Quick replacement seal ring buckle of butterfly valve

Abstract

The utility model discloses a quick replacement type sealing ring buckle of butterfly valve, including the valve body, the top fixedly connected with transmission motor of valve body, the inside of valve body is inlayed with rotatable sealing board, the top and bottom of valve body all are provided with the bushing pipe, the inner bag of bushing pipe penetrates valve body and is inserted in the surface of sealing board, the output fixedly connected with transmission rod of transmission motor, the one end of transmission rod away from transmission motor extends to the inside of top bushing pipe and is mutually key connection with top bushing pipe, the top and bottom of valve body all are provided with the connecting frame, the inside of connecting frame is in contact with the surface of bushing pipe, the left side of valve body is provided with the adjusting structure. The utility model is through transmission rod and bushing pipe key connection, and key connection replaces traditional thread fixed, avoids repeatedly disassembling and assembling threaded assembly, and transmission is more stable and reliable, and directly inserts the design and spares the flange or thread locking step, reduces sealing ring dismounting complexity.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically to a quick-change sealing ring snap fastener for a butterfly valve. Background Technology

[0002] A butterfly valve is a commonly used fluid control device, mainly used in pipeline systems to cut off or regulate the flow of media.

[0003] For example, patent application number 87206822 published on the China Patent Network is titled: "Butterfly Valve with Sealing Ring Embedded in Valve Seat," comprising a valve body, valve seat, valve stem, and valve plate. Its key feature is that a sealing ring is embedded in the center of the valve seat, preferably made of rubber. Except for the sealing ring, the remaining parts of the valve seat are made of a material that does not easily produce alkaline scaling. This butterfly valve is particularly suitable for alkaline media environments, effectively overcoming the defects of previous all-rubber valve seats in alkaline media that resulted in scaling on the surface, causing the valve plate to open and close inflexibly, and in severe cases, tearing the rubber valve seat, thus shortening the service life of the butterfly valve.

[0004] However, the existing sealing ring connection method is relatively simple, mainly relying on threaded assemblies for fastening. During maintenance and replacement, the threaded assemblies need to be frequently disassembled and reassembled, which is time-consuming and labor-intensive.

[0005] Therefore, the quick-change sealing ring snap of the butterfly valve needs to be redesigned and modified. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a quick-change sealing ring snap for butterfly valves, which has the advantage of facilitating sealing ring replacement and solves the problem that the existing sealing ring connection method is relatively simple, mainly relying on threaded components for fixing, and that the threaded components need to be frequently disassembled and reassembled during maintenance and replacement, which is time-consuming and labor-intensive.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a quick-change sealing ring buckle for a butterfly valve, including a valve body; A drive motor is fixedly connected to the top of the valve body. A rotatable sealing plate is embedded inside the valve body. Insertion pipes are provided at both the top and bottom of the valve body. The inner liner of the insertion pipe passes through the valve body and is inserted into the surface of the sealing plate. A drive rod is fixedly connected to the output end of the drive motor. The end of the drive rod away from the drive motor extends into the interior of the top insertion pipe and is keyed to the top insertion pipe.

[0008] As a preferred embodiment of this utility model, the valve body is provided with connecting frames at both the top and bottom. The inner side of the connecting frame is in contact with the surface of the insertion tube. The valve body is provided with an adjustment structure on the left side. The adjustment structure can use the connecting frame to control the insertion tube to move outward from the valve body and disengage from the sealing plate.

[0009] As a preferred embodiment of this utility model, the adjusting structure includes a screw movably connected to the left side of the valve body via a bearing. The surface of the screw is threaded with a threaded sleeve. Both sides of the threaded sleeve are movably connected to a crank via a pin. The side of the crank away from the threaded sleeve extends to the inner side of the connecting frame and is movably connected to the connecting frame via a pin.

