Pipe joint connecting structure

Abstract

The utility model relates to a pipe joint connecting structure, which belongs to the technical field of pipe joints and comprises a pipe joint main body, a connecting pipeline, an external auxiliary sealing ring, an internal main sealing ring, a first hoop, a second hoop and a positioning screw, the pipe joint main body and the connecting pipeline are respectively provided with a connecting flange, and the external auxiliary sealing ring is arranged at a gap between the connecting flanges on two sides. According to the utility model, the hoop structure is arranged to stably and mechanically support and limit the joint of the pipe joint and the pipeline, the guide groove is arranged in the hoop, and the screw locking mechanism is arranged outside the hoop, so that the joint can be stably limited, and the hoop is convenient to disassemble, assemble and replace; the two groups of sealing rings are provided with clamping groove structures and can be stably arranged at the joint of the pipe joint, so that static sealing can be effectively performed on the joint of the pipe joint, fluid pressure in a pipeline can be borne, and a metal spring supporting structure is arranged at the position of the built-in main sealing ring and can automatically compensate a gap after the sealing rings are abraded.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting technology, and in particular to a pipe fitting connection structure. Background Technology

[0002] Pipe fittings are mechanical components used to connect pipes, hoses, or other fluid transmission systems. Their main function is to ensure a sealed connection between pipes while allowing fluids (liquids, gases, etc.) to be reliably transmitted in different equipment or pipelines. They are widely used in industries such as industry, construction, automobiles, and hydraulic systems.

[0003] A search revealed that Chinese patent CN201821369554.9 discloses a copper pipe connector connection structure. By setting a flared end at the end of the copper pipe, the flared end can be connected to the connector end of the connector, allowing for repeated disassembly and reuse. This structure is less prone to leakage and provides high connection strength, making copper pipe connections more convenient.

[0004] The above-mentioned technical solution has the following drawbacks: although such a pipe joint connection structure can be connected through end flaring and end connecting nozzles, it is inconvenient to fully seal the connection of the pipe joint in actual use. In order to improve the sealing performance, connection strength and ease of installation of the pipe joint connection structure, a pipe joint connection structure is proposed. It is equipped with a clamp structure to provide stable mechanical support and limit the connection between the pipe joint and the pipeline. The clamp has a built-in guide groove and an external screw locking mechanism, which can stably limit the connection and facilitate disassembly and replacement. It is equipped with an outer sealing ring and an inner sealing ring. Both sets of sealing rings are equipped with a groove structure to be stably placed at the connection of the pipe joint, thereby effectively providing static sealing at the connection of the pipe joint and withstanding the fluid pressure in the pipeline. A metal spring support structure is provided at the built-in main sealing ring. The metal spring compresses the built-in main sealing ring, thereby automatically compensating for the gap after the sealing ring wears, thus ensuring the sealing effect of the built-in main sealing ring.

[0005] In view of this, this work improves and solves the above problems. Through dedicated research and application of theoretical principles, a technical solution with a reasonable design that can effectively improve the above defects has finally been proposed.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] This utility model provides a pipe joint connection structure that solves the problems mentioned in the background. It is equipped with a clamp structure to provide stable mechanical support and limit the connection between the pipe joint and the pipeline, and is equipped with an outer sealing ring and an inner sealing ring to effectively seal and protect the connection of the pipe joint.

