Welding butterfly valve

Abstract

The utility model relates to a welding butterfly valve which comprises a butterfly valve body, a connecting pipe is fixedly connected to the right end of the butterfly valve body, a partition plate is fixedly connected to the inner wall of the connecting pipe, two circulation holes are formed in the middle of the partition plate, and the two circulation holes are oppositely arranged left and right. A first connecting rod is fixedly connected to the middle of the top face of the inner wall of the connecting pipe, through mutual cooperation of all the components, a medium pushes the blocking block upwards to be pushed out of the circulation hole, the medium flows through the circulation hole and then flows to the butterfly valve body, when the blocking block is pushed upwards, the spring is squeezed, and part of kinetic energy of the medium is converted into potential energy of the spring; and the fixing rod abuts against the blocking block, so that the blocking block is stably inserted into the circulation hole and cannot move upwards, the blocking block cannot be jacked up by the medium to pass through the circulation hole, and therefore the sealing effect after the butterfly valve body is closed is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a welded butterfly valve. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by its closing element (valve disc or butterfly plate) being a disk that rotates around a valve shaft to open and close. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. In pipelines, they primarily function as shut-off and throttling devices. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body, thereby achieving opening, closing, or regulation.

[0003] When the medium in the pipeline flows into the butterfly valve, it will inevitably collide and impact directly with the valve disc. This impact, especially when the medium velocity is high or contains particulate impurities, will exert significant physical pressure on the seals on the valve disc. This may lead to scratches, deformation, or even cracking of the sealing surface. Utility Model Content

[0004] The purpose of this invention is to provide a welded butterfly valve to solve the problems mentioned in the background art.

[0005] The present invention relates to a welded butterfly valve, comprising a butterfly valve body, a connecting pipe fixedly connected to the right end of the butterfly valve body, a partition fixedly connected to the inner wall of the connecting pipe, two flow holes formed in the middle of the partition, the two flow holes being arranged opposite each other, a first connecting rod fixedly connected to the middle of the top surface of the inner wall of the connecting pipe, the lower end of the first connecting rod being fixedly connected to the middle of the top surface of the partition, a connecting plate movably sleeved on the middle of the surface of the first connecting rod, second connecting rods fixedly connected to the left and right sides of the bottom surface of the connecting plate, a blocking block fixedly connected to the bottom surface of each of the two second connecting rods, the bottom of the two blocking blocks being respectively inserted into adjacent flow holes, a spring sleeved on the upper end of the surface of each of the first connecting rods, one end of the spring being fixedly connected to the top surface of the inner wall of the connecting pipe, and the other end of the spring being fixedly connected to the top surface of the connecting plate.

[0006] In one embodiment, a connecting box is fixedly connected to the middle of the top surface of the connecting tube, a screw is threadedly connected to the top of the connecting box, a fixing plate is movably connected to the top of the inner cavity of the connecting box, the lower end face of the screw is bearing-connected to the middle of the top surface of the fixing plate, fixing rods are fixedly connected to the left and right sides of the bottom surface of the fixing plate, two movable holes are opened in the middle of the top of the connecting tube, the two movable holes are arranged opposite each other, the lower ends of the two fixing rods are movably sleeved in the adjacent movable holes and penetrate to the top of the inner cavity of the connecting tube, the lower ends of the two fixing rods are respectively located on the left and right sides of the first connecting rod, and a rotating handle is fixedly connected to the top surface of the screw.

[0007] In one embodiment, a sealing sleeve is fixedly fitted inside each of the movable holes, and a sealing ring is fixedly connected inside the sealing sleeve. The lower ends of the two fixed rods are respectively movably fitted inside adjacent sealing sleeves.

[0008] In one embodiment, a first sealing strip is fixedly connected to each of the flow holes, and a second sealing strip is fixedly connected to the bottom of the side surface of each of the plug blocks.

[0009] In one embodiment, the right end of the butterfly valve body is the inlet end, the left end of the butterfly valve body is the outlet end, the left end of the butterfly valve body is fixedly connected to a first flange, and the right end of the connecting pipe is fixedly connected to a second flange.

[0010] In one embodiment, connecting sleeves are fixedly connected to the four corners of the top surface of the connecting plate, and a guide rod is movably sleeved inside each connecting sleeve. The top surface of the guide rod is fixedly connected to the top surface of the inner wall of the connecting pipe.