[0010] As a preferred embodiment of this utility model, guide rods are fixedly connected to the left side of both the top and bottom of the valve body, and the side of the guide rod away from the valve body passes through the connecting frame and is slidably connected to the connecting frame.

[0011] As a preferred embodiment of this invention, limiting rings are fixedly connected to both sides of the insertion tube surface, and the limiting rings are located on both sides of the connecting frame and are slidably connected to the connecting frame.

[0012] As a preferred embodiment of this utility model, a support frame is fitted on the surface of the screw, both ends of the support frame are fixedly connected to the left side of the valve body, and the left end of the screw extends through to the left side of the support frame and is fixedly connected to a rotating wheel.

[0013] In a preferred embodiment of this invention, the support frame is hollowed out, and a slider located inside the support frame is fixedly connected to the surface of the screw sleeve, with the slider slidably connected to the support frame.

[0014] As a preferred embodiment of this utility model, a spring plate is fixedly connected to the inner side of the crank, and the side of the spring plate away from the crank contacts the surface of the connecting frame, and the spring plate is elastic.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a keyed connection between a transmission rod and a plug tube. The keyed connection replaces the traditional threaded fixing, avoiding repeated disassembly and assembly of threaded components, making the transmission more stable and reliable. At the same time, the direct plug-in design eliminates the need for flange or threaded locking steps, reducing the complexity of disassembly and assembly of the sealing ring.

[0016] 2. This utility model uses a single adjustment mechanism to synchronously drive the top and bottom insertion pipes to disengage, thereby achieving one-click release of the sealing plate.

[0017] 3. This utility model converts the rotational motion of the screw into the radial oscillation of the crank, thereby driving a large thrust output with a small torque input and reducing the intensity of operation.

[0018] 4. This utility model uses a guide rod that passes through the connecting frame, which can forcibly restrict the connecting frame to slide only along the axial direction, eliminate the risk of lateral swaying, and ensure the linear motion accuracy of the insertion pipe.

[0019] 5. This utility model uses a limiting ring to clamp the connecting frame, which can limit the displacement of the insertion pipe in both directions and prevent damage to the sealing plate insertion interface when it is disengaged.

[0020] 6. This utility model fixes the screw through a support frame, provides a rotation support point and bears the bending moment of the screw, prevents thread engagement eccentricity, and improves the structural connection strength.

[0021] 7. This utility model uses a slider and a hollow support frame to slide together, which can limit the movement of the screw sleeve and improve the stability of the screw sleeve.

[0022] 8. This utility model uses an elastic plate on the inner side of the crank to pre-tighten the connecting frame to eliminate movement gaps and avoid abnormal noise caused by vibration. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model from below; Figure 4 This is a partial structural diagram of the present invention; Figure 5 This utility model Figure 2 Schematic diagram of the structure at point A in the middle; Figure 6 This utility model Figure 3 Schematic diagram of the structure at point B.

[0024] In the diagram: 1. Valve body; 2. Drive motor; 3. Sealing plate; 4. Insert pipe; 5. Drive rod; 6. Connecting frame; 7. Screw; 8. Screw sleeve; 9. Crank; 10. Guide rod; 11. Limiting ring; 12. Support frame; 13. Rotary wheel; 14. Slider; 15. Spring plate. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 6As shown, the present invention provides a quick-change sealing ring buckle for a butterfly valve, including a valve body 1; A drive motor 2 is fixedly connected to the top of the valve body 1. A rotatable sealing plate 3 is embedded inside the valve body 1. Insert pipes 4 are provided at both the top and bottom of the valve body 1. The inner liner of the insert pipe 4 passes through the valve body 1 and is inserted into the surface of the sealing plate 3. A drive rod 5 is fixedly connected to the output end of the drive motor 2. The end of the drive rod 5 away from the drive motor 2 extends into the interior of the top insert pipe 4 and is keyed to the top insert pipe 4.

