Butterfly valve

Abstract

The utility model discloses a butterfly valve which comprises a valve body, a valve rod is arranged in the valve body in a penetrating mode, the valve rod is connected with a butterfly plate in a sleeved mode, the valve body is further connected with a valve pipe, and the outer side of the valve pipe is connected with a metal framework net in a sleeved mode. The utility model has the advantages of high support strength to resist negative pressure.

Description

Technical Field

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

[0002] A butterfly valve is a simple regulating valve, also called a flap valve. It can be used for the on / off control of low-pressure pipeline media. A butterfly valve is a type of valve whose closing element is a disc that rotates around the valve shaft to achieve opening and closing. Existing butterfly valves achieve on / off control of low-pressure pipeline media through the combined action of the valve body, valve stem, and handwheel. Turning the handwheel causes the valve stem to rotate, and the rotation of the valve stem causes the disc to rotate, thereby realizing the flow of media inside the valve body.

[0003] In existing technologies, butterfly valves are prone to corrosion during long-term switching and control of the medium in the pipeline. Corrosion of butterfly valves can easily lead to contamination of the medium. Furthermore, if the corrosion of a butterfly valve is too severe, it can easily cause difficulty in rotating the valve stem, resulting in damage to the entire butterfly valve. Therefore, fluoroplastic structures are used. While this structure has strong corrosion resistance, it has low strength and therefore needs improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a butterfly valve to solve the problems mentioned in the background art, which has the advantages of high support strength to resist negative pressure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a butterfly valve, including a valve body, a valve stem passing through the valve body, a butterfly plate sleeved on the valve stem, and a valve pipe connected to the valve body, with a metal skeleton mesh sleeved on the outside of the valve pipe.

[0006] By adopting the above technical solution, during the processing of fluoroplastic butterfly rings, a metal skeleton mesh is embedded on the outer diameter of the butterfly ring and integrated into the butterfly ring liner to provide support for the fluoroplastic butterfly ring and resist negative pressure.

[0007] As a further embodiment of this utility model: the metal skeleton mesh is configured as two and distributed at both ends of the valve pipe.

[0008] As a further embodiment of this utility model: the valve body includes a first valve body and a second valve body, and a first support plate and a second support plate are integrally connected to the sides of the first valve body and the second valve body facing each other, and the first support plate and the second support plate are connected by bolts.

[0009] By adopting the above technical solution, the first valve body and the second valve body are connected by bolts between the first support plate and the second support plate.

[0010] As a further improvement of this utility model: the valve body is integrally connected with support portions located at both ends of the valve stem, and the sides of the support portions are integrally connected with support ribs.

[0011] By adopting the above technical solution, the support structure increases the stability of the valve stem during rotation.

[0012] As a further improvement of this utility model: flange portions are integrally connected to both sides of the valve body, and a connecting plate is integrally connected between the flange portions and the support portion.

[0013] By adopting the above technical solution, the connecting plate is configured with a connecting flange and a support, thereby increasing the strength of the valve body.

[0014] As a further improvement of this utility model, a reinforcing plate is provided on the inner side of the butterfly plate.

[0015] By adopting the above technical solution, the reinforcement plate increases the strength of the butterfly plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] During the processing of fluoroplastic butterfly rings, a metal skeleton mesh is embedded on the outer diameter of the butterfly ring and integrated into the butterfly ring liner to provide support for the fluoroplastic butterfly ring and resist negative pressure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0019] Figure 2 This is a structural schematic diagram from another perspective of the embodiment;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure after removing the butterfly plate;

[0021] Figure 4 This is a schematic diagram of the structure of the embodiment without the connection between the first valve body and the second valve body.

[0022] In the diagram: 1. Flange; 2. Valve stem; 3. Butterfly plate; 4. Valve pipe; 5. Metal skeleton mesh; 6. First valve body; 7. Second valve body; 8. First support plate; 9. Second support plate; 10. Support part; 11. Support rib; 12. Reinforcing plate; 13. Connecting plate; 14. Sealing ring; 15. Through hole. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0026] In this embodiment of the utility model,

[0027] A type of butterfly valve, such as Figures 1-4 As shown, the valve includes a valve body, a valve stem 2 passing through the valve body, a butterfly plate 3 sleeved on the valve stem 2, a valve pipe 4 connected to the valve body, and a metal skeleton mesh 5 sleeved on the outside of the valve pipe 4.

[0028] The metal skeleton mesh 5 is configured as two and distributed at both ends of the valve pipe 4.

[0029] The valve body includes a first valve body 6 and a second valve body 7. A first support plate 8 and a second support plate 9 are integrally connected to the sides of the first valve body 6 and the second valve body 7 facing each other. The first support plate 8 and the second support plate 9 are connected by bolts.

[0030] The valve body is integrally connected to the support portions 10 located at both ends of the valve stem 2, and the side of the support portion 10 is integrally connected to the support rib 11.

[0031] Flanges 1 are integrally connected to both sides of the valve body, and a connecting plate 13 is integrally connected between the flanges 1 and the support 10.

[0032] A reinforcing plate 12 is provided on the inner side of the butterfly plate 3.

[0033] The reinforcing plate 12 is provided with multiple through holes 15 to increase the deformation capacity of the reinforcing plate 12, and multiple sealing rings 14 are circumferentially sleeved on the valve stem 2.

[0034] Working principle:

[0035] During the processing of fluoroplastic butterfly rings, a metal skeleton mesh 5 is embedded on the outer diameter of the butterfly ring and integrated into the butterfly ring liner to provide support for the fluoroplastic butterfly ring and resist negative pressure.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A butterfly valve, comprising a valve body, wherein a valve stem (2) is disposed within the valve body, characterized in that: The valve stem (2) is fitted with a butterfly plate (3), and the valve body is also connected to a valve pipe (4), with a metal skeleton mesh (5) fitted on the outside of the valve pipe (4).

2. The butterfly valve according to claim 1, characterized in that: The metal skeleton mesh (5) is configured as two and distributed at both ends of the valve pipe (4).

3. The butterfly valve according to claim 1, characterized in that: The valve body includes a first valve body (6) and a second valve body (7). The first valve body (6) and the second valve body (7) are integrally connected to a first support plate (8) and a second support plate (9) on opposite sides of each other. The first support plate (8) and the second support plate (9) are connected by bolts.

4. The butterfly valve according to claim 3, characterized in that: The valve body is integrally connected to the support portions (10) at both ends of the valve stem (2), and the side of the support portion (10) is integrally connected to the support rib (11).

5. The butterfly valve according to claim 4, characterized in that: The valve body is integrally connected to both sides of the flange (1), and the flange (1) and the support (10) are integrally connected to the connecting plate (13).

6. The butterfly valve according to claim 1, characterized in that: A reinforcing plate (12) is provided on the inner side of the butterfly plate (3).

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