Butterfly valve structure convenient to assemble and disassemble

Abstract

The butterfly valve structure convenient to assemble and disassemble comprises a valve body, a valve rod is rotationally connected to the valve body in the vertical direction, the upper end of the valve rod penetrates through the upper end of the valve body and extends out of the outer wall of the valve body, a limiting plate is arranged at the bottom in the valve body in the vertical direction, and the section of the limiting plate is the same as that of the valve rod; the butterfly plate is in a disc shape, holes are formed in the outer surfaces of the two sides of the butterfly plate, threads are formed in the holes, the outer surfaces of the two sides of the butterfly plate are movably connected with four identical sealing strips, the outer surfaces of the sealing strips are connected with three fixing blocks through the hole threads, and the outer surfaces of the fixing blocks are far larger than the outer surfaces of the holes. By arranging the sealing strip and the fixing block, the damaged and invalid sealing strip can be rapidly replaced, the maintenance efficiency is improved, the butterfly valve can be rapidly disassembled and installed in cooperation with the valve deck and the round hole, and the use efficiency of the butterfly valve can be improved.

Description

Technical Field

[0001] This invention relates to the field of butterfly valve technology, and in particular to a butterfly valve structure that is easy to install and disassemble. Background Technology

[0002] Butterfly valves are widely used in pipeline systems. Also known as flap valves, they are simple regulating valves that can also be used for on / off control of low-pressure pipeline media. Sealed butterfly valves mainly function as shut-off and throttling valves in pipelines. The opening and closing element of a butterfly valve is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve the purpose of opening, closing, or regulation. Sealed butterfly valves are suitable for pipelines transporting various corrosive and non-corrosive fluid media in generators, gas, steam, natural gas, city gas, hot and cold air, chemical smelting engineering, and power generation and environmental protection systems, used for regulating and cutting off the flow of media.

[0003] While butterfly valves are very popular in many industrial applications, they also have some drawbacks. For example, the butterfly plate and sealing ring of a butterfly valve are prone to wear when handling fluids containing particles, which may lead to poor sealing or deterioration of valve performance with long-term use. At the same time, butterfly valves are relatively complicated to install and disassemble, and when the sealing ring needs to be replaced or repaired, this can lead to a lot of wasted time and reduce the efficiency of butterfly valve use. Summary of the Invention

[0004] The purpose of this invention is to provide a butterfly valve structure that is easy to install and disassemble, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, a convenient butterfly valve structure is provided, comprising a valve body, which is annular in shape. A valve stem is vertically rotatably connected to the valve body, with its upper end penetrating the upper end of the valve body and extending out of the outer wall of the valve body. A limit hole is vertically formed at the bottom of the valve body, with the cross-section of the limit hole being the same as that of the valve stem, allowing the valve stem to rotate within the limit hole. A butterfly plate is fixedly connected to both sides of the outer surface of the valve stem. The butterfly plate is disc-shaped, with holes on both sides of its outer surface, each hole having threads. Four identical sealing strips are movably connected to both sides of the outer surface of the butterfly plate. Three fixing blocks are threadedly connected to the outer surface of the sealing strips through the holes, with the outer surface of the fixing blocks being much larger than the outer surface of the holes. The sealing strips are provided to prevent the butterfly plate from reducing its frictional sealing effect over time, and the fixing blocks are provided to facilitate the fixing of the sealing strips. A first connecting flange is fixedly connected to the left end face of the valve body, with six identical openings on its side, each opening having threads on its inner side. A second connecting flange is fixedly connected to the right end face of the valve body, with six identical openings on its side. The connecting flange is provided for easy connection to pipelines. A valve cover is horizontally positioned at the top of the valve body. Circular holes are vertically positioned at both ends of the valve cover, with threads inside. These holes extend downwards into the valve body. Four positioning pins are vertically fixed to the valve body below the valve cover, penetrating the upper surface of the valve cover and extending outwards. The circular holes facilitate the fixing of the valve cover with screws.

[0006] Furthermore, a limiting plate is fixedly connected to the upper end of the valve body extending from the upper surface of the valve stem, and the central axis of the limiting plate is aligned with the central axis of the valve stem.

