Metal elbow with good sealing performance

Abstract

The utility model relates to the technical field of metal elbows, in particular to a metal elbow with good sealing performance, which comprises an elbow body and two pipe fittings matched with the elbow body, sealing rings are sleeved outside two first mounting blocks, extension blocks are annularly and integrally formed on the inner walls of the two sealing rings, two connecting blocks are sleeved on the surface of the elbow body, and the two connecting blocks are connected with the elbow body. Second internal threads are annularly arranged on the inner walls of the two connecting blocks, and second external threads are annularly arranged on the surfaces of the two pipe fittings. The sealing ring is sleeved on the first mounting block, the connecting block is in butt joint with the pipe fitting, the connecting block is in threaded connection with the second external thread through the second internal thread, the connecting block is connected with the pipe fitting, the inner wall of the connecting block is connected with the extension block on one side in a pressing mode, and the end of the pipe fitting is connected with the extension block on the other side in a pressing mode. And the connecting block is still used for protection, liquid cannot overflow along the sealing ring, and the service life of the metal elbow is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of metal elbow technology, and in particular to a metal elbow with good sealing performance. Background Technology

[0002] In piping systems, elbows are fittings used to change the direction of pipelines. Based on angle, the three most common types are 45°, 90°, and 180°. Additionally, depending on project requirements, other non-standard angle elbows such as 60° are also available. Elbows are made from materials including cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals, and plastics.

[0003] For example, the authorization notice number "CN219933310U" describes a type of metal elbow with good sealing performance. Although it has a sealing structure, during use, by removing the sealing ring, placing it on the outside of the connection port, and pressing the sealing ring to engage the retaining ring in the pre-drilled groove, the sealing ring will fit against the limiting ring. During connection, the sealing ring seals the connection port, thus ensuring the overall sealing performance of the elbow body and facilitating the replacement of the sealing ring. However, the sealing ring is prone to aging or damage, allowing liquid to leak out along the sealing ring and affecting the service life of the metal elbow. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a metal elbow with good sealing performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a metal elbow with good sealing performance, including an elbow body and two matching pipe fittings. The elbow body has first mounting blocks at both ends, and the two pipe fittings each have a second mounting block near the end of the elbow body. The surface of the elbow body near the pipe fittings has a first external thread circumferentially, and the inner walls of the two pipe fittings near the elbow body have a first internal thread circumferentially. The first internal thread is threadedly connected to the first external thread. A sealing ring is fitted around the outside of each of the two first mounting blocks, and an extended block is integrally formed on the inner wall of each of the two sealing rings. Two connecting blocks are fitted onto the surface of the elbow body, and the inner walls of both connecting blocks have a second internal thread circumferentially. The surfaces of both pipe fittings have a second external thread circumferentially, and the second external thread is threadedly connected to the second internal thread.

[0007] Preferably, the elbow body surface at the turning point is provided with a first reinforcing rib.

[0008] Preferably, the elbow body surface is provided with a plurality of second reinforcing ribs.

[0009] Preferably, a third reinforcing rib is provided on the outer side of the corner of the inner wall of the elbow body.

[0010] Preferably, the first mounting block has a positioning groove on both its front and rear surfaces, and the inner wall of the plurality of extension blocks near the positioning groove has a positioning protrusion on one side, with one end of the positioning protrusion extending into the positioning groove.

[0011] Preferably, the outer surface profile of the connecting block is a regular hexagon.

[0012] The present invention provides a metal elbow with good sealing performance, which has the following advantages: the sealing ring is fitted onto the first mounting block, the connecting block is connected to the pipe fitting, and the connecting block and the pipe fitting are connected by the second internal thread and the second external thread. The inner wall of the connecting block presses against one side of the outer extension block, and the end of the pipe fitting presses against the other side of the outer extension block. Even if the sealing ring ages or is damaged, the connecting block still provides protection, and liquid will not overflow along the sealing ring, thus extending the service life of the metal elbow. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0015] Figure 3 This is an enlarged view of position A of this utility model.