[0027] refer to Figure 2 A connecting frame 6 is provided at the top and bottom of the valve body 1. The inner side of the connecting frame 6 is in contact with the surface of the insertion pipe 4. An adjustment structure is provided on the left side of the valve body 1. The adjustment structure can use the connecting frame 6 to control the insertion pipe 4 to move out of the valve body 1 and disengage from the sealing plate 3.

[0028] As a technical optimization of this utility model, the top and bottom insertion pipes 4 are simultaneously driven by a single adjustment mechanism to release the sealing plate 3 with one click.

[0029] refer to Figure 2 The adjusting structure includes a screw 7 movably connected to the left side of the valve body 1 via a bearing. A screw sleeve 8 is threadedly connected to the surface of the screw 7. Both sides of the screw sleeve 8 are movably connected to a crank 9 via a pin. The side of the crank 9 away from the screw sleeve 8 extends to the inside of the connecting frame 6 and is movably connected to the connecting frame 6 via a pin.

[0030] As a technical optimization of this utility model, the rotational motion of the screw 7 is converted into the radial oscillation of the crank 9, so as to drive a large thrust output with a small torque input and reduce the operating intensity.

[0031] refer to Figure 5 Guide rods 10 are fixedly connected to the left side of the top and bottom of the valve body 1. The side of the guide rod 10 away from the valve body 1 passes through the connecting frame 6 and is slidably connected to the connecting frame 6.

[0032] As a technical optimization of this utility model, by passing through the connecting frame 6 with the guide rod 10, the connecting frame 6 can be forcibly restricted to slide only along the axial direction, eliminating the risk of lateral swaying and ensuring the linear motion accuracy of the insertion pipe 4.

[0033] refer to Figure 5 Limiting rings 11 are fixedly connected to both sides of the surface of the insertion tube 4. The limiting rings 11 are located on both sides of the connecting frame 6 and are slidably connected to the connecting frame 6.

[0034] As a technical optimization of this utility model, the limiting ring 11 clamps the connecting frame 6, which can limit the displacement of the insertion pipe 4 in both directions and prevent damage to the sealing plate 3 insertion interface when it is disengaged.

[0035] refer to Figure 6 A support frame 12 is fitted on the surface of the screw 7. Both ends of the support frame 12 are fixedly connected to the left side of the valve body 1. The left end of the screw 7 extends through to the left side of the support frame 12 and is fixedly connected to a rotating wheel 13.

[0036] As a technical optimization of this utility model, the screw 7 is fixed by the support frame 12, which provides a rotation support point and bears the bending moment of the screw 7, prevents thread engagement eccentricity, and improves the structural connection strength.

[0037] refer to Figure 6 The support frame 12 is hollowed out, and the surface of the screw sleeve 8 is fixedly connected to the slider 14 located inside the support frame 12. The slider 14 is slidably connected to the support frame 12.

[0038] As a technical optimization of this utility model, the sliding cooperation between the slider 14 and the hollow support frame 12 can limit the movement of the screw sleeve 8 and improve the stability of the movement of the screw sleeve 8.

[0039] refer to Figure 6 A spring plate 15 is fixedly connected to the inner side of the crank 9. The side of the spring plate 15 away from the crank 9 contacts the surface of the connecting frame 6. The spring plate 15 is elastic.

[0040] As a technical optimization of this utility model, the elastic plate 15 on the inner side of the crank 9 can pre-press the connecting frame 6 to eliminate the movement gap and avoid vibration causing abnormal noise.

