 30, causing the valve stem 30 to gradually withdraw from the valve body 20, completing the disassembly of the valve stem 30 ( Figure 1 The middle valve stem is driven by the disassembly flange 1 to withdraw and form a Figure 2 status shown).

[0036] Specifically, the disassembly flange 1 can be configured as a flat structure in some embodiments. Further, the disassembly flange 1 can be configured as a circular or approximately circular structure, or the disassembly flange 1 can be configured as a square or approximately square structure. Of course, the disassembly flange 1 can also be configured in various shapes, as long as the disassembly flange 1 can hold the valve stem 30 during the movement and be disassembled and disengaged.

[0037] like Figures 1 to 6 As shown, in some embodiments of the butterfly valve stem removal tool 10 , a positioning key 40 is provided on the valve stem 30 , and the removal flange 1 is supported on the positioning key 40 .

[0038] It can be understood that the positioning key 40 can be one or more protruding structures, which can be long strips or other suitable geometric shapes, and whose size and position are designed to match the corresponding grooves or holes on the disassembly flange 1. When the disassembly flange 1 moves along the length extension direction of the valve stem 30, the valve stem 30 will be supported on the positioning key 40, and then, the further movement of the disassembly flange 1 will drive the valve stem 30 to move through the positioning key 40, so as to achieve the purpose of disassembling the valve stem 30.

[0039] It should be noted that the positioning key 40 may be a part already provided on the valve stem 30 , and the valve stem 30 on certain types of valve structures is locked relative to other components by the positioning key 40 .

[0040] Furthermore, in some embodiments, the positioning key 40 may be provided with a groove or hole adapted to the positioning key 40. Thus, when the disassembly flange 1 and the valve stem 30 are matched and supported, the positioning key 40 will be embedded in the corresponding groove or hole on the disassembly flange 1 to form a mechanical lock, thereby ensuring that the valve stem 30 remains stable and immobile during the entire disassembly process.

[0041] In some embodiments of the butterfly valve stem removal tool 10, the butterfly valve stem removal tool 10 also includes a locking device, which is arranged on the removal flange 1. When the locking device is locked, the relative position of the valve stem 30 and the removal flange 1 is fixed, so that the removal flange 1 can drive the valve stem 30 to move through the locking device.

[0042] It can be understood that the locking device is used to fix the relative position of the disassembly flange 1 and the valve stem 30 during the disassembly process, thereby ensuring that the disassembly flange 1 can effectively drive the valve stem 30 when moving, thereby achieving a smooth and controllable disassembly action.

[0043] It should be noted that the locking device can be in various forms, such as snap-on, threaded, wedge-shaped locking or other suitable mechanical locking mechanisms. On the disassembly flange 1, the locking device is designed to interact with specific structures (such as grooves, flanges, etc.) on the valve stem 30 to form a firm connection. Once the locking device is activated, it will prevent any movement of the valve stem 30 relative to the disassembly flange 1 until the disassembly process is completed.

[0044] When the valve stem 30 of the butterfly valve needs to be removed, the locking device is activated to make it closely contact with the corresponding structure on the valve stem 30 to form a mechanical lock. At this time, even when the disassembly screw 2 rotates to push the disassembly flange 1, the valve stem 30 will not rotate or slide, but move as a whole with the disassembly flange 1, thereby smoothly withdrawing from the valve body 20.

[0045] like Figures 4 to 6 As shown, in some embodiments of the butterfly valve stem disassembly tool 10, the butterfly valve stem disassembly tool 10 includes three disassembly threaded members 2, three disassembly threaded holes 12 are opened on the disassembly flange 1, the three disassembly threaded members 2 are threadedly connected to the three disassembly threaded holes 12 one by one, and the three disassembly threaded members 2 are all held on the valve body 20.

[0046] It can be understood that the disassembly flange 1 is provided with three disassembly threaded holes 12, which are distributed around the avoidance hole 11 to form a triangular layout. Such a layout ensures that when the disassembly threaded member 2 is rotated, the force on the disassembly flange 1 is evenly distributed, thereby avoiding the deflection or distortion that may be caused by a single point of force. In this way, the disassembly stability and reliability of the valve stem 30 are further improved, and the possibility of damage to the valve stem 30 and the valve body 20 is further avoided, which further guarantees the performance of the butterfly valve after disassembly.

[0047] like Figures 4 to 6 As shown, in some embodiments of the butterfly valve stem removal tool 10 , the removal threaded holes 12 are symmetrically distributed around the avoidance hole 11 .

[0048] It can be understood that the circumferentially symmetrically distributed disassembly threaded holes 12 ensure that during the disassembly process, the force applied by the disassembly threaded member 2 to the disassembly flange 1 is balanced, avoiding deflection or torque caused by unilateral force, and reducing the risk of damage to the valve stem 30 and the valve body 20 during the disassembly process.

