A combined seal joint

Abstract

This utility model provides a combined sealing joint, belonging to the field of pipe fittings. It solves the problem of poor sealing performance of existing joints. This combined sealing joint includes a hollow-structured joint pipe body. Both ends of the joint pipe body are equipped with connecting pipes that communicate with it. A sealing sleeve is fitted on the outer periphery of the connecting pipe to improve sealing strength and prevent water pressure leakage. Hollow-structured tightening members are located on the outer sides of both ends of the joint pipe body. These tightening members connect to external pipe interfaces via internal and external threads and are used for locking and fixing. The connecting pipe and the joint pipe body are integrally formed. A connecting structure is provided between the sealing sleeve and the outer periphery of the connecting pipe to improve connection strength and prevent displacement. The connecting pipe has a sealing ring. The outer surface of the sealing sleeve has an inclined structure. A seal is formed by the tightening and compression of the tightening members. Multiple flanges are located at the inclined end of the sealing sleeve. The flanges form multiple seals through the compression of the tightening members. This utility model has the advantage of high sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of pipe fittings, and relates to a fitting, particularly a combined sealing fitting. Background Technology

[0002] Traditional pipe sealing joints often employ a single sealing ring structure, which is prone to leakage under high-pressure water or hydraulic impact due to insufficient deformation of the sealing surface. Furthermore, the separate design of the sealing sleeve and the connector lacks an effective anti-displacement mechanism, making them susceptible to loosening and failure under vibration. In addition, tightening components often rely on external tools for installation, resulting in low operational efficiency and limited structural strength. Existing technologies struggle to simultaneously achieve high-pressure sealing reliability, displacement resistance stability, and ease of installation. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a combined sealing joint to solve these problems.

[0004] The purpose of this utility model can be achieved through the following technical solution: a combined sealing joint, comprising a hollow joint tube body, characterized in that both ends of the joint tube body are provided with insertion tubes communicating with them, and the outer peripheral wall of the insertion tubes is fitted with a sealing sleeve to improve the sealing strength and prevent water pressure leakage. The outer sides of both ends of the connector tube body are provided with hollow screw fasteners. The screw fasteners are connected to the external pipe interface through internal and external thread engagement and are used for locking and fixing. The insertion tube and the connector tube body are integrally formed. A connection structure is provided between the sealing sleeve and the outer peripheral wall of the insertion tube to improve the connection strength and prevent displacement. The insertion tube is equipped with a sealing ring, and the outer side of the sealing sleeve has an inclined structure. A seal is formed by tightening and squeezing the screws. The inclined structure of the sealing sleeve has multiple flanges at its end, and the flanges form multiple seals by squeezing the screws.

[0005] In the aforementioned combined sealing joint, the connection structure includes several limiting grooves formed on the outer wall of the insertion pipe and several protrusions provided on the inner circumferential wall of the sealing sleeve, wherein the limiting grooves and the protrusions are in concave-convex fit.

[0006] In the aforementioned combined sealing joint, the protrusion and the sealing sleeve are integrally formed and distributed circumferentially along the inner circumferential wall of the sealing sleeve.

[0007] In the aforementioned combined sealing joint, the outer peripheral wall of the tightening member has several spaced extension strips that extend radially outward, and the extension strips are integrally formed with the tightening member.

[0008] Compared with existing technologies, this combined sealing joint structure design combines ease of installation, vibration resistance, and long-term reliability, significantly reducing leakage risks and maintenance costs. It is particularly suitable for scenarios with stringent sealing requirements, such as high-pressure water pipes, hydraulic systems, and chemical pipelines. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of the combined sealing joint.

[0010] Figure 2 This is a three-dimensional structural diagram of the connector tube body in this utility model.

[0011] Figure 3 This is a three-dimensional structural diagram of the sealing sleeve in this utility model.

[0012] In the diagram, 1 is the main body of the connector pipe; 2 is the insertion pipe; 3 is the sealing sleeve; 4 is the tightening part; 5 is the sealing ring; 6 is the flange; 7 is the limiting groove; 8 is the protrusion; and 9 is the extension strip. Detailed Implementation

[0013] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figure 1 , Figure 2 As shown, this combined sealing joint includes a hollow joint pipe body 1. Both ends of the joint pipe body 1 are provided with insertion pipes 2 that communicate with it. The outer peripheral wall of the insertion pipe 2 is fitted with a sealing sleeve 3 to improve the sealing strength and prevent water pressure leakage. The outer sides of both ends of the joint pipe body 1 are provided with hollow tightening parts 4. The tightening parts 4 are connected to the external pipe interface through internal and external thread engagement and are used for locking and fixing. The insertion pipe 2 and the joint pipe body 1 are integrally formed. The sealing sleeve 3 and the outer peripheral wall of the insertion pipe 2 are provided with a connecting structure to improve the connection strength and prevent displacement. The insertion pipe 2 is provided with a sealing ring 5. The outer side of the sealing sleeve 3 is an inclined structure. The seal is formed by the tightening and compression of the tightening parts 4. The inclined structure end of the sealing sleeve 3 is provided with multiple flanges 6. The flanges 6 form multiple seals by the compression of the tightening parts 4.

[0015] The connecting structure includes several limiting grooves 7 formed on the outer wall of the insertion tube 2, and several protrusions 8 formed on the inner circumferential wall of the sealing sleeve 3, wherein the limiting grooves 7 and the protrusions 8 are in concave-convex fit. The protrusions 8 and the sealing sleeve 3 are integrally formed and distributed circumferentially along the inner circumferