High-pressure rigid movable joint

Abstract

The high-pressure rigid movable connector comprises a first bent pipe and a second bent pipe, one end of the second bent pipe is fixedly connected with a connecting pipe, one end of the first bent pipe penetrates through and extends into the connecting pipe, grooves are formed in the corresponding positions of the inner wall of the connecting pipe and the side wall of the first bent pipe, and the first bent pipe is fixedly connected with the second bent pipe. And a baffle ring is solidified and formed in the groove to limit the end part of the first bent pipe from being separated from the connecting pipe. According to the invention, the baffle rings are formed at the first bent pipe and the connecting pipe, so that the connecting complexity is reduced, and the production is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of movable joints, in particular to a high-pressure rigid movable joint. Background Art

[0002] There are many different types of pipe connections, including flexible joints. Depending on the application scenario, pipe thickness and production methods vary. For flexible joints used in high-pressure applications, the pipe is cast or die-cast, then end-processed to connect two elbows.

[0003] In order to ensure the connection strength of the elbow, multiple tapered circular clamps are usually provided (refer to patent: CN201811362775.8) to buckle the two pipes together. However, the use of multiple tapered circular clamps requires processing multiple stepped surfaces on the end of the elbow, and the sizes of the tapered circular clamps are also different, which greatly increases the difficulty of production, the wall thickness of the elbow is also larger, and the structure of the connection is complicated. Summary of the Invention

[0004] To address the aforementioned issues, the present invention discloses a high-pressure rigid movable joint comprising a first curved pipe and a second curved pipe. One end of the second curved pipe is fixedly connected to a connecting pipe, and one end of the first curved pipe extends into the interior of the connecting pipe. In other words, the connecting pipe forms part of the rotating connection structure between the first and second curved pipes.

[0005] The inner wall of the connecting pipe and the side wall of the first elbow are provided with grooves at corresponding positions, and a retaining ring is solidified and formed in the groove to prevent the end of the first elbow from separating from the connecting pipe. In other words, the retaining ring is formed in the groove by casting or injection molding, thereby achieving the connection between the first elbow and the second elbow.

[0006] Preferably, a release layer is provided on the inner wall of the groove provided on the side wall of the first bend. The release layer is provided to ensure that the first bend and the second bend can rotate, so that the retaining ring will not adhere to the first bend after molding. Furthermore, different release materials are selected according to the retaining ring sample. When the retaining ring is molded by injection molding, a release agent can be sprayed in the groove. If the retaining ring is molded by casting, gypsum is used as the sample of the release layer. That is, the gypsum is crushed and then stirred with water to form a gypsum slurry. The gypsum slurry is sprayed in the groove and dried before casting.

[0007] Preferably, a casting hole is formed in the side wall of the connecting pipe, and the casting hole extends to the groove inside the connecting pipe. Material is injected through the casting hole. It should be noted that pre-tightening is required between the first bend pipe and the second bend pipe when injecting material to ensure the sealing of the connection.

[0008] Preferably, an O-ring is sleeved on the side wall of the first curved pipe, and a sealing ring is provided at one end of the first curved pipe. The O-ring and the sealing ring are provided to ensure the sealing between the first curved pipe and the connecting pipe.

[0009] Preferably, the other end of the first elbow is connected to a connecting sleeve, and the inner wall of the connecting sleeve is provided with threads. The connecting sleeve is used to connect pipe fittings.

[0010] Preferably, the other end side wall of the second elbow is provided with a threaded section, which is also convenient for connecting the pipeline.

