Bidirectional sealing butterfly valve

Abstract

The bidirectional sealing butterfly valve comprises a valve body, first flanges are symmetrically and fixedly connected to the outer side of the valve body, a fixing ring is fixedly connected to one side of each first flange, a connecting ring is connected to the outer side of each fixing ring in a threaded mode, an annular groove is formed in each connecting ring, and limiting rods are symmetrically and fixedly connected to one side of each first flange; the utility model relates to the technical field of butterfly valves, the bidirectional sealing butterfly valve is provided with a second sealing ring, a fixing ring, a connecting ring, an annular groove, a connecting frame, a limiting rod, a protective ring and a first sealing ring, so that the function of sealing the joint of the valve body and a pipeline is achieved, the sealing effect of the joint of the pipeline is enhanced, and leakage is prevented; according to the pipeline joint sealing device, by arranging the inclined face, the sliding base, the spring, the inserting rod, the positioning frame, the positioning block and the connecting groove, the function of driving the inserting rod to move into the connecting groove when the pipeline joint is sealed is achieved, the pipeline joint can be reinforced, and the stabilizing effect between pipelines is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically a bidirectional sealing butterfly valve. Background Technology

[0002] A bidirectional sealing butterfly valve is a type of valve that maintains a good sealing effect when the medium flows in both forward and reverse directions. It is mainly used in petroleum, chemical, fertilizer, power plant, metallurgy, papermaking, and light industry sectors as a component for pipeline shut-off and regulation, effectively preventing media leakage and ensuring the safe operation of the system.

[0003] Existing bidirectional sealing butterfly valves are typically connected to pipelines via flanges. When installing between flanges, the threaded holes must be aligned before bolts can be installed. This installation process can easily cause misalignment between the threaded holes, and the sealing effect at the pipeline connection is usually only average, making them inconvenient to use. Therefore, we propose a bidirectional sealing butterfly valve. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a bidirectional sealing butterfly valve, which solves the problem that bidirectional sealing butterfly valves are usually connected to pipelines via flanges. When installing between flanges, the threaded holes need to be aligned before bolts can be installed. During installation, the threaded holes are prone to misalignment, and the sealing effect at the pipeline connection is usually not very good.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A bidirectional sealing butterfly valve includes a valve body. A first flange is symmetrically fixedly connected to the outer side of the valve body. A fixing ring is fixedly connected to one side of the first flange. A connecting ring is threadedly connected to the outer side of the fixing ring. An annular groove is formed inside the connecting ring. A limit rod is symmetrically fixedly connected to one side of the first flange. A connecting frame is slidably connected to the outer side of the limit rod. The connecting frame is slidably connected to the annular groove. A protective ring is fixedly connected to one side of the connecting frame. A first sealing ring is provided on the inner wall of the protective ring. A positioning frame is symmetrically fixedly connected to one side of the first flange. A second flange is provided on the side of the first flange away from the positioning frame. The second flange has a symmetrical fixed connection on one side to a positioning block that works with the positioning frame. A connecting pipe is fixedly connected on the side of the second flange away from the positioning block. In use, when connecting the valve body and the pipeline, the positioning block is pushed into the interior of the positioning frame to position the flanges during installation and prevent misalignment between the holes. The valve body and the pipeline can be connected by multiple sets of bolts. After connection, the connecting ring is rotated, and the rotation of the connecting ring causes the connecting frame to slide along the limit rod. The connecting frame moves the protective ring to the flange connection. The first sealing ring can seal the pipeline connection to prevent leakage.

[0007] Preferably, the inner wall of the second flange is provided with a second sealing ring, which can be used to seal the space between the first flange and the second flange.

[0008] Preferably, the cross-section of the annular groove is an inverted T-shape, and the inverted T-shaped annular groove can prevent the connecting frame from detaching from the inside of the annular groove.

[0009] Preferably, a fixed frame is fixedly connected to one side of the positioning frame, and an insert rod is slidably connected inside the fixed frame. The positioning block has a connecting groove inside that works with the insert rod. By moving the insert rod into the connecting groove, the connection of the pipe can be reinforced, thus enhancing the stability between the pipes.

