Butt-joint flange of flat conveying pipe

Abstract

The utility model discloses a flat conveying pipe butt joint flange which comprises a first flange and a second flange, a butt joint groove is formed in one side of the first flange, a butt joint head matched with the butt joint groove is arranged on one side of the second flange, a red copper gasket is arranged in the butt joint groove, and a graphite sealing ring is embedded in the outer circumferential side wall of the butt joint head. A plurality of locking grooves are formed in the outer edges of the first flange and the second flange. According to the utility model, the red copper gasket is clamped on the butt joint plane of the flange I and the flange II, and the red copper gasket has good flexibility, so that the uneven parts on the surfaces of the flanges can be filled, and the tight attachment of the sealing surfaces can be ensured; the graphite sealing ring is clamped on the butt joint circumferential side surface of the flange I and the flange II; the graphite sealing ring has high wear resistance and rebound resilience and has a better sealing effect under the conditions of high temperature and high pressure, and the sealing structure part of the whole flange is not easy to age and deform due to the influence of time and high temperature, so that the long-term connection stability is kept.

Description

Technical Field

[0001] This utility model relates to the field of casting and processing technology, and in particular to the flange for connecting flat conveyor pipes. Background Technology

[0002] In casting, the outlet of the aluminum molten metal holding crucible needs to be connected to a flat conveyor pipe, which is usually connected to the crucible via a butt flange. However, with the passage of time and the influence of high temperatures, the sealing area of ​​the existing butt flanges gradually ages and deforms, thus affecting their sealing performance.

[0003] Therefore, we propose using a horizontal conveyor pipe connection flange to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a flange for connecting flat conveyor pipes to solve the problems mentioned in the background art.

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

[0006] The flat conveyor pipe connecting flange includes flange one and flange two. Flange one has a connecting groove on one side, and flange two has a matching butt joint on one side. A copper gasket is provided in the connecting groove, and a graphite sealing ring is embedded on the outer circumferential side wall of the butt joint. Both flange one and flange two have several locking grooves on their outer edges.

[0007] In a further embodiment, the mating groove and the connector adopt a flared structure.

[0008] In a further embodiment, the flange has a through hole, and a welding head is provided on the side of the flange away from the mating groove. The outer end face of the welding head is provided with a welding groove, and a stepped surface is formed between the welding groove and the through hole.

[0009] In a further embodiment, the outer port edge of the welding groove is chamfered.

[0010] In a further embodiment, the flange two has a through hole two inside, and the flange two has a welding groove two on the side away from the butt joint, and the welding groove two and the through hole two form a stepped surface.

[0011] In a further embodiment, the outer port edge of the welding groove two is chamfered.

[0012] In a further embodiment, the locking groove extends through the outer edge of the flange, and the locking groove adopts a U-shaped structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention features copper gaskets clamped between the mating surfaces of flange one and flange two. The copper gaskets are highly flexible, filling uneven areas on the flange surface and ensuring a tight seal for excellent sealing performance. Meanwhile, graphite sealing rings are clamped between the mating circumferential sides of flange one and flange two. These graphite sealing rings possess high wear resistance and resilience, providing excellent sealing under high temperature and pressure conditions. They also lubricate the circumferential sides of the flange connection, making the mating operation smoother. The entire sealing structure of the flange is less susceptible to aging and deformation due to time and high temperatures, thus maintaining long-term connection stability. Attached Figure Description

[0015] Figure 1 This is a side view of the disassembled structure of this utility model;

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

[0017] Figure 3 This is a schematic diagram of the mating groove structure of flange one of this utility model;

[0018] Figure 4 This is a schematic diagram of the butt joint structure of flange two of this utility model;

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

[0020] In the diagram: 1. Flange 1; 11. Butt joint groove; 12. Welding head; 13. Through hole 1; 14. Welding groove 1; 2. Flange 2; 21. Butt joint; 22. Through hole 2; 23. Welding groove 2; 3. Copper gasket; 4. Graphite sealing ring; 5. Locking groove. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] 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.