[0016] In the figure: elbow body 1, pipe fitting 2, first mounting block 3, second mounting block 4, first external thread 5, first internal thread 6, sealing ring 7, extension block 8, connecting block 9, second internal thread 10, second external thread 11, first reinforcing rib 12, second reinforcing rib 13, third reinforcing rib 14, positioning groove 15, positioning protrusion 16. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1-3A metal elbow with good sealing performance includes an elbow body 1 and two matching pipe fittings 2. The elbow body 1 has a first mounting block 3 at both ends. The two pipe fittings 2 have a second mounting block 4 at the end near the elbow body 1. The surface of the elbow body 1 near the pipe fitting 2 has a first external thread 5 in an annular shape. The inner wall of the two pipe fittings 2 near the elbow body 1 has a first internal thread 6 in an annular shape. The first internal thread 6 is threaded to the first external thread 5. The two first mounting blocks 3 are fitted with sealing rings 7. The inner wall of the two sealing rings 7 is integrally formed with an extension block 8 in an annular shape. The surface of the elbow body 1 is fitted with two connecting blocks 9. The inner wall of the two connecting blocks 9 has a second internal thread 10 in an annular shape. The surface of the two pipe fittings 2 has a second external thread 11 in an annular shape. The second external thread 11 is threaded to the second internal thread 10.

[0019] The elbow body 1 has a first reinforcing rib 12 at the bend. The first reinforcing rib 12 serves to reinforce the bend and prevent damage to the elbow during installation.

[0020] The elbow body 1 has multiple second reinforcing ribs 13 on its surface. The second reinforcing ribs 13 serve to reinforce the elbow and extend its service life.

[0021] A third reinforcing rib 14 is provided on the outer side of the corner of the inner wall of the elbow body 1. The third reinforcing rib 14 serves to reinforce the inner wall of the elbow and enhance its resistance to water flow impact.

[0022] The first mounting block 3 has circumferential positioning grooves 15 on both its front and rear surfaces. Multiple extension blocks 8 have circumferential positioning protrusions 16 on their inner walls near the positioning grooves 15, with one end of each protrusion extending into the positioning groove 15. The positioning protrusions 16 extending into the positioning groove 15 prevent the sealing ring 7 from shifting, thus avoiding misalignment of the sealing ring 7 during installation.

[0023] The outer surface profile of the connecting block 9 is a regular hexagon. The regular hexagonal shape makes it easy to tighten and loosen the connecting block 9 using a wrench.

[0024] Working principle: First, the sealing ring 7 is fitted onto the first mounting block 3. Then, the elbow body 1 and the pipe fitting 2 are connected and tightened by the first external thread 5 and the first internal thread 6. Then, the connecting block 9 is connected to the pipe fitting 2 by the second internal thread 10 and the second external thread 11. The connecting block 9 and the pipe fitting 2 are connected by pressing one side of the outer extension block 8 through the inner wall of the connecting block 9, and the end of the pipe fitting 2 is pressed onto the other side of the outer extension block 8. Even if the sealing ring 7 is aged or damaged, the connecting block 9 will still provide protection, and liquid will not overflow along the sealing ring 7, thus extending the service life of the metal elbow.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A metal elbow with good sealing performance, comprising an elbow body (1) and two matching pipe fittings (2), characterized in that, The elbow body (1) is provided with a first mounting block (3) at both ends. The two pipe fittings (2) are provided with a second mounting block (4) at one end near the elbow body (1). The elbow body (1) is provided with a first external thread (5) on the surface of one end near the pipe fitting (2). The inner wall of the two pipe fittings (2) is provided with a first internal thread (6) on the surface of one end near the elbow body (1). The first internal thread (6) is threadedly connected to the first external thread (5). The two first mounting blocks (3) are fitted with sealing rings (7). The inner wall of the two sealing rings (7) is integrally formed with an extension block (8). The elbow body (1) is fitted with two connecting blocks (9). The inner wall of the two connecting blocks (9) is provided with a second internal thread (10) on the surface of one end. The two pipe fittings (2) are provided with a second external thread (11) on the surface of one end. The second external thread (11) is threadedly connected to the second internal thread (10).

2. The metal elbow with good sealing performance according to claim 1, characterized in that, The elbow body (1) is provided with a first reinforcing rib (12) at the bend.

3. A metal elbow with good sealing performance according to claim 1, characterized in that, The elbow body (1) has multiple second reinforcing ribs (13) on its surface.

4. A metal elbow with good sealing performance according to claim 1, characterized in that, The elbow body (1) has a third reinforcing rib (14) on the outer side of the corner of the inner wall.

5. A metal elbow with good sealing performance according to claim 1, characterized in that, The first mounting block (3) has a positioning groove (15) on both the front and rear surfaces. The inner wall of the multiple extension blocks (8) near the positioning groove (15) is provided with a positioning protrusion (16) on one side. One end of the positioning protrusion (16) extends into the positioning groove (15).

6. A metal elbow with good sealing performance according to claim 1, characterized in that, The outer surface profile of the connecting block (9) is a regular hexagon.

Images