[0008] The present invention provides the following solution to the above-mentioned technical problems: a pipe joint connection structure, comprising a pipe joint body, a connecting pipe, an external secondary sealing ring, an internal main sealing ring, a first clamp and a second clamp, and positioning screws. Both the pipe joint body and the connecting pipe are provided with connecting flanges. The external secondary sealing ring is placed in the gap between the two connecting flanges. The pipe joint body is provided with a pipe insertion end. The connecting pipe is provided with a connecting slot corresponding to the pipe insertion end. The internal main sealing ring is snapped into the end of the pipe insertion end. The pipe insertion end has an annular positioning groove corresponding to the internal main sealing ring. A compression ring is placed in the annular positioning groove. Two compression rings are provided, and a return spring is evenly fixedly installed in the gap between the two compression rings. The first clamp and the second clamp are rotatably connected. Both the first clamp and the second clamp are provided with connectors. The connectors on both sides can be positioned by positioning screws. The first clamp and the second clamp have limit grooves corresponding to the connecting flanges.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the outer walls of the connecting flange and the external secondary sealing ring are provided with an arc-shaped structure, and the outer walls of the connecting flange and the external secondary sealing ring can be spliced ​​into a semi-circular structure. The limiting groove is set as a semi-circular structure corresponding to the connecting flange and the external secondary sealing ring. The arc-shaped groove can stably limit the external secondary sealing ring at the connecting flanges on both sides and the gap. After the hoop is stably connected, the connecting flanges on both sides can stably clamp the external secondary sealing ring, thereby maintaining the sealing performance and connection strength of the connection.

[0011] Furthermore, the external auxiliary sealing ring is provided with an annular rubber ring, and the connecting pipe has an annular groove corresponding to the annular rubber ring, so that the external auxiliary sealing ring can be stably installed on the connecting end of the connecting pipe.

[0012] Furthermore, a dust cover is installed at the gap between the two compression rings. The dust cover encloses the return spring, which can protect the return spring and improve its service life.

[0013] Furthermore, the first hoop has one connector, and the second hoop has two connectors. The connector of the second hoop can be placed in the gap between the two connectors of the first hoop.

[0014] Furthermore, one connector of the second hoop has a screw hole corresponding to the positioning screw, and the other connector has a through hole corresponding to the positioning screw, so that the three connectors on both sides can be positioned by the positioning screw.

[0015] Furthermore, a sealing gasket is provided in the limiting groove, so that the sealing gasket can act as a third seal to seal and protect the connection of the pipe joint.

[0016] Furthermore, the built-in main sealing ring is provided with an annular protrusion structure, which can be inserted into an annular positioning groove, so that the built-in main sealing ring can be stably installed at the end of the pipe insertion end.

[0017] This utility model provides a pipe joint connection structure, which has the following advantages:

[0018] 1. The built-in main sealing ring can be installed on the end of the connecting pipe, and the external secondary sealing ring can be snapped onto the end of the pipe fitting body. The pipe insertion end of the connecting pipe is directly inserted into the connecting slot of the pipe fitting body. The first clamp and the second clamp can be fitted onto the connecting flange at the pipe fitting connection. The first clamp and the second clamp can be positioned by the positioning screw. Unscrewing the positioning screw can release the positioning of the first clamp and the second clamp, thereby releasing the fixation. This connection structure facilitates the disassembly and assembly of the pipe fitting.

[0019] 2. The built-in main sealing ring can serve as the first seal, the external secondary sealing ring can serve as the second seal to protect the connection of the pipe joint structure, and the sealing gaskets of the first and second clamps can serve as the third seal to seal and protect the connection of the pipe joint, thus ensuring the sealing effect of the connection structure.

[0020] 3. The return spring at the compression ring can support the built-in main sealing ring. The aged and worn built-in main sealing ring can maintain the sealing effect under the elastic action of the spring.

[0021] 4. This type of pipe joint connection structure is equipped with a clamp structure to provide stable mechanical support and limit the connection between the pipe joint and the pipeline. The clamp has a built-in guide groove and an external screw locking mechanism, which can stably limit the connection and facilitate disassembly and replacement. It is equipped with an outer sealing ring and an inner sealing ring. Both sets of sealing rings are equipped with a groove structure to be stably placed at the connection of the pipe joint, thereby effectively providing static sealing at the connection of the pipe joint and withstanding the fluid pressure in the pipeline. A metal spring support structure is set at the built-in main sealing ring. The metal spring compresses the built-in main sealing ring, thereby automatically compensating for the gap after the sealing ring wears, thus ensuring the sealing effect of the built-in main sealing ring.