[0011] The beneficial effects provided by this utility model are:

[0012] Through the cooperation of various components, the medium pushes the block upwards and out of the flow hole. The medium flows through the flow hole and then into the butterfly valve body. When the block is pushed upwards, the spring is compressed, converting part of the kinetic energy of the medium into the potential energy of the spring, thereby buffering the medium and reducing the impact force of the medium on the valve disc inside the butterfly valve body. The fixing rod holds the block in place, making the block stably inserted in the flow hole and unable to move upwards, preventing the medium from pushing the block out of the flow hole, thus improving the sealing effect after the butterfly valve body is closed. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention;

[0014] Figure 2 This is a main sectional view of the present invention;

[0015] Figure 3 for Figure 2Enlarged view of the structure at point B;

[0016] Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle;

[0017] Figure 5 This is a top view of the connecting plate.

[0018] In the attached diagram: 1. Butterfly valve body; 2. Connecting pipe; 3. Baffle plate; 4. Flow hole; 5. First connecting rod; 6. Connecting plate; 7. Second connecting rod; 8. Block; 9. Spring; 10. Connecting box; 11. Screw; 12. Fixing plate; 13. Fixing rod; 14. Movable hole; 15. Rotary handle; 16. Sealing sleeve; 17. First sealing strip; 18. Second sealing strip; 19. First flange; 20. Second flange; 21. Connecting sleeve; 22. Guide rod. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0020] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0021] In one embodiment, such as Figure 1-5As shown, a welded butterfly valve includes a butterfly valve body 1. A connecting pipe 2 is fixedly connected to the right end of the butterfly valve body 1. A partition 3 is fixedly connected to the inner wall of the connecting pipe 2. Two flow holes 4 are opened in the middle of the partition 3. The two flow holes 4 are arranged opposite each other. A first connecting rod 5 is fixedly connected to the middle of the top surface of the inner wall of the connecting pipe 2. The lower end face of the first connecting rod 5 is fixedly connected to the middle of the top surface of the partition 3. A connecting plate 6 is movably sleeved on the middle of the surface of the first connecting rod 5. Second connecting rods 7 are fixedly connected to the left and right sides of the bottom surface of the connecting plate 6. A block 8 is fixedly connected to the bottom surface of the two second connecting rods 7. The bottom of the two block 8 is respectively inserted into the adjacent flow holes 4. A spring 9 is sleeved on the upper end of the surface of each first connecting rod 5. One end of the spring 9 is fixedly connected to the top surface of the inner wall of the connecting pipe 2, and the other end of the spring 9 is fixedly connected to the top surface of the connecting plate 6.

[0022] In order to ensure that the plug 8 is firmly inserted into the flow hole 4 and blocks the flow hole 4, a connecting box 10 is fixedly connected to the middle of the top surface of the connecting pipe 2. A screw 11 is threadedly connected to the top of the connecting box 10. A fixing plate 12 is movably connected to the top of the inner cavity of the connecting box 10. The lower end face of the screw 11 is bearing connected to the middle of the top surface of the fixing plate 12. Fixing rods 13 are fixedly connected to the left and right sides of the bottom surface of the fixing plate 12. Two movable holes 14 are opened in the middle of the top of the connecting pipe 2. The two movable holes 14 are arranged opposite each other. The lower ends of the two fixing rods 13 are movably sleeved in the adjacent movable holes 14 and penetrate to the top of the inner cavity of the connecting pipe 2. The lower ends of the two fixing rods 13 are located on the left and right sides of the first connecting rod 5, respectively. A rotating handle 15 is fixedly connected to the top surface of the screw 11.

[0023] To improve the sealing performance of the fixed rod 13 connected in the movable hole 14, a sealing sleeve 16 is fixedly fitted in each movable hole 14, and a sealing ring is fixedly connected in the sealing sleeve 16. The lower ends of the two fixed rods 13 are respectively movably fitted in the adjacent sealing sleeves 16.

[0024] In order to improve the sealing performance of the plug 8 inserted into the flow hole 4, a first sealing strip 17 is fixedly connected in each flow hole 4, and a second sealing strip 18 is fixedly connected to the bottom of the side surface of each plug 8.

[0025] To facilitate the connection of the butterfly valve body 1 and the connecting pipe 2 to the pipeline, the right end of the butterfly valve body 1 is the water inlet end, the left end of the butterfly valve body 1 is the water outlet end, the left end of the butterfly valve body 1 is fixedly connected to the first flange 19, and the right end of the connecting pipe 2 is fixedly connected to the second flange 20.

[0026] To prevent the connecting plate 6 from rotating and causing the block 8 to shift and become misaligned with the flow hole 4, connecting sleeves 21 are fixedly connected to the four corners of the top surface of the connecting plate 6. Each connecting sleeve 21 is movably fitted with a guide rod 22, and the top surface of the guide rod 22 is fixedly connected to the top surface of the inner wall of the connecting pipe 2.