[0041] The working principle and usage process of this utility model are as follows: After the drive motor 2 starts, the drive rod 5 at its output end drives the top insertion pipe 4 to rotate. The inner liner of the insertion pipe 4 is inserted and fixed with the sealing plate 3. The rotational force of the drive rod 5 is transmitted to the sealing plate 3 to realize the valve opening and closing control. When the sealing ring needs to be replaced, the operator rotates the left rotating wheel 13 to drive the screw 7 to rotate. When the screw 7 rotates, it uses the thread to push the screw sleeve 8 to move horizontally. When the screw sleeve 8 moves, it pushes the cranks 9 on both sides to swing inward through the pin shaft. The swing of the cranks 9 drives the connecting frame 6 to slide along the guide rod 10 towards the valve body 1. The displacement of the connecting frame 6 pushes the insertion pipe 4 to move outward of the valve body 1, so that the inner liner of the insertion pipe 4 is disengaged from the insertion interface of the sealing plate 3. After the insertion pipe 4 is completely disengaged, the sealing plate 3 is released from constraint and can be directly removed and replaced.

[0042] In summary: The quick-change sealing ring buckle of this butterfly valve is connected to the insertion tube 4 by a key through the transmission rod 5. The key connection replaces the traditional threaded fixing, avoiding repeated disassembly and assembly of threaded components, making the transmission more stable and reliable. At the same time, the direct plug-in design eliminates the flange or threaded locking steps, reducing the complexity of disassembly and assembly of the sealing ring.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change sealing ring snap for a butterfly valve, comprising a valve body (1); characterized in that A drive motor (2) is fixedly connected to the top of the valve body (1). A rotatable sealing plate (3) is embedded inside the valve body (1). A plug tube (4) is provided at both the top and bottom of the valve body (1). The inner liner of the plug tube (4) passes through the valve body (1) and is inserted into the surface of the sealing plate (3). A drive rod (5) is fixedly connected to the output end of the drive motor (2). The end of the drive rod (5) away from the drive motor (2) extends into the interior of the top plug tube (4) and is keyed to the top plug tube (4).

2. The quick-change seal ring clasp of a butterfly valve according to claim 1, characterized in that: The valve body (1) is provided with a connecting frame (6) at both the top and bottom. The inner side of the connecting frame (6) is in contact with the surface of the insertion pipe (4). The valve body (1) is provided with an adjustment structure on the left side. The adjustment structure can use the connecting frame (6) to control the insertion pipe (4) to move to the outside of the valve body (1) and disengage from the sealing plate (3).

3. The quick-change seal ring clamp for butterfly valves of claim 1, wherein: The adjustment structure includes a screw (7) movably connected to the left side of the valve body (1) via a bearing. The surface of the screw (7) is threaded with a screw sleeve (8). Both sides of the screw sleeve (8) are movably connected with cranks (9) via pins. The side of the crank (9) away from the screw sleeve (8) extends to the inside of the connecting frame (6) and is movably connected to the connecting frame (6) via a pin.

4. The quick-change seal ring clamp for butterfly valves of claim 3, wherein: Guide rods (10) are fixedly connected to the left side of the top and bottom of the valve body (1). The side of the guide rod (10) away from the valve body (1) passes through the connecting frame (6) and is slidably connected to the connecting frame (6).

5. The quick-change seal ring clamp for butterfly valves of claim 3, wherein: Limiting rings (11) are fixedly connected to both sides of the surface of the insertion tube (4). The limiting rings (11) are located on both sides of the connecting frame (6) and are slidably connected to the connecting frame (6).

6. The quick-change seal ring clamp for butterfly valves of claim 3, wherein: The screw (7) is fitted with a support frame (12), both ends of which are fixedly connected to the left side of the valve body (1). The left end of the screw (7) extends through to the left side of the support frame (12) and is fixedly connected to a wheel (13).

7. The quick-change seal ring clamp for butterfly valves of claim 6, wherein: The support frame (12) is hollowed out, and the surface of the screw sleeve (8) is fixedly connected to a slider (14) located inside the support frame (12), and the slider (14) is slidably connected to the support frame (12).

8. The quick-change seal ring clamp for butterfly valves of claim 3, wherein: A spring plate (15) is fixedly connected to the inner side of the crank (9). The side of the spring plate (15) away from the crank (9) is in contact with the surface of the connecting frame (6). The spring plate (15) is elastic.

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