Metal tooth-shaped gasket with RPTFE

Abstract

The utility model discloses a metal tooth-shaped gasket with RPTFE (Resin Polytetrafluoroethylene). Relates to the technical field of metal gaskets, in particular to a metal tooth-shaped gasket with RPTFE. Comprising a metal sheet body and a flexible sheet, a plurality of tooth blocks are uniformly arranged on the peripheral wall of the metal sheet body, an insertion groove is formed in the joint of the tooth blocks and the metal sheet body, a flexible ring is arranged in the insertion groove, the flexible ring wraps part of the peripheral wall of the metal sheet body, the flexible ring and the flexible sheet are integrally arranged, and a cavity is formed in each tooth block. A fixing needle is slidably connected into the cavity, and a fixing hole allowing the fixing needle to be inserted therein is formed in the flexible ring. The tooth-shaped pad and the flexible material are fixed by a flexible agent, and the condition that the flexible material is difficult to tear off from the tooth-shaped pad if the flexible material is damaged or corroded during long-term use and the maintenance of the tooth-shaped pad is not facilitated is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of metal gasket, especially to a metal tooth-shaped gasket with RPTFE. BACKGROUND

[0002] Tooth-shaped gasket is an industrial product suitable for high temperature and high pressure parts. Generally, concentric grooves are machined on two surfaces of a metal stainless steel flat gasket by a precision lathe, and flexible graphite, PTFE, non-asbestos plate or other soft metals can be selected according to different media and pasted on the two surfaces of the gasket.

[0003] At present, the flexible agent is usually used to fix the tooth-shaped gasket and the flexible material. If the flexible material is damaged or corroded during long-term use, the flexible material is difficult to tear off the tooth-shaped gasket, which is not conducive to the maintenance of the tooth-shaped gasket. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a metal tooth-shaped gasket with RPTFE, which comprises a metal sheet body and a flexible sheet, the metal sheet body and the flexible sheet are annular, the metal sheet body and the flexible sheet are coaxially arranged, both sides of the metal sheet body are provided with concentric wave-shaped grooves, the flexible sheet covers the wave-shaped grooves, the flexible sheet is provided with an insertion block for being inserted into the wave-shaped groove, a plurality of tooth blocks are uniformly arranged on the outer peripheral wall of the metal sheet body, both sides of the tooth block are provided with an insertion slot, a flexible ring is arranged in the insertion slot, the flexible ring covers part of the outer peripheral wall of the metal sheet body, the flexible ring is integrally arranged with the flexible sheet, a cavity is arranged in the tooth block, a fixing needle is slidably connected in the cavity, and a fixing hole is arranged on the flexible ring for the insertion of the fixing needle.

[0005] Optionally, a anti-dropping block is arranged in the cavity, the tail of the fixing needle is fixed on the anti-dropping block, and the needle head of the fixing needle is directed to the center of the metal sheet body.

[0006] Optionally, a spring is arranged in the cavity, one end of the spring abuts against the anti-dropping block, and the other end of the spring abuts against the inner wall of the cavity.

[0007] Optionally, the fixing hole is arranged along the diameter direction of the flexible ring and penetrates through the outer peripheral wall of the flexible ring.

[0008] Optionally, one end of the tooth block is welded with the metal sheet body.

[0009] Optionally, the fixing needle is inserted into the insertion slot, a stretching rod is arranged in the cavity, one end of the stretching rod is fixed away from the end of the anti-dropping block, the other end of the stretching rod extends out of the cavity, and a pulling hole is arranged on the cavity for the stretching rod to pass through.

[0010] Optionally, one end of the plug block is integrally arranged with the flexible sheet, and the other end of the plug block is arc-shaped.

[0011] Compared with the prior art, the fixing needle is inserted into the fixing hole, the flexible ring is fixed on the metal sheet body, the flexible sheet is fixed on the surface of the wave-shaped groove due to the fixing of the flexible ring, thereby covering the wave-shaped groove, when the flexible sheet needs to be removed, the fixing needle is lifted respectively, the compression spring is extruded, the fixing needle is removed from the fixing hole, and the flexible ring and the flexible sheet are removed. The flexible agent is usually used to fix the tooth-shaped pad and the flexible material, if the flexible material is damaged or corroded during long-term use, the flexible material is difficult to tear off the tooth-shaped pad, and the tooth-shaped pad is not easy to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be described below. Obviously, the technical scheme described in the description combined with the drawings is only some embodiments of the present application, and for those skilled in the art, other embodiments and drawings can be obtained without creative labor on the basis of the embodiments shown in the drawings.

[0013] Figure 1 is a metal tooth-shaped gasket structure with RPTFE in the embodiment of the present application Figure 1 .

[0014] Figure 2 is a metal tooth-shaped gasket structure with RPTFE in the embodiment of the present application Figure 2 .

[0015] Figure 3 is a sectional view along A-A in Figure 2 .

[0016] Figure 4 is an enlarged schematic view of B in Figure 3 .

[0017] In the figure: 1, metal sheet body; 2, flexible sheet; 3, flexible ring; 4, wave-shaped groove; 5, plug block; 6, tooth block; 7, plug-in slot; 8, fixing needle; 9, fixing hole; 10, anti-drop block; 11, spring; 12, stretching rod. DETAILED DESCRIPTION

[0018] The technical solutions of the embodiments of the utility model will be clearly and completely described in combination with the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments described in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the utility model.