[0022] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 A front view of a pipe connector connection structure provided in an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the pipe joint body and the connection point of the connecting pipe in a pipe joint connection structure provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the closed state of the hoop in a pipe joint connection structure according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the hoop in the open state of a pipe joint connection structure according to an embodiment of the present invention;

[0028] Figure 5 A three-dimensional rendering of a pipe joint connection structure with a built-in main sealing ring and a compression ring provided in an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the connector structure in a pipe fitting connection structure according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of a pipe connector connection structure provided in an embodiment of the present invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Pipe fitting body; 2. Connecting pipe; 3. Connecting flange; 4. External secondary sealing ring; 5. Pipe insertion end; 6. Connecting slot; 7. Internal main sealing ring; 8. Annular positioning groove; 9. Compression ring; 10. Return spring; 11. Dust cover; 12. No. 1 clamp; 13. No. 2 clamp; 14. Connector; 15. Positioning screw; 16. Limiting groove; 17. Sealing gasket. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-7 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0034] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] like Figure 1-7 As shown, a pipe fitting connection structure includes a pipe fitting body 1, a connecting pipe 2, an external secondary sealing ring 4, an internal main sealing ring 7, a first clamp 12 and a second clamp 13, and a positioning screw 15. Both the pipe fitting body 1 and the connecting pipe 2 are provided with connecting flanges 3. The external secondary sealing ring 4 is placed in the gap between the two connecting flanges 3. The pipe fitting body 1 is provided with a pipe insertion end 5. The connecting pipe 2 is provided with a connecting slot 6 corresponding to the pipe insertion end 5. The internal main sealing ring 7 is snapped into the end of the pipe insertion end 5. The pipe insertion end 5 is provided with an annular positioning groove 8 corresponding to the internal main sealing ring 7. A compression ring 9 is placed in the annular positioning groove 8. There are two compression rings 9. A return spring 10 is evenly fixed in the gap between the two compression rings 9. The first clamp 12 and the second clamp 13 are rotatably connected. Both the first clamp 12 and the second clamp 13 are provided with connectors 14. The connectors 14 on both sides can be positioned by positioning screws 15. The first clamp 12 and the second clamp 13 are provided with limit grooves 16 corresponding to the connecting flanges 3.

[0037] Preferably, the outer walls of the connecting flange 3 and the external secondary sealing ring 4 are provided with an arc-shaped structure. The outer walls of the connecting flange 3 and the external secondary sealing ring 4 can be spliced ​​into a semi-circular structure. The limiting groove 16 is set as a semi-circular structure corresponding to the connecting flange 3 and the external secondary sealing ring 4. The arc-shaped groove can stably limit the connecting flange 3 on both sides and the external secondary sealing ring 4 at the gap. After the hoop is stably connected, the connecting flange 3 on both sides can stably clamp the external secondary sealing ring 4, thereby maintaining the sealing performance and connection strength of the connection.

[0038] Preferably, the external auxiliary sealing ring 4 is provided with an annular rubber ring, and the connecting pipe 2 has an annular groove corresponding to the annular rubber ring, so that the external auxiliary sealing ring 4 can be stably installed on the connecting end of the connecting pipe 2.

[0039] Preferably, a dust cover 11 is installed at the gap between the two compression rings 9. The dust cover 11 wraps around the reset spring 10, which can protect the reset spring 10 and improve its service life.

[0040] Preferably, the first hoop 12 has one connector 14 and the second hoop 13 has two connectors 14. The connector 14 of the second hoop 13 can be placed in the gap between the two connectors 14 of the first hoop 12.

[0041] Preferably, one connector 14 of the second clamp 13 has a screw hole corresponding to the positioning screw 15, and the other connector 14 has a through hole corresponding to the positioning screw 15, so that the three connectors 14 on both sides can be positioned by the positioning screw 15.

[0042] Preferably, a sealing gasket 17 is provided in the limiting groove 16, so that the sealing gasket 17 can act as a third seal to seal and protect the connection of the pipe joint.

[0043] Preferably, the built-in main sealing ring 7 is provided with an annular protrusion structure, which can be inserted into the annular positioning groove 8, so that the built-in main sealing ring 7 can be stably installed at the end of the pipe insertion end 5.