[0024] Please see Figure 1-5 The flat conveyor pipe connecting flange includes flange 1 and flange 2. Flange 1 has a connecting groove 11 on one side, and flange 2 has a matching connector 21 on one side. The connector 21 is inserted into the connecting groove 11 to achieve connection. A copper gasket 3 is provided in the connecting groove 11. The end face of the connector 21 clamps the copper gasket 3 with the connecting groove 11 to improve the sealing effect. The thickness of the copper gasket 3 plus the length of the connector 21 protruding from the end face of flange 2 is equal to the depth of the connecting groove 11, so that the connector 21 can be fully inserted into the connecting groove 11. At the same time, a graphite sealing ring 4 is embedded on the outer circumferential side wall of the connector 21. The graphite sealing ring 4 is pressed between the inner circumferential side wall of the connecting groove 11 and the outer circumferential side wall of the connector 21 to improve the sealing performance. Both flange 1 and flange 2 have several locking grooves 5 on their outer edges. The locking grooves 5 at the same position on flange 1 and flange 2 are locked and fixed by bolts and nuts.

[0025] To further facilitate docking, the docking groove 11 and the connector 21 are designed with a flared structure, so that the narrower end of the connector 21 is closer to the larger end of the docking groove 11 first, which facilitates alignment and insertion. At the same time, since the docking surface is inclined, the sealing performance of the graphite sealing ring 4 is further improved when it is compressed.

[0026] To facilitate the connection between flange 1 and the flat conveyor pipe, a through hole 13 is provided inside flange 1. The diameter of the through hole 13 is smaller than the diameter of the mating groove 11. A welding head 12 is provided on the side of flange 1 away from the mating groove 11. The welding head 12 protrudes from the side end face of flange 1. A welding groove 14 is provided on the outer end face of the welding head 12. The diameter of the welding groove 14 is larger than the diameter of the through hole 13, so that a stepped surface is formed between the welding groove 14 and the through hole 13, which facilitates the insertion of the flat conveyor pipe head. The stepped surface limits the flat conveyor pipe head and facilitates welding.

[0027] To facilitate the connection between flange 2 and crucible, flange 2 has a through hole 22 inside, and a welding groove 23 is provided on the side of flange 2 away from the butt joint 21. The diameter of the through hole 22 is smaller than the diameter of the welding groove 23, so that a stepped surface is formed between the welding groove 23 and the through hole 22, which facilitates the insertion of the discharge pipe head of the crucible. The stepped surface limits the discharge pipe head of the crucible, which is convenient for welding.

[0028] To facilitate the insertion of the pipe head into the welding groove, the outer edge of the welding groove 14 and the outer edge of the welding groove 23 are chamfered, so that the groove edges are extended outward, making it easier for the welding rod to fit tightly against the joint for welding.

[0029] The locking groove 5 extends through the outer edge of the flange, and the locking groove 5 adopts a U-shaped structure, which makes it convenient to directly insert bolts from the outside when connecting flange 1 and flange 2, without having to pass the bolt through the connection hole of one flange first and then through the connection hole of the other flange, making the connection more convenient and faster.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Butt flanges for flat ducts, comprising a flange one (1) and a flange two (2), characterized in that: One side of the flange one (1) is provided with a butt joint groove (11), and one side of the flange two (2) is provided with a butt joint head (21) matched with the butt joint groove (11), the butt joint groove (11) is provided with a red copper gasket (3), the outer circumferential side wall of the butt joint head (21) is inlaid with a graphite sealing ring (4), and the outer edges of the flange one (1) and the flange two (2) are provided with a plurality of locking grooves (5).

2. The flat face pipe butt flange of claim 1, wherein: The butt joint groove (11) and the butt joint head (21) adopt a horn shape structure.

3. The flat face pipe butt flange of claim 1, wherein: The flange one (1) is penetrated by a through hole one (13), and one side of the flange one (1) away from the butt joint groove (11) is provided with a welding head (12), the outer end surface of the welding head (12) is provided with a welding groove one (14), and a stepped surface is formed between the welding groove one (14) and the through hole one (13).

4. The flat face pipe butt flange of claim 3, wherein: The outer port edge of the welding groove one (14) is chamfered.

5. The flat face pipe butt flange of claim 1, wherein: The flange two (2) is penetrated by a through hole two (22), and one side of the flange two (2) away from the butt joint head (21) is provided with a welding groove two (23), and a stepped surface is formed between the welding groove two (23) and the through hole two (22).

6. The flat face pipe butt flange of claim 5, wherein: The outer port edge of the welding groove two (23) is chamfered.

7. The flat face pipe butt flange of claim 1, wherein: The locking groove (5) penetrates the flange outer edge, and the locking groove (5) adopts a U-shaped structure.

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