[0019] The embodiment of the utility model provides a kind of metal tooth-shaped gasket with RPTFE, as shown in Figures 1 to 4 Metal sheet body 1 and flexible sheet 2 are annular, and metal sheet body 1 and flexible sheet 2 are coaxially arranged. Both sides of metal sheet body 1 are provided with concentric corrugated grooves 4. Flexible sheet 2 covers corrugated grooves 4. Insert block 5 for being arranged in corrugated grooves 4 is arranged on flexible sheet 2. A plurality of tooth blocks 6 are uniformly arranged on the outer peripheral wall of metal sheet body 1. Insert groove 7 is arranged at the connection of tooth block 6 and metal sheet body 1. Flexible ring 3 is arranged in insert groove 7. Flexible ring 3 covers part of the outer peripheral wall of metal sheet body 1. Flexible ring 3 is integrally arranged with flexible sheet 2. Cavity is arranged in tooth block 6. Fixed needle 8 is slidably connected in cavity. Fixed hole 9 for inserting fixed needle 8 is arranged on flexible ring 3.

[0020] The position of fixed hole 9 can be set to tighten flexible sheet 2 on metal sheet body 1.

[0021] Anti-drop block 10 is arranged in cavity. The tail of fixed needle 8 is fixed on anti-drop block 10. The needle head direction of fixed needle 8 is towards the center direction of metal sheet body 1.

[0022] Spring 11 is arranged in cavity. One end of spring 11 abuts against anti-drop block 10. The other end of spring 11 abuts against the inner wall of cavity.

[0023] Fixed needle 8 is arranged in insert groove 7. Stretching rod 12 is arranged in cavity. One end of stretching rod 12 is fixed on the end of anti-drop block 10 away from fixed needle 8. The other end of stretching rod 12 extends out of cavity. The end of tooth block 6, through which stretching rod 12 extends, is welded to metal sheet body 1. Fixed needle 8 is arranged in insert groove 7.

[0024] One end of insert block 5 is integrally arranged with flexible sheet 2. The other end of insert block 5 is arc-shaped.

[0025] When the flexible material needs to be replaced, a tooth block 6 is selected, and then the stretching rod 12 on the tooth block 6 is pulled away from the metal sheet body 1, so that the anti-dropping block 10 compresses the compression spring 11, at this time, the fixing needle 8 is separated from the fixing hole 9, and then the flexible ring 3 at this position can be separated from the fixing needle 8, and the above operation is repeated by selecting different tooth blocks 6 until the flexible ring 3 is separated from all the fixing needles 8, and then the flexible ring 3 can be separated from the metal sheet body 1.

[0026] The flexible sheet 2 and the flexible ring 3 are pre-installed by inserting the plug block 5 into the wavy groove 4, then a tooth block 6 is selected, and then the stretching rod 12 on the tooth block 6 is pulled away from the metal sheet body 1, so that the anti-dropping block 10 compresses the compression spring 11, the flexible ring 3 is inserted into the plug slot 7, the fixing hole 9 is aligned with the needle head of the fixing needle 8, and then the stretching rod 12 is loosened, at this time, the compression spring 11 restores the elastic deformation, and the fixing needle 8 is inserted into the fixing hole 9. The above operation is repeated by selecting different tooth blocks 6 until all the fixing holes 9 on the flexible ring 3 are fixed with all the fixing needles 8, and the replacement of the flexible material is completed.

[0027] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view. The scope of the present application is defined by the appended claims, not the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A toothed metal gasket with RPTFE reinforcement, characterized in that: The device includes a metal sheet body (1) and a flexible sheet (2), both of which are annular and coaxially arranged. Concentric wavy grooves (4) are provided on both sides of the metal sheet body (1), and the flexible sheet (2) covers the wavy grooves (4). Each flexible sheet (2) has an insert (5) for passing through the wavy grooves (4). Multiple toothed blocks (6) are evenly arranged on the peripheral wall. Insertion grooves (7) are provided on both sides of each toothed block (6). A flexible ring (3) is provided in the insertion groove (7). The flexible ring (3) covers part of the outer peripheral wall of the metal sheet body (1). The flexible ring (3) is integrally formed with the flexible sheet (2). A cavity is provided in the toothed block (6). A fixing pin (8) is slidably connected in the cavity. A fixing hole (9) is provided on the flexible ring (3) for the fixing pin (8) to be inserted.

2. The toothed metal gasket with RPTFE reinforcement according to claim 1, characterized in that: An anti-detachment block (10) is provided inside the cavity, and the tail of the fixing pin (8) is fixed on the anti-detachment block (10). The needle tip of the fixing pin (8) is directed toward the center of the metal sheet body (1).

3. The toothed metal gasket with RPTFE reinforcement according to claim 2, characterized in that: A spring (11) is provided inside the cavity. One end of the spring (11) abuts against the anti-detachment block (10), and the other end of the spring (11) abuts against the inner wall of the cavity.

4. The toothed metal gasket with RPTFE according to claim 2, characterized in that: The fixing hole (9) is arranged along the diameter direction of the flexible ring (3) and penetrates the outer peripheral wall of the flexible ring (3).

5. The toothed metal gasket with RPTFE reinforcement according to claim 1, characterized in that: One end of the toothed block (6) is welded to the metal sheet body (1).

6. The toothed metal gasket with RPTFE according to claim 3, characterized in that: The fixing pin (8) is inserted into the insertion slot (7). A tension rod (12) is provided in the cavity. One end of the tension rod (12) is fixed to the end of the anti-detachment block (10) away from the fixing pin (8). The other end of the tension rod (12) extends out of the cavity. A pull hole is provided on the cavity for the tension rod (12) to pass through.

7. The toothed metal gasket with RPTFE according to claim 1, characterized in that: One end of the insert (5) is integrally formed with the flexible sheet (2), and the other end of the insert (5) is arc-shaped.

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