[0010] Preferably, a sliding seat is slidably connected to the inner wall of the fixed frame, the insertion rod is fixedly connected to the sliding seat, and a spring is sleeved on the outer side of the insertion rod and on one side of the sliding seat. The insertion rod is moved by the sliding seat, and the sliding seat is moved and reset by the spring.

[0011] Preferably, one side of the sliding seat is provided with an inclined surface. Because one side of the sliding seat is provided with an inclined surface, during the movement of the connecting frame, the connecting frame will squeeze and drive the sliding seat to move, and the sliding seat will drive the insertion rod to move.

[0012] This utility model provides a bidirectional sealing butterfly valve. Compared with the prior art, it has the following advantages:

[0013] 1. This bidirectional sealing butterfly valve achieves the function of sealing the connection between the valve body and the pipeline by setting a second sealing ring, a fixed ring, a connecting ring, an annular groove, a connecting frame, a limit rod, a protective ring, and a first sealing ring, thereby enhancing the sealing effect of the pipeline connection and preventing leakage.

[0014] 2. This bidirectional sealing butterfly valve, through the setting of inclined surface, sliding seat, spring, insert rod, positioning frame, positioning block and connecting groove, realizes the function of driving the insert rod to move into the connecting groove when sealing the pipeline connection, which can reinforce the pipeline connection and enhance the stability between pipelines. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the first flange of this utility model;

[0017] Figure 3 This is a schematic diagram of the connecting ring of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the fixing frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the second flange of this utility model.

[0020] In the diagram: 1. Valve body; 2. First flange; 3. Second flange; 4. Connecting pipe; 5. Fixing ring; 6. Connecting ring; 7. Limiting rod; 8. Connecting frame; 9. Fixing frame; 10. Positioning frame; 11. First sealing ring; 12. Protective ring; 13. Annular groove; 14. Insert rod; 15. Spring; 16. Inclined surface; 17. Sliding seat; 18. Second sealing ring; 19. Positioning block; 20. Connecting groove. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution:

[0023] A bidirectional sealing butterfly valve includes a valve body 1. A first flange 2 is symmetrically fixedly connected to the outer side of the valve body 1. A fixing ring 5 is fixedly connected to one side of the first flange 2. A connecting ring 6 is threadedly connected to the outer side of the fixing ring 5. An annular groove 13 is formed inside the connecting ring 6. A limit rod 7 is symmetrically fixedly connected to one side of the first flange 2. A connecting frame 8 is slidably connected to the outer side of the limit rod 7. The connecting frame 8 is slidably connected to the annular groove 13. A protective ring 12 is fixedly connected to one side of the connecting frame 8. A first sealing ring 11 is provided on the inner wall of the protective ring 12. A positioning frame 10 is symmetrically fixedly connected to one side of the first flange 2. A second flange 3 is provided on the side of the first flange 2 away from the positioning frame 10. A positioning block 19, which works in conjunction with the positioning frame 10, is symmetrically fixedly connected to one side of the second flange 3. A connecting pipe 4 is fixedly connected to the side of the second flange 3 away from the positioning block 19. In use, when connecting the valve body 1 and the pipeline, the positioning block 19 is pushed into the interior of the positioning frame 10 to position the flanges during installation and prevent misalignment between the holes. The valve body 1 and the pipeline can be connected by multiple sets of bolts. After connection, the connecting ring 6 is rotated. The rotation of the connecting ring 6 causes the connecting frame 8 to slide along the limiting rod 7. The connecting frame 8 moves the protective ring 12 to the flange connection. The first sealing ring 11 can seal the connection of the pipeline to prevent leakage.

[0024] Furthermore, the inner wall of the second flange 3 is provided with a second sealing ring 18, which can be used to seal the space between the first flange 2 and the second flange 3.

[0025] Furthermore, the cross-section of the annular groove 13 is an inverted T-shape, and the inverted T-shaped annular groove 13 can prevent the connecting bracket 8 from detaching from the interior of the annular groove 13.

