Fastening type connecting flange

Abstract

The utility model belongs to the technical field of flanges, and particularly relates to a fastening type connecting flange which comprises a flange, a bolt and a sealing gasket. The outer ring frames are located on the outer sides of the adjacent flanges and used for wrapping the adjacent flanges to form sealing to prevent external pollutants from entering the adjacent flanges, and protruding fixing protrusions are arranged on the outer sides of the flanges and used for positioning the outer ring frames to prevent deflection; the outer side of the outer ring frame is provided with a side ring frame in a threaded connection mode, and extension pads at the two ends of the outer ring frame are extruded by extension blocks at the ends of the side ring frame to be bent inwards so as to abut against the two ends of a bolt to be fixed. The flange has stable connection performance, long-time firm connection is kept, pollutants in the external environment are prevented from entering the flange, the stability of the internal structure of the flange is ensured, and the service life of the flange is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of flanges, and particularly relates to a fastening type connecting flange. Background Technique

[0002] A connecting flange is a detachable joint used to connect two pipelines, pipe fittings or equipment. It consists of a flange, a gasket and bolts connected to each other, and can realize the connection between a static pipeline and a rotating or reciprocating equipment. It is widely used in the connection between pipelines and equipment, such as a reducer flange, etc.

[0003] At present, existing flanges are often directly installed at the connection of pipelines and placed naked outside. Affected by the working environment, the internal structure is prone to corrosion, resulting in loose or even ineffective flange connections, which is not conducive to the stable use of flanges.

[0004] To solve the above problems, a fastening type connecting flange is proposed in this application. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fastening type connecting flange, which solves the problems raised in the above background technique.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a fastening type connecting flange, including: a flange, bolts and a sealing gasket; an outer ring frame located outside adjacent flanges, used to wrap adjacent flanges to form a seal to prevent external pollutants from entering the interior of adjacent flanges. A protruding fixing protrusion is provided on the outside of the flange to position the outer ring frame to prevent deflection; a side ring frame is installed on the outside of the outer ring frame through threaded connection. After the extension pads at both ends of the outer ring frame are squeezed by the extension blocks at the ends of the side ring frame, they bend inward, and then abut against both ends of the bolts to form a fixation.

[0008] Further, a rubber pad is provided at the other end of the side ring frame. After adjacent side ring frames are tightened, adjacent rubber pads are mutually squeezed, and the threaded connection structure between the side ring frame and the outer ring frame is tightened by using the reverse acting force to ensure the tight connection of adjacent flanges.

[0009] Further, an inclined slope is provided at the connection between the inner side of the extension block and the side ring frame, which is used to drive the extension pad to bend inward when the side ring frame rotates and retracts.

[0010] Further, a positioning groove is opened on the inner side of the outer ring frame, which is used to slidably install the fixing protrusion so that the outer ring frame is installed at a fixed angle.

[0011] Further, both ends of the bolt are wrapped by the blocking pads on the inner side of the extension pad to increase the limiting force and prevent the connection from loosening.

[0012] Further, when adjacent flanges are connected, the outer ring frame is pre-installed on the outer side of the pipeline, and the installation position of the adjacent flanges can be judged whether it reaches the predetermined accuracy according to the position of the extension pad relative to the flange.

[0013] Further, the extension pad is also used to form a clamping force on the adjacent flanges to ensure the fastening performance when the adjacent flanges are used.

[0014] The utility model has the following beneficial effects:

[0015] By adding the outer ring frame 2, the utility model can cooperate with the side ring frame 3 and the extension block 4 to make the extension pad 5 bend against the end of the bolt 6. At this time, the outer ring frame 2 wraps the flange 1 to form a seal, which can effectively prevent external pollutants such as impurities or sewage from entering the gap, ensuring that the internal structure is not affected by the external environment. Compared with the existing flange, the service life can be greatly improved while ensuring the use stability.

[0016] Through the cooperation of the blocking pad 10 and the extension pad 5, the utility model can tightly hold both ends of the bolt 6 by the blocking pad 10 after the extension pad 5 bends, forming an extrusion type wrapping. The edge parts at both ends of the bolt 6 are blocked and limited. In this way, the use stability of the bolt 6 can be ensured, and it is not affected by external forces such as external vibration, ensuring the fastening connection performance and improving the operation stability of the equipment.

[0017] Of course, it is not necessary for any product implementing the utility model to achieve all the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall appearance structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the internal connection part structure of the adjacent flanges of the present utility model;

[0021] Figure 3 It is a schematic diagram of the disassembled part structure of the outer ring frame and the flange of the present utility model;

[0022] Figure 4Schematic diagram of the connection part between the outer ring frame and the flange of the present utility model;

[0023] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0024] In the figure: 1. Flange; 2. Outer ring frame; 3. Side ring frame; 4. Extension block; 5. Extension pad; 6. Bolt; 7. Rubber pad; 8. Sealing gasket; 9. Fixed protrusion; 10. Blocking pad; 11. Inclined slope; 12. Positioning groove. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0027] Please refer to Figures 1-4 As shown, the present utility model is a fastening type connecting flange, including a flange 1, a bolt 6, and a sealing gasket 8;

[0028] The outer ring frame 2 is located outside adjacent flanges 1 and is used to wrap the adjacent flanges 1 to form a seal to prevent external contaminants from entering the interior of the adjacent flanges 1. A protruding fixed protrusion 9 is provided on the outside of the flange 1 to position the outer ring frame 2 to prevent deflection;

[0029] A side ring frame 3 is installed on the outside of the outer ring frame 2 through a threaded connection. The extension pads 5 at both ends of the outer ring frame 2 are bent inward after being squeezed by the extension blocks 4 at the ends of the side ring frame 3, and then abut against both ends of the bolt 6 to form a fixation;

[0030] This embodiment provides a flange structure with firm connection. The cooperation of the extension pad 5 and the extension block 4 is used to clamp the adjacent flanges, ensuring firm connection. At the same time, through the outer ring frame 2, a coating is formed to prevent contaminants in the external environment from entering the interior, so as to ensure the stable connection of the adjacent flanges 1.