[0027] Working Principle: In use, the left end of the butterfly valve body 1 is connected to the pipeline via the first flange 19, and the right end of the connecting pipe 2 is connected to the pipeline via the second flange 20. The medium first enters the connecting pipe 2 from the right end, and then pushes the plug 8 upward, pushing it out of the flow hole 4, allowing the medium to flow through the flow hole 4 and then flow to the butterfly valve body 1. When the plug 8 is pushed upward, it drives the second connecting rod 7 to move upward, which in turn drives the connecting plate 6 to move upward. The upward movement of the connecting plate 6 compresses the spring 9, converting some of the kinetic energy of the medium into the potential energy of the spring 9, thereby buffering the medium and reducing the impact of the medium on the butterfly valve body 1. The impact force of the internal valve disc protects the valve disc inside the butterfly valve body 1, extending the service life of the valve disc and its surface seals. When the butterfly valve body 1 is closed, the plug 8 descends and inserts into the flow hole 4, blocking the flow hole 4. At this time, turning the handle 15 causes the screw 11 to rotate. The screw 11 rotates and moves downward, causing the fixing plate 12 to descend. The fixing plate 12 then causes the fixing rod 13 to descend. After the fixing rod 13 descends, its bottom surface fits against the top surface of the connecting plate 6, thus holding the plug 8 in place. This ensures that the plug 8 is stably inserted into the flow hole 4 and cannot move upward, preventing the medium from lifting the plug 8 and allowing it to pass through the flow hole 4, thereby improving the sealing effect after the butterfly valve body 1 is closed.

[0028] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A welded butterfly valve, characterized in that, The device includes a butterfly valve body. A connecting pipe is fixedly connected to the right end of the butterfly valve body. A partition is fixedly connected to the inner wall of the connecting pipe. Two flow holes are opened in the middle of the partition, and the two flow holes are arranged opposite each other. A first connecting rod is fixedly connected to the middle of the top surface of the inner wall of the connecting pipe. The lower end of the first connecting rod is fixedly connected to the middle of the top surface of the partition. A connecting plate is movably sleeved on the middle of the surface of the first connecting rod. Second connecting rods are fixedly connected to the left and right sides of the bottom surface of the connecting plate. A blocking block is fixedly connected to the bottom surface of each of the two second connecting rods. The bottom of the two blocking blocks is respectively inserted into the adjacent flow holes. A spring is sleeved on the upper end of the surface of each of the first connecting rods. One end of the spring is fixedly connected to the top surface of the inner wall of the connecting pipe, and the other end of the spring is fixedly connected to the top surface of the connecting plate.

2. The welded butterfly valve as described in claim 1, characterized in that: A connecting box is fixedly connected to the middle of the top surface of the connecting tube. A screw is threadedly connected to the top of the connecting box. A fixing plate is movably connected to the top of the inner cavity of the connecting box. The lower end face of the screw is bearing-connected to the middle of the top surface of the fixing plate. Fixing rods are fixedly connected to the left and right sides of the bottom surface of the fixing plate. Two movable holes are opened in the middle of the top of the connecting tube. The two movable holes are arranged opposite each other. The lower ends of the two fixing rods are movably sleeved in the adjacent movable holes and penetrate to the top of the inner cavity of the connecting tube. The lower ends of the two fixing rods are respectively located on the left and right sides of the first connecting rod. A rotating handle is fixedly connected to the top surface of the screw.

3. A welded butterfly valve as described in claim 2, characterized in that: Each of the movable holes is fixedly fitted with a sealing sleeve, and a sealing ring is fixedly connected inside the sealing sleeve. The lower ends of the two fixed rods are respectively movably fitted into the adjacent sealing sleeves.

4. A welded butterfly valve as described in claim 1, characterized in that: A first sealing strip is fixedly connected to each of the flow holes, and a second sealing strip is fixedly connected to the bottom of the side surface of each of the plug blocks.

5. A welded butterfly valve as described in claim 1, characterized in that: The right end of the butterfly valve body is the inlet end, the left end of the butterfly valve body is the outlet end, the left end of the butterfly valve body is fixedly connected to a first flange, and the right end of the connecting pipe is fixedly connected to a second flange.

6. A welded butterfly valve as described in claim 1, characterized in that: Connecting sleeves are fixedly connected to the four corners of the top surface of the connecting plate. A guide rod is movably fitted inside each connecting sleeve. The top surface of the guide rod is fixedly connected to the top surface of the inner wall of the connecting pipe.

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