[0026] Furthermore, a fixed frame 9 is fixedly connected to one side of the positioning frame 10, and a plug rod 14 is slidably connected inside the fixed frame 9. A connecting groove 20 that works with the plug rod 14 is opened inside the positioning block 19. By moving the plug rod 14 into the connecting groove 20, the connection of the pipe can be reinforced, thereby enhancing the stability between the pipes.

[0027] Furthermore, a sliding seat 17 is slidably connected to the inner wall of the fixed frame 9, and the insertion rod 14 is fixedly connected to the sliding seat 17. A spring 15 is sleeved on the outer side of the insertion rod 14 and on one side of the sliding seat 17. The insertion rod 14 is moved by the sliding seat 17, and the sliding seat 17 is moved and reset by the spring 15.

[0028] Furthermore, one side of the sliding seat 17 is provided with an inclined surface 16. Since one side of the sliding seat 17 is provided with an inclined surface 16, during the movement of the connecting frame 8, the connecting frame 8 will squeeze and drive the sliding seat 17 to move, and the sliding seat 17 will drive the insertion rod 14 to move.

[0029] In use, when connecting the valve body 1 and the pipeline, the positioning block 19 is pushed into the positioning frame 10 to position the valve body 19 during installation between flanges, preventing misalignment between the holes. The valve body 1 and the pipeline can be connected by multiple sets of bolts. After connection, the connecting ring 6 is rotated, which causes the connecting frame 8 to slide along the limiting rod 7. The connecting frame 8 moves the protective ring 12 to the flange connection. The first sealing ring 11 seals the pipeline connection to prevent leakage. At the same time, during the movement of the connecting frame 8, the sliding seat 17 has an inclined surface 16 on one side. As the connecting frame 8 moves, it squeezes and moves the sliding seat 17, compressing the spring 15. The sliding seat 17 moves the insertion rod 14 into the connecting groove 20, thereby reinforcing the pipeline connection and enhancing the stability between the pipelines, making it convenient to use.

[0030] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] 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 bidirectional sealing butterfly valve, comprising a valve body (1), characterized in that: A first flange (2) is symmetrically fixedly connected to the outer side of the valve body (1). A fixing ring (5) is fixedly connected to one side of the first flange (2). A connecting ring (6) is threadedly connected to the outer side of the fixing ring (5). An annular groove (13) is provided inside the connecting ring (6). A limit rod (7) is symmetrically fixedly connected to one side of the first flange (2). A connecting frame (8) is slidably connected to the outer side of the limit rod (7). The connecting frame (8) is slidably connected to the annular groove (13). A protective ring (12) is fixedly connected to one side of the connecting frame (8). A first sealing ring (11) is provided on the inner wall of the protective ring (12). A positioning frame (10) is symmetrically fixedly connected to one side of the first flange (2). A second flange (3) is provided on the side of the first flange (2) away from the positioning frame (10). A positioning block (19) that cooperates with the positioning frame (10) is symmetrically fixedly connected to one side of the second flange (3). A connecting pipe (4) is fixedly connected to the side of the second flange (3) away from the positioning block (19).

2. The bidirectional sealing butterfly valve according to claim 1, characterized in that: The inner wall of the second flange (3) is provided with a second sealing ring (18).

3. A bidirectional sealing butterfly valve according to claim 1, characterized in that: The cross-section of the annular groove (13) is an inverted T-shape.

4. A bidirectional sealing butterfly valve according to claim 1, characterized in that: A fixed frame (9) is fixedly connected to one side of the positioning frame (10), and a plug rod (14) is slidably connected inside the fixed frame (9). A connecting groove (20) is opened inside the positioning block (19) to cooperate with the plug rod (14).

5. A bidirectional sealing butterfly valve according to claim 4, characterized in that: The inner wall of the fixed frame (9) is slidably connected to a sliding seat (17), the insert rod (14) is fixedly connected to the sliding seat (17), and a spring (15) is sleeved on the outside of the insert rod (14) and on one side of the sliding seat (17).

6. A bidirectional sealing butterfly valve according to claim 5, characterized in that: The sliding seat (17) has an inclined surface (16) on one side.

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