[0049] like Figure 3 and Figure 6 As shown, in some embodiments of the butterfly valve stem removal tool 10 , the avoidance hole 11 is located at the center of the removal flange 1 .

[0050] It can be understood that the avoidance hole 11 at the center ensures that when the disassembly screw 2 pushes the disassembly flange 1 to move, the force can be evenly distributed to the entire flange, avoiding distortion or imbalance caused by eccentric force. Since the avoidance hole 11 is located in the center, it provides the best axial alignment for the valve stem 30, ensuring that the valve stem 30 can move in a straight line along its own center line during the disassembly process, avoiding unnecessary lateral force, thereby reducing potential damage to the valve stem 30 and the valve body 20.

[0051] like Figures 1 to 6 As shown, in some embodiments of the butterfly valve stem disassembly tool 10 , each disassembly threaded member 2 is a top screw, each top screw is threadedly connected to each disassembly threaded hole 12 one by one, and the end of each top screw is held on the valve body 20 .

[0052] It can be understood that the disassembly threaded member 2 is configured as a top screw, which can provide a stable holding force through the top screw and is easy to operate. One end of the top screw is designed with a thread for threading into the disassembly threaded hole 12 on the disassembly flange 1, and the other end is used to hold on the valve body 20. The thread design of the top screw ensures that it can be firmly fixed in the disassembly threaded hole 12, and its holding end provides the necessary supporting force to push the disassembly flange 1 to move along the axis (length extension direction) of the valve stem 30.

[0053] like Figures 1 to 6 As shown, in some embodiments of the butterfly valve stem disassembly tool 10 , each disassembly threaded member 2 is provided with a threaded section 22 and a non-threaded section 21 , the non-threaded section 21 is supported on the valve body 20 , and the threaded section 22 is screwed into the disassembly threaded hole 12 .

[0054] It can be understood that the threaded section 22 is used to match the disassembly threaded hole 12 on the disassembly flange 1. By rotating the threaded section 22, the disassembly threaded member 2 and the disassembly flange 1 can be connected and separated. The non-threaded section 21 is located at the other end of the disassembly threaded member 2 and is mainly used to support the valve body 20.

[0055] It should be noted that, according to the content of this embodiment, the non-threaded section 21 of the disassembly threaded member 2 can be directly inserted into the disassembly threaded hole 12 without threading the non-threaded section 21 .

[0056] like Figures 4 to 6 As shown, in some embodiments of the butterfly valve stem removal tool 10, the butterfly valve stem removal tool 10 also includes at least one disassembly raising member 3, a positioning hole 31 is opened on the disassembly raising member 3, the hole wall of the positioning hole 31 extends outward and forms a positioning notch 32 on the peripheral side of the disassembly raising member 3, the positioning notch 32 is for the valve stem 30 to pass through, so that the valve stem 30 passes through the positioning hole 31, and the disassembly raising member 3 is supported by the disassembly threaded member 2 and abuts against the valve body 20.

[0057] It can be understood that the positioning notch 32 is provided so that the disassembly heightening member 3 can be directly inserted from the side of the valve stem 30, and the disassembly heightening member 3 can be directly assembled without removing the disassembly flange 1, thereby improving the convenience of use. The hole wall of the positioning hole 31 is adapted to the peripheral side of the valve stem 30, but the hole diameter of the positioning hole 31 is larger than the outer diameter of the valve stem 30, so that the positioning hole 31 will not damage the valve stem 30.

[0058] When in use, the disassembly heightening member 3 is placed between the valve body 20 and the disassembly flange 1, and the valve stem 30 is ensured to pass through the positioning hole 31. The disassembly heightening member 3 provides additional support and positioning. Subsequently, the disassembly screw 2 is rotated continuously so that it is supported on the disassembly heightening member 3 instead of directly supported on the valve body 20. The disassembly heightening member 3 increases the distance between the disassembly screw 2 and the valve body 20, so that the disassembly screw 2 can push the disassembly flange 1 over a longer distance, thereby completely disassembling the valve stem 30.

[0059] like Figures 4 to 6 As shown, in some embodiments of the butterfly valve stem removal tool 10, the butterfly valve stem removal tool 10 further includes a buffer pad 4, which is sleeved on the valve stem 30, and the buffer pad 4 is respectively supported on the removal flange 1 and the valve stem 30.

[0060] It can be understood that the main purpose of the buffer pad 4 is to protect the valve stem 30 and the disassembly flange 1 during the disassembly process to avoid scratches or damages that may be caused by hard contact. The buffer pad 4 is usually made of soft and wear-resistant materials, such as rubber, polyurethane or special elastomers, which can provide good buffering effects while bearing pressure. The buffer pad 4 is designed to be annular, and its inner diameter is slightly larger than the diameter of the valve stem 30.

[0061] In some embodiments of the butterfly valve stem removal tool 10 , a mounting notch (not shown) is provided on the removal flange 1 , and the mounting notch extends inward from the outer side of the circumference of the removal flange 1 to communicate with the avoidance hole 11 .

