Metal gasket for protruding surface flange

Abstract

The utility model discloses a metal gasket for a protruding surface flange, which relates to the technical field of flange accessories and comprises a gasket, a front contact piece and a rear contact piece, the front contact piece and the rear contact piece are respectively clamped on two sides of the gasket, positioning holes are arranged on two sides of the gasket, positioning blocks are welded on two sides of the rear contact piece, and the positioning blocks are clamped in the positioning holes. Connecting blocks are installed on the two sides of the front contact piece, connecting grooves are formed in the positioning blocks, the connecting blocks are clamped in the connecting grooves, positioning assemblies used for fixing the positioning blocks and the connecting blocks are arranged in the two sides of the gasket, a containing cavity is formed in the inner wall of the positioning hole, a communicating hole is formed between the containing cavity and the positioning hole, and control grooves are formed in the two sides of the gasket. A through groove is formed between the containing cavity and the control groove. The front contact piece and the rear contact piece can make contact with a pipeline and achieve the sealing effect, when loss occurs, one or two of the front contact piece and the rear contact piece can be replaced, the gasket can be repeatedly used, and therefore resources can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of flange accessories, in particular to a metal gasket for a raised face flange. Background Art

[0002] The sealing surface of the raised face flange is flat, and the contact area with the gasket is large. After pre-tightening, the gasket is easy to stretch or move to both sides, and the sealing performance is poor. It is only suitable for low-pressure occasions. Therefore, the gasket used in the raised face flange needs to be replaced frequently.

[0003] Publication number CN206572104U discloses a flange gasket, the gasket body includes an inner layer and an outer layer, a soft magnetic sheet is evenly arranged in an annular shape on the inner layer close to the outer layer, the soft magnetic sheet is arranged in a cylindrical shape, the inner layer is provided with an installation groove for installing the soft magnetic sheet, a magnetic protrusion is integrally arranged on the side of the soft magnetic sheet close to the inner layer, the inner layer is provided with a groove for installing the magnetic protrusion, and the cross-sectional area of ​​the magnetic protrusion is arranged in a five-pointed star shape. The flange gasket of the utility model can be adsorbed on the connection when the flange gasket is used, and is not easy to fall off. It has a preliminary fixing effect when connected, reduces the installation time, and improves the connection speed.

[0004] The gasket structure provided by the above technical solution is a common gasket structure, the main structure of which is composed of a thin layer of metal. After a period of use, the contact surfaces on both sides of the gasket are damaged and need to be replaced, but the material in the middle position is generally not damaged, which will cause material waste. Utility Model Content

[0005] The utility model aims to provide a metal gasket for a raised face flange, which solves the problem that the contact surfaces on both sides of the gasket need to be replaced after being damaged after being used for a period of time, but the material in the middle position is generally not damaged, thus causing material waste.

[0006] The utility model solves the above technical problems through the following technical solutions. The utility model includes a gasket, a front contact piece and a rear contact piece. The front contact piece and the rear contact piece are respectively clamped on both sides of the gasket, and positioning holes are opened on both sides of the gasket. Positioning blocks are welded on both sides of the rear contact piece, and the positioning blocks are clamped in the positioning holes. Connecting blocks are installed on both sides of the front contact piece, and connecting grooves are opened on the positioning blocks, and the connecting blocks are clamped in the connecting grooves.

[0007] Preferably, positioning components for fixing the positioning block and the connecting block are provided inside both sides of the gasket.

[0008] Preferably, an accommodating cavity is provided inside the inner wall of the positioning hole, a communicating hole is provided between the accommodating cavity and the positioning hole, control grooves are provided on both sides of the gasket, and a through groove is provided between the accommodating cavity and the control groove.

[0009] Preferably, the positioning assembly includes a positioning card block, a control plate, a control spring, a pulling block and a limiting plate. The control plate is installed in the accommodating cavity through the control spring. A releasing hole is provided on one side of the positioning block. A key slot is provided on one side of the connecting block. The positioning card block is installed on one side of the control plate and one end passes through the connecting hole and the releasing hole and is locked in the key slot. The limiting plate is arranged in the control slot. The pulling block is installed in the limiting plate and the control plate and is locked in the through slot.

[0010] Preferably, a pulling ring is installed on the limiting plate.

[0011] Preferably, the depth of the accommodating cavity is greater than the depth of the keyway.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model can contact with the pipeline and achieve a sealing effect through the front contact sheet and the rear contact sheet. When wear occurs, one or both of them can be replaced, and the gasket can be reused, thus saving resources.

[0014] 2. Secondly, the front contact sheet and the rear contact sheet are positioned by the positioning assembly, thereby ensuring good stability during use and facilitating assembly and disassembly of the front contact sheet and the rear contact sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural view of the utility model;

[0016] Figure 2 It is an exploded view of the utility model;

[0017] Figure 3 This is a structural view of the rear contact sheet of the utility model;

[0018] Figure 4 This is a structural view of the front contact sheet of the utility model;

[0019] Figure 5 It is a cross-sectional structural view of the utility model;

[0020] Figure 6 For the utility model Figure 5 Partial structure view.

