Connecting flange with sealing structure

Abstract

According to the connecting flange with the sealing structure, a plurality of positioning grooves are formed in the peripheral side of a second flange, a plurality of positioning blocks matched with the positioning grooves are arranged on the peripheral side of a first flange, a first annular groove is formed in the inner side of the second flange, and a second annular groove is formed in the bottom of the first annular groove; a sealing ring is fixedly arranged in the second annular groove, a positioning structure can be provided between the first flange and the second flange through cooperation of the positioning block and the positioning groove, the first flange and the second flange can be conveniently positioned, and the second flange cannot extrude the sealing ring in a staggered mode; and the second annular groove can be located in the sealing ring after extrusion, at the moment, the second annular groove is in an extruded state, then the sealing performance of the connecting position of the first flange and the second flange can be guaranteed, and functionality is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting flanges, in particular to a connecting flange with a sealing structure. Background Art

[0002] Flange, also known as flange flange or flange, is a part that connects shafts to each other and is used for connection between pipe ends. It is also used as flange on equipment inlet and outlet for connection between two devices.

[0003] Modern flanges are connecting devices. When used, general flanges have a relatively simple function, which is basically to complete the connection, but there is no way to ensure the sealing of the connection, and the functionality is low. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a connecting flange with a sealing structure.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solution: a connecting flange with a sealing structure, comprising a first flange and a second flange, wherein a plurality of positioning grooves are provided on the circumference of the second flange, and a plurality of positioning blocks matching the positioning grooves are provided on the circumference of the first flange;

[0008] A first annular groove is provided on the inner side of the second flange, a second annular groove is provided at the bottom of the first annular groove, and a sealing ring is fixedly provided inside the second annular groove.

[0009] In order to make the positioning block and the positioning groove dock more firmly, the improvement of the utility model is that a clamping groove is provided at the bottom of the positioning groove, a cavity is provided inside the positioning block, a spring is provided inside the cavity, and a clamping block matching the clamping groove is provided at the lower end of the spring.

[0010] Furthermore, the improvement of the utility model is that the clamping block is arc-shaped.

[0011] In order to facilitate the assembly of the sealing ring, the improvement of the utility model is that the sealing ring is bonded to the inside of the second annular groove.

[0012] Furthermore, the present invention is improved in that the sealing ring is a rubber sealing ring.

[0013] Furthermore, the utility model has the following improvements: a protective sheet is provided on the inner side of the second flange, and the protective sheet can protect the sealing ring.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a connecting flange with a sealing structure, which has the following beneficial effects:

[0016] The connecting flange with a sealing structure can provide a positioning structure between the first flange and the second flange through the cooperation of the positioning block and the positioning groove, so that the first flange and the second flange can be easily positioned, and the second flange will not squeeze the sealing ring out of position, and the second annular groove can be located inside the sealing ring after squeezing. At this time, the second annular groove is in an squeezed state, thereby ensuring the sealing of the connection between the first flange and the second flange, and having stronger functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;

[0018] Figure 2 This is a schematic diagram of the third perspective structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the card block in the utility model;

[0020] Figure 4 It is a cross-sectional view of the first annular groove and the second annular groove in the utility model;

[0021] In the figure: 1, first flange; 2, second flange; 3, positioning groove; 4, positioning block; 5, clamping block; 6, clamping groove; 7, first annular groove; 8, second annular groove; 9, sealing ring; 10, protective sheet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a connecting flange with a sealing structure, comprising a first flange 1 and a second flange 2, wherein a plurality of positioning grooves 3 are arranged on the circumference of the second flange 2, and a plurality of positioning blocks 4 cooperating with the positioning grooves 3 are arranged on the circumference of the first flange 1;

[0024] A first annular groove 7 is provided on the inner side of the second flange 2, a second annular groove 8 is provided at the bottom of the first annular groove 7, and a sealing ring 9 is fixedly provided inside the second annular groove 8;

[0025] In this embodiment, through the cooperation of the positioning block 4 and the positioning groove 3, a positioning structure can be provided between the first flange 1 and the second flange 2, which can facilitate the positioning of the first flange 1 and the second flange 2, so that the second flange 2 will not misalign and squeeze the sealing ring 9, and the second annular groove 8 can be located inside the sealing ring 9 after extrusion. At this time, the second annular groove 8 is in an extruded state, thereby ensuring the sealing of the connection between the first flange 1 and the second flange 2, and the functionality is stronger.

[0026] In this embodiment, a slot 6 is provided at the bottom of the positioning groove 3, a cavity is provided inside the positioning block 4, a spring is provided inside the cavity, and a block 5 is provided at the lower end of the spring for cooperating with the slot 6. When the positioning block 4 is matched with the positioning groove 3, the spring can provide an elastic force to the block 5, so that the block 5 can enter the inside of the slot 6. Through the cooperation between the block 5 and the slot 6, the positioning block 4 can be more firmly fixed in the positioning groove 3, and then the first flange 1 and the second flange 2 can be more firmly connected.

[0027] Furthermore, the clamping block 5 may be arc-shaped.

[0028] In this embodiment, the sealing ring 9 is bonded inside the second annular groove 8 in a bonding manner that facilitates assembly of the sealing ring 9 .

[0029] In this embodiment, the sealing ring 9 can be a rubber sealing ring 9 .

[0030] In this embodiment, a protective sheet 10 is provided on the inner side of the second flange 2 , and the protective sheet 10 can protect the sealing ring 9 . When the sealing ring 9 needs to be used, the protective sheet 10 can be torn off from the second flange 2 .

[0031] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A connecting flange with a sealing structure, comprising a first flange (1) and a second flange (2), characterized in that: A plurality of positioning grooves (3) are provided on the circumferential side of the second flange (2), and a plurality of positioning blocks (4) cooperating with the positioning grooves (3) are provided on the circumferential side of the first flange (1); A first annular groove (7) is provided on the inner side of the second flange (2), a second annular groove (8) is provided at the bottom of the first annular groove (7), and a sealing ring (9) is fixedly arranged inside the second annular groove (8).

2. The connecting flange with a sealing structure according to claim 1, characterized in that: A clamping groove (6) is provided at the bottom of the positioning groove (3), a cavity is provided inside the positioning block (4), a spring is provided inside the cavity, and a clamping block (5) matching the clamping groove (6) is provided at the lower end of the spring.

3. The connecting flange with a sealing structure according to claim 2, characterized in that: The clamping block (5) is arc-shaped.

4. The connecting flange with a sealing structure according to claim 3, characterized in that: The sealing ring (9) is bonded to the inside of the second annular groove (8).

5. The connecting flange with a sealing structure according to claim 4, characterized in that: The sealing ring (9) is a rubber sealing ring.

6. The connecting flange with a sealing structure according to claim 5, characterized in that: A protective sheet (10) is provided on the inner side of the second flange (2), and the protective sheet (10) can protect the sealing ring (9).

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