[0011] The beneficial effects of the present invention are as follows: by forming a retaining ring in the groove between the first bend pipe and the connecting pipe, the connection strength is ensured while the connection structure is greatly simplified, and the demoulding layer provided avoids adhesion between the retaining ring and the first bend pipe, ensuring the rotational connection between the first bend pipe and the second bend pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0013] Figure 2 It is an explosion diagram of the present invention;

[0014] Figure 3 It is a cross-sectional schematic diagram of the connecting pipe of the present invention;

[0015] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0016] List of reference numerals:

[0017] 1. Connecting sleeve; 2. First elbow; 3. Connecting pipe; 4. Second elbow; 5. Threaded section; 6. Retaining ring; 7. O-ring; 8. Sealing ring; 9. Casting hole; 10. Demolding layer. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0019] like Figures 1 to 4As shown, a high-pressure rigid movable joint includes a first bend pipe 2 and a second bend pipe 4. The bending angle of the first bend pipe 2 and the second bend pipe 4 is 90°. One end of the second bend pipe 4 is fixedly connected to a connecting pipe 3, and one end of the first bend pipe 2 extends into the interior of the connecting pipe 3. The rotational connection of the first bend pipe 2 and the second bend pipe 4 is realized through the connecting pipe 3.

[0020] Grooves are provided at corresponding positions on the inner wall of the connecting pipe 3 and the side wall of the first bend pipe 2. Specifically, if the groove on the connecting pipe 3 is the first groove and the groove on the first bend pipe 2 is the second groove, the positions of the first groove and the second groove correspond to each other and form a groove group. According to the connection strength, multiple groove groups can be provided, and a retaining ring 6 is solidified and formed in the groove, that is, the retaining ring 6 is located in the groove group to limit the end of the first bend pipe 2 from detaching from the connecting pipe 3.

[0021] The inner wall of the groove provided on the side wall of the first bend pipe 2 is provided with a demoulding layer 10. The provision of the demoulding layer 10 prevents the retaining ring 6 from adhering to the first bend pipe 2 after molding, making it impossible for the first bend pipe 2 and the second bend pipe 10 to rotate.

[0022] A casting hole 9 is formed on the side wall of the connecting pipe 3 , and the casting hole 9 extends to a groove inside the connecting pipe 3 , that is, the material is fed into the groove through the casting hole 9 .

[0023] An O-ring 7 is sleeved on the side wall of the first bend pipe 2, and a sealing ring 8 is provided at one end of the first bend pipe 2. The sealing ring 8 and the O-ring 7 ensure the seal between the first bend pipe 2 and the connecting pipe 3. At the same time, when the retaining ring 6 is formed, it is necessary to press the sealing ring 8 and set a pre-tightening force to improve its sealing performance.

[0024] The other end of the first elbow 2 is connected to a connecting sleeve 1 , and the inner wall of the connecting sleeve 1 is provided with threads, and is connected to an external pipe fitting through the connecting sleeve 1 .

[0025] The other end side wall of the second bend pipe 4 is provided with a threaded section 5. The same threaded section 5 is also provided to facilitate connection with external pipe fittings.

[0026] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above-mentioned embodiment, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A high-pressure rigid movable joint, characterized in that: It comprises a first curved pipe (2) and a second curved pipe (4), one end of the second curved pipe (4) is fixedly connected to the connecting pipe (3), and one end of the first curved pipe (2) extends into the interior of the connecting pipe (3); Grooves are provided at corresponding positions on the inner wall of the connecting pipe (3) and the side wall of the first curved pipe (2), and a retaining ring (6) is solidified and formed in the groove to prevent the end of the first curved pipe (2) from separating from the connecting pipe (3).

2. A high-pressure rigid movable joint according to claim 1, characterized in that: A demoulding layer (10) is provided on the inner wall of the groove provided on the side wall of the first curved pipe (2).

3. The high-pressure rigid movable joint according to claim 1, characterized in that: A casting hole (9) is provided on the side wall of the connecting pipe (3), and the casting hole (9) extends to a groove inside the connecting pipe (3).

4. The high-pressure rigid movable joint according to claim 1, characterized in that: An O-ring (7) is sleeved on the side wall of the first curved pipe (2), and a sealing ring (8) is provided at one end of the first curved pipe (2).

5. The high-pressure rigid movable joint according to claim 1, characterized in that: The other end of the first curved pipe (2) is connected to a connecting sleeve (1), and the inner wall of the connecting sleeve (1) is provided with threads.

6. The high-pressure rigid movable joint according to claim 1, characterized in that: The other end side wall of the second curved pipe (4) is provided with a threaded section (5).

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