[0021] The numbers in the figure represent:

[0022] 1. Gasket; 2. Front contact piece; 3. Rear contact piece; 4. Positioning hole; 5. Positioning block; 6. Connecting block; 7. Connecting groove; 8. Positioning assembly; 801. Positioning block; 802. Control piece; 803. Control spring; 804. Pulling block; 805. Limiting piece; 9. Accommodating cavity; 10. Connecting hole; 11. Control groove; 12. Through groove; 13. Card hole; 14. Key groove; 15. Pulling ring. DETAILED DESCRIPTION

[0023] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0024] This embodiment provides a technical solution: a metal gasket for a raised face flange, such as Figure 1-Figure 6 As shown, it includes a gasket 1, a front contact piece 2 and a rear contact piece 3. The front contact piece 2 and the rear contact piece 3 are respectively clamped on both sides of the gasket 1. Positioning holes 4 are opened on both sides of the gasket 1. Positioning blocks 5 are welded on both sides of the rear contact piece 3. The positioning blocks 5 are clamped in the positioning holes 4. Connecting blocks 6 are installed on both sides of the front contact piece 2. Connecting grooves 7 are opened on the positioning blocks 5. The connecting blocks 6 are clamped in the connecting grooves 7. The front contact piece 2 and the rear contact piece 3 can be conveniently installed on the gasket 1 through the positioning blocks 5 and the connecting blocks 6 on the front contact piece 2 and the rear contact piece 3. The front contact piece 2 and the rear contact piece 3 can contact with the pipeline and achieve a sealing effect. When loss occurs, one or two of them can be replaced. The gasket 1 can be reused, so it can save resources.

[0025] In the specific implementation, such as Figure 3-Figure 6 As shown, positioning components 8 for fixing the positioning block 5 and the connecting block 6 are arranged inside both sides of the gasket 1. The front contact piece 2 and the rear contact piece 3 are positioned by the positioning components 8, thereby ensuring good stability during use and facilitating the assembly and disassembly of the front contact piece 2 and the rear contact piece 3.

[0026] Further, an accommodating cavity 9 is provided inside the inner wall of the positioning hole 4, a communicating hole 10 is provided between the accommodating cavity 9 and the positioning hole 4, control grooves 11 are provided on both sides of the gasket 1, a through groove 12 is provided between the accommodating cavity 9 and the control groove 11, and the positioning assembly 8 includes a positioning card block 801, a control sheet 802, a control spring 803, a pulling block 804 and a limiting sheet 805, the control sheet 802 is installed in the accommodating cavity 9 through the control spring 803, and the positioning block 5 is A releasing hole 13 is provided on the side, a key slot 14 is provided on one side of the connecting block 6, a positioning block 801 is installed on one side of the control plate 802 and one end passes through the connecting hole 10 and the releasing hole 13 and is locked in the key slot 14, the positioning block 801 is locked in the key slot 14 to fix the front contact plate 2 and the rear contact plate 3, the limiting plate 805 is set in the control slot 11, and the pulling block 804 is installed in the limiting plate 805 and the control plate 802 and is locked in the through slot 12.

[0027] Furthermore, a pulling ring 15 is installed on the limiting piece 805, and the positioning component 8 can be conveniently controlled by the pulling ring 15.

[0028] Furthermore, the depth of the accommodating cavity 9 is greater than the depth of the key slot 14 , thereby being able to provide sufficient space for the positioning block 801 to move.

[0029] The disassembly operation of the front contact piece 2 and the rear contact piece 3 is as follows: pull the pulling rings 15 on both sides outward, so that the pulling block 804 can drive the control piece 802 to squeeze the control spring 803 and move along the accommodating cavity 9, and at the same time, the positioning block 801 can be moved out of the key slot 14 and the card hole 13 and finally moved into the accommodating cavity 9. At this time, the positioning block 5 and the connecting block 6 are no longer fixed, so the front contact piece 2 and the rear contact piece 3 can be removed from both sides of the gasket 1 respectively.

[0030] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but they will all fall within the scope of protection of the present invention.

Claims

1. A metal gasket for a raised face flange, comprising a gasket (1), a front contact sheet (2) and a rear contact sheet (3), characterized in that: The front contact piece (2) and the rear contact piece (3) are respectively clamped on both sides of the gasket (1); positioning holes (4) are provided on both sides of the gasket (1); positioning blocks (5) are welded on both sides of the rear contact piece (3); the positioning blocks (5) are clamped in the positioning holes (4); connecting blocks (6) are installed on both sides of the front contact piece (2); connecting grooves (7) are provided on the positioning blocks (5); and the connecting blocks (6) are clamped in the connecting grooves (7).

2. The metal gasket for a raised face flange according to claim 1, characterized in that: Positioning components (8) for fixing the positioning block (5) and the connecting block (6) are arranged inside both sides of the gasket (1).

3. The metal gasket for a raised face flange according to claim 2, characterized in that: An accommodating cavity (9) is provided inside the inner wall of the positioning hole (4), a communicating hole (10) is provided between the accommodating cavity (9) and the positioning hole (4), control grooves (11) are provided on both sides of the gasket (1), and a through groove (12) is provided between the accommodating cavity (9) and the control groove (11).

4. The metal gasket for a raised face flange according to claim 3, characterized in that: The positioning assembly (8) comprises a positioning block (801), a control plate (802), a control spring (803), a pulling block (804) and a limiting plate (805); the control plate (802) is installed in the accommodating cavity (9) through the control spring (803); a locking hole (13) is provided on one side of the positioning block (5); a key slot (14) is provided on one side of the connecting block (6); the positioning block (801) is installed on one side of the control plate (802) and one end thereof passes through the connecting hole (10) and the locking hole (13) and is locked in the key slot (14); the limiting plate (805) is arranged in the control slot (11); and the pulling block (804) is installed in the limiting plate (805) and the control plate (802) and is locked in the through slot (12).

5. The metal gasket for a raised face flange according to claim 4, characterized in that: A pulling ring (15) is installed on the limiting piece (805).

6. The metal gasket for a raised face flange according to claim 4, characterized in that: The depth of the accommodating cavity (9) is greater than the depth of the key groove (14).

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