[0007] Furthermore, a limiting ring is fixedly connected to the upper surface of the limiting plate. The limiting ring is annular, and a gear is fixedly connected to the center of the upper surface of the limiting plate. The central axis of the gear is aligned with the central axis of the limiting plate. The gear is provided to facilitate fixing to the valve stem, thereby enabling the lever to control the rotation of the valve stem.

[0008] Furthermore, a handle is slidably connected to the upper surface of the limiting plate. The end of the handle near the limiting plate is annular, and the inside of this end has teeth that mesh with a gear. The handle is designed to facilitate meshing with the gear, allowing control of the gear and valve stem to drive the butterfly plate and thus control the butterfly valve.

[0009] The beneficial effects of this invention are as follows: by setting a sealing strip and a fixing block, the damaged or failed sealing strip can be quickly replaced, which speeds up the maintenance efficiency. In conjunction with the valve cover and the round hole, the butterfly valve can be quickly disassembled and installed, which can improve the efficiency of the butterfly valve.

[0010] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a three-dimensional view of the overall structure of a butterfly valve structure that is easy to install and disassemble according to the present invention; Figure 2 This is a top view of the overall structure of a butterfly valve structure that is easy to assemble and disassemble according to the present invention; Figure 3 This is a side view of the overall structure of a butterfly valve structure that is easy to assemble and disassemble according to the present invention. Figure 4 This is a cross-sectional view of a butterfly valve structure that is easy to assemble and disassemble according to the present invention.

[0012] Legend: 1. Valve body; 2. Valve cover; 3. No. 1 connecting flange; 4. No. 2 connecting flange; 5. Round hole; 6. Positioning pin; 7. Opening; 8. Valve stem; 9. Butterfly plate; 10. Sealing strip; 11. Fixing block; 12. Limiting plate; 13. Limiting ring; 14. Gear; 15. Handle; 16. Limiting hole. Detailed Implementation

[0013] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0014] Reference Figures 1 to 4This invention discloses a convenient butterfly valve structure, comprising a valve body 1, which is annular in shape. A valve stem 8 is rotatably connected to the valve body 1 in a vertical direction. The upper end of the valve stem 8 passes through the upper end of the valve body 1 and extends out of the outer wall of the valve body 1. A limiting hole 16 is vertically opened at the bottom of the valve body 1 in a vertical direction. The cross-section of the limiting hole 16 is the same as that of the valve stem 8, allowing the valve stem 8 to rotate within the limiting hole 16. A butterfly plate 9 is fixedly connected to both sides of the outer surface of the valve stem 8. The butterfly plate 9 is disc-shaped and has holes on both sides of its outer surface. The holes are threaded. Four identical sealing strips 10 are movably connected to both sides of the outer surface of the butterfly plate 9. Three fixing blocks 11 are threadedly connected to the outer surface of the sealing strips 10 through the holes. The outer surface of the fixing blocks 11 is much larger than the outer surface of the holes. The lower end of the valve stem 8 is placed in the limiting hole 16 and can be rotated to control the flow of media or to isolate it. The valve stem 8 is fixed in the center of the butterfly plate 9, dividing the butterfly plate 9 into four surfaces. Each of the four surfaces is fixed with a sealing strip 10. The surface of the butterfly plate 9 has threaded holes, which can be used to fix the sealing strips 10 through the fixing block 11. The number of sealing strips 10 has increased and the area has decreased, which is conducive to the efficient replacement of the sealing strips 10 that have problems. A first connecting flange 3 is fixedly connected to the left end face of the valve body 1. The first connecting flange 3 has six openings 7 of the same specification on its side. The inner side of the openings 7 has threads. A second connecting flange 4 is fixedly connected to the right end face of the valve body 1. The second connecting flange 4 has six openings 7 of the same specification on its side. It is connected to the pipeline through the connecting flange. A valve cover 2 is horizontally positioned at the upper end of the valve body 1. Circular holes 5 are vertically positioned at both ends of the valve cover 2, and threads are threaded inside the holes 5, extending downwards into the valve body 1. Four positioning pins 6 are vertically fixed to the valve body 1 below the valve cover 2, penetrating the upper surface of the valve cover 2 and extending outwards. The valve cover 2 can be threaded onto the valve body 1 using screws. The threads can be used to fix the valve cover 2 through the circular holes 5, or to open the valve cover 2 for installation or maintenance.