[0031] Wherein, the other end of the side ring frame 3 is provided with a rubber pad 7. After the adjacent side ring frames 3 are tightened, the adjacent rubber pads 7 are mutually extruded, and the threaded connection structure between the side ring frame 3 and the outer ring frame 2 is tightened by using the reverse acting force, so that the adjacent extension pads 5 maintain a stable clamping effect to ensure the tight connection of the adjacent flanges 1.

[0032] Wherein, an inclined slope 11 is provided at the connection between the inner side of the extension block 4 and the side ring frame 3, which is used to drive the extension pad 5 to bend inwards when the side ring frame 3 rotates and retracts. Before the adjacent flanges 1 are connected, the extension block 4 is located outside the extension pad 5 to reserve an installation operation space for the flange 1.

[0033] Wherein, a positioning groove 12 is formed on the inner side of the outer ring frame 2 for slidably installing the fixing protrusion 9 so that the outer ring frame 2 is installed at a fixed angle to ensure the structural stability during long-term use.

[0034] Wherein, the two end edges of the bolt 6 are covered by the blocking pads 10 on the inner side of the extension pad 5. By using the extrusion force after wrapping, the angle of the bolt 6 is fixed to increase the limiting force to prevent its connection from loosening.

[0035] Wherein, when the adjacent flanges 1 are connected, the outer ring frame 2 is pre-installed on the outer side of the pipeline, and the installation position of the adjacent flanges 1 is judged whether it reaches the predetermined accuracy according to the position of the extension pad 5 relative to the flange 1.

[0036] Wherein, the extension pad 5 is also used to form a clamping force on the adjacent flanges 1 to ensure the fastening performance of the adjacent flanges 1 during use.

[0037] It can be understood that the flange 1 of the present utility model has a stable connection performance, maintains a long-term tight connection, and at the same time prevents pollutants in the external environment from entering the interior, ensuring the structural stability inside the flange 1 and improving its service life.

[0038] A specific application of the operation process of this embodiment is as follows: When installing the flange, first sleeved the outer ring frame 2 on the outer side of the pipeline. Then, when the adjacent flanges 1 are butted, the fixing protrusion 9 slides into the inside of the positioning groove 12 to form a positioning. Subsequently, rotate the side ring frame 3. By using the threaded structure that is spirally connected between its inner side and the outer side of the outer ring frame 2, the extension pad 5 can be extruded through the inclined slope 11 to bend inwards. Then, the two end edges of the bolt 6 are aligned and covered by the blocking pads 10. While increasing the limiting force to prevent loosening, the outer ring frame 2 can also form a wrapped seal on the adjacent flanges 1 to prevent pollutants in the external environment from entering the interior and causing negative effects such as corrosion. Through this, the tightness of the flange 1 during use can be ensured to guarantee the stable operation of the equipment used.

[0039] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A fastening type connecting flange, characterized in that: include: Flange (1), bolts (6) and sealing gasket (8); An outer ring frame (2) is located on the outside of the adjacent flange (1) and is used to cover the adjacent flange (1) to form a seal to prevent external pollutants from entering the adjacent flange (1). The outer side of the flange (1) is provided with a protruding fixing protrusion (9) to position the outer ring frame (2) to prevent deflection. The outer side of the outer ring frame (2) is installed with a side ring frame (3) through a threaded connection, and the extension pads (5) at both ends of the outer ring frame (2) are squeezed by the extension blocks (4) at the ends of the side ring frame (3) and then bent inwards, thereby pressing against the two ends of the bolts (6) to form a fixation.

2. A fastening type connecting flange according to claim 1, characterized in that: The other end of the side ring frame (3) is provided with a rubber pad (7). When adjacent side ring frames (3) are tightened, the adjacent rubber pads (7) are squeezed against each other, and the threaded connection structure between the side ring frame (3) and the outer ring frame (2) is tightened by the reverse force, so as to ensure that the connection between adjacent flanges (1) is tightened.

3. The fastening type connecting flange according to claim 1, characterized in that: An inclined slope (11) is provided at the connection between the inner side of the extension block (4) and the side ring frame (3), which is used to drive the extension pad (5) to bend inward when the side ring frame (3) is rotated and recovered.

4. The fastening type connecting flange according to claim 1, characterized in that: A positioning groove (12) is provided on the inner side of the outer ring frame (2) for slidingly installing the fixing protrusion (9) so that the outer ring frame (2) is installed at a fixed angle.

5. The fastening type connecting flange according to claim 1, characterized in that: The extension pad (5) covers the edge positions of both ends of the bolt (6) through the inner blocking pad (10), so as to increase the limiting force and prevent the connection from loosening.

6. The fastening type connecting flange according to claim 1, characterized in that: The outer ring frame (2) is pre-installed on the outside of the pipeline when adjacent flanges (1) are connected, and the position of the extension pad (5) relative to the flange (1) is used to determine whether the installation position of the adjacent flange (1) reaches a predetermined accuracy.

7. The fastening type connecting flange according to claim 1, characterized in that: The extension pad (5) is also used to form a clamping force on the adjacent flange (1), thereby ensuring the fastening performance of the adjacent flange (1) when in use.

Images