[0044] The specific working principle and usage method of this utility model are as follows: The compression ring 9, equipped with a reset spring 10, is placed into the annular positioning groove 8. Then, the built-in main sealing ring 7 is inserted into the annular positioning groove 8 of the pipe insertion end 5, allowing the built-in main sealing ring 7 to be mounted on the end of the connecting pipe 2. The external secondary sealing ring 4 can be mounted on the end of the pipe connector body 1. The pipe insertion end 5 of the connecting pipe 2 is directly inserted into the connecting slot 6 of the pipe connector body 1. The built-in main sealing ring 7 serves as the first seal, and the external secondary sealing ring 4 serves as the second seal to protect the connection point of the pipe connector structure. The first clamp 12 and the second clamp 13 can be fitted onto the pipe connector connection point. At the connecting flange 3, the connector 14 of the first clamp 12 can be placed between the two connectors 14 of the second clamp 13. The first clamp 12 and the second clamp 13 can be positioned by the positioning screw 15. The sealing gasket 17 of the first clamp 12 and the second clamp 13 can act as a third seal to seal and protect the connection of the pipe joint. The return spring 10 at the compression ring 9 can support the built-in main sealing ring 7. The aged and worn built-in main sealing ring 7 can ensure the sealing effect under the elastic action of the spring. By unscrewing the positioning screw 15, the positioning of the first clamp 12 and the second clamp 13 can be released, thereby removing the fixation and facilitating the disassembly and assembly of the pipe joint.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A pipe fitting connection structure, comprising a pipe fitting body (1), a connecting pipe (2), an external secondary sealing ring (4), an internal main sealing ring (7), a compression ring (9), a first clamp (12) and a second clamp (13), and a positioning screw (15), characterized in that: Both the pipe fitting body (1) and the connecting pipe (2) are provided with connecting flanges (3). The external secondary sealing ring (4) is placed in the gap between the two connecting flanges (3). The pipe fitting body (1) is provided with a pipe insertion end (5). The connecting pipe (2) is provided with a connecting slot (6) corresponding to the pipe insertion end (5). The built-in main sealing ring (7) is snapped into the end of the pipe insertion end (5). The pipe insertion end (5) is provided with an annular positioning groove (8) corresponding to the built-in main sealing ring (7). The compression ring (9) The compression ring (9) is placed in the annular positioning groove (8). There are two compression rings (9). A return spring (10) is evenly fixed in the gap between the two compression rings (9). The first hoop (12) and the second hoop (13) are rotatably connected. Both the first hoop (12) and the second hoop (13) are provided with a connector (14). The connectors (14) on both sides can be positioned by positioning screws (15). The first hoop (12) and the second hoop (13) have a limit groove (16) on the corresponding connecting flange (3).

2. The pipe fitting connection structure according to claim 1, characterized in that, The outer walls of the connecting flange (3) and the external secondary sealing ring (4) are provided with an arc-shaped structure. The outer walls of the connecting flange (3) and the external secondary sealing ring (4) can be spliced ​​into a semi-circular structure. The limiting groove (16) is set as a semi-circular structure corresponding to the connecting flange (3) and the external secondary sealing ring (4).

3. The pipe fitting connection structure according to claim 1, characterized in that, The external auxiliary sealing ring (4) is provided with an annular rubber ring, and the connecting pipe (2) is provided with an annular groove corresponding to the annular rubber ring.

4. The pipe joint connection structure according to claim 1, characterized in that, A dust cover (11) is installed at the gap between the two compression rings (9), and the dust cover (11) wraps around the return spring (10).

5. The pipe fitting connection structure according to claim 1, characterized in that, The first hoop (12) has one connector (14), and the second hoop (13) has two connectors (14).

6. The pipe fitting connection structure according to claim 5, characterized in that, One connector (14) of the second hoop (13) is provided with a screw hole corresponding to the positioning screw (15), and the other connector (14) is provided with a through hole corresponding to the positioning screw (15).

7. The pipe joint connection structure according to claim 1, characterized in that, A sealing gasket (17) is provided inside the limiting groove (16).

8. The pipe fitting connection structure according to claim 1, characterized in that, The built-in main sealing ring (7) is provided with an annular protrusion structure, which can be inserted into the annular positioning groove (8).

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