[0015] A limiting plate 12 is fixedly connected to the upper end of the valve body 1, extending from the upper surface of the valve stem 8. The central axis of the limiting plate 12 is aligned with the central axis of the valve stem 8.

[0016] A limiting ring 13 is fixedly connected to the upper surface of the limiting plate 12. The limiting ring 13 is annular, and a gear 14 is fixedly connected to the center of the upper surface of the limiting plate 12. The central axis of the gear 14 is aligned with the central axis of the limiting plate 12. The limiting ring 13 is used to fix the position of the grip 15.

[0017] A handle 15 is slidably connected to the upper surface of the limiting plate 12. The end of the handle 15 near the limiting plate 12 is annular, and the inside of the end of the handle 15 near the limiting plate 12 has teeth that mesh with the gear 14. The end of the handle 15 meshes with the gear 14, and the handle 15 can be rotated to make the gear 14 rotate, thereby driving the valve stem 8 and the butterfly plate 9 to rotate together to control the working state of the butterfly valve.

[0018] Working principle: During installation or disassembly and maintenance, rotating the handle 15 causes the gear 14 to rotate, which in turn rotates the valve stem 8 and the butterfly plate 9 together. This allows the butterfly plate 9 to overlap with the valve cover 2 in the vertical direction. Then, the screw can be removed through the round hole 5, and the valve cover 2 and valve stem 8, along with the butterfly plate 9 and the sealing strip 10 on it, can be removed upwards. The sealing strip 10 is fixed by the threaded fixing block 11, which allows for convenient installation or disassembly of the butterfly valve and simultaneous processing of the sealing strip 10.

[0019] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A butterfly valve structure for easy assembly and disassembly, comprising a valve body (1), characterized in that, The valve body (1) is annular. A valve stem (8) is vertically rotatably connected to the valve body (1). The upper end of the valve stem (8) passes through the upper end of the valve body (1) and extends out of the outer wall of the valve body (1). A limiting hole (16) is vertically opened at the bottom of the valve body (1). The cross-section of the limiting hole (16) is the same as that of the valve stem (8). The valve stem (8) can rotate inside the limiting hole (16). A butterfly plate (9) is fixedly connected to both sides of the outer surface of the valve stem (8). The butterfly plate (9) is disc-shaped. Holes are opened on both sides of the outer surface of the butterfly plate (9). Threads are opened inside the holes. Four identical sealing strips (10) are movably connected to both sides of the outer surface of the butterfly plate (9). Three fixing blocks (11) are threadedly connected to the outer surface of the sealing strips (10) through the holes. The fixing blocks (11) are externally... The surface is much larger than the outer surface of the hole. A No. 1 connecting flange (3) is fixedly connected to the left end face of the valve body (1). The No. 1 connecting flange (3) has six openings (7) of the same specification on its side. The openings (7) have threads on their inner sides. A No. 2 connecting flange (4) is fixedly connected to the right end face of the valve body (1). The No. 2 connecting flange (4) has six openings (7) of the same specification on its side. A valve cover (2) is opened horizontally at the upper end of the valve body (1). A round hole (5) is opened vertically at both ends of the valve cover (2). The round hole (5) has threads inside. The round hole (5) extends downward into the interior of the valve body (1). Four positioning pins (6) are fixedly connected vertically below the valve cover (2) of the valve body (1). The positioning pins (6) penetrate the upper surface of the valve cover (2) and extend outward.

2. The easy-to-assemble and disassemble butterfly valve structure according to claim 1, characterized in that, The upper surface of the valve stem (8) extends out of the upper end of the valve body (1) and is fixedly connected to a limiting plate (12). The central axis of the limiting plate (12) is aligned with the central axis of the valve stem (8).

3. The easy-to-assemble and disassemble butterfly valve structure according to claim 2, characterized in that, A limiting ring (13) is fixedly connected to the upper surface of the limiting plate (12). The limiting ring (13) is annular. A gear (14) is fixedly connected to the center of the upper surface of the limiting plate (12). The direction of the central axis of the gear (14) is consistent with the direction of the central axis of the limiting plate (12).

4. The easy-to-assemble and disassemble butterfly valve structure according to claim 3, characterized in that, A handle (15) is slidably connected to the upper surface of the limiting plate (12). The end of the handle (15) near the limiting plate (12) is annular. The handle (15) has teeth inside the end near the limiting plate (12) and meshes with the gear (14).

Images