[0062] It can be understood that the opening of the installation notch allows the disassembly flange 1 to be directly inserted into the side of the valve stem 30, thereby preventing the disassembly flange 1 from being interfered with by other components during the installation process and being unable to be assembled into place, thereby eliminating the need for disassembly of components that hinder this part, and further improving the convenience of disassembly of the valve stem 30.

[0063] The implementation of this utility model has the following beneficial effects:

[0064] The utility model relates to a butterfly valve stem disassembly tool. On the butterfly valve stem disassembly tool, the position of the disassembly flange can be correspondingly adjusted by cooperating between a disassembly threaded piece and a disassembly threaded hole on a disassembly flange, thereby driving the valve stem to move through the disassembly flange, thereby completing the disassembly of the valve stem.

[0065] In this way, the valve stem can be disassembled quickly and smoothly by rotating the two disassembly threaded parts, which greatly improves the convenience of disassembly of the butterfly valve stem; furthermore, the smooth disassembly of the valve stem is achieved through the cooperation of the threads, avoiding damage to the valve stem and deformation, wear or other adverse damage to the butterfly valve as a whole, thereby ensuring the performance of the butterfly valve.

[0066] The scheme of the utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily required for the utility model. In addition, it can be understood that the steps in the method of the embodiment of the utility model can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the utility model can be merged, divided and deleted according to actual needs.

[0067] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A butterfly valve stem removal tool, used for removing a valve stem (30) from a valve body (20), characterized in that: The butterfly valve stem disassembly tool comprises a disassembly flange (1) and at least two disassembly threaded members (2), the disassembly flange (1) is provided with a relief hole (11) and at least two disassembly threaded holes (12), the relief hole (11) is for the valve stem (30) to pass through, and each of the disassembly threaded members (2) is correspondingly screwed to each of the disassembly threaded holes (12) and abuts against the valve body; When each of the disassembly threaded members (2) rotates in the disassembly threaded hole (12), it drives the disassembly flange (1) to move along the length extension direction of the valve stem and abut against the valve stem, so that the disassembly flange (1) supports the valve stem to withdraw from the valve body.

2. The butterfly valve stem removal tool according to claim 1, characterized in that: A positioning key (40) is provided on the valve stem, and the disassembly flange (1) is supported on the positioning key (40).

3. The butterfly valve stem removal tool according to claim 1, characterized in that: The butterfly valve stem removal tool also includes a locking device, which is arranged on the removal flange (1). When the locking device is locked, the relative position of the valve stem and the removal flange (1) is fixed, so that the removal flange (1) can drive the valve stem to move through the locking device.

4. The butterfly valve stem removal tool according to claim 1, characterized in that: The butterfly valve stem disassembly tool comprises three disassembly threaded members (2), three disassembly threaded holes (12) are provided on the disassembly flange (1), the three disassembly threaded members (2) are correspondingly screwed to the three disassembly threaded holes (12), and the three disassembly threaded members (2) are all held on the valve body.

5. The butterfly valve stem removal tool according to claim 1 or 4, characterized in that: The disassembly threaded holes (12) are symmetrically distributed around the avoidance hole (11); and / or The avoidance hole (11) is located at the center of the disassembly flange (1).

6. The butterfly valve stem removal tool according to any one of claims 1 to 4, characterized in that: Each of the disassembly threaded parts (2) is a top screw, each of the top screws is screwed to each of the disassembly threaded holes (12) in a one-to-one correspondence, and the end of each of the top screws is supported on the valve body.

7. The butterfly valve stem removal tool according to any one of claims 1 to 4, characterized in that: Each of the disassembly threaded parts (2) is provided with a non-threaded section (21) and a threaded section (22); the non-threaded section (21) is supported on the valve body, and the threaded section (22) is screwed into the disassembly threaded hole (12).

8. The butterfly valve stem removal tool according to claim 1, characterized in that: The butterfly valve stem disassembly tool also includes at least one disassembly heightening member (3), a positioning hole (31) is formed on the disassembly heightening member (3), the hole wall of the positioning hole (31) extends outward and forms a positioning notch (32) on the peripheral side of the disassembly heightening member (3), the positioning notch (32) is for the valve stem to pass through, so that the valve stem passes through the positioning hole (31), and the disassembly heightening member (3) is supported by the disassembly threaded member (2) and abuts against the valve body.

9. The butterfly valve stem removal tool according to claim 1, characterized in that: The butterfly valve stem disassembly tool further comprises a buffer pad (4), wherein the buffer pad (4) is sleeved on the valve stem, and the buffer pad (4) is respectively supported on the disassembly flange (1) and the valve stem.

10. The butterfly valve stem removal tool according to claim 1, characterized in that: The disassembly flange (1) is provided with a mounting notch, and the mounting notch extends inward from the outer side of the circumference of the disassembly flange (1) and is connected to the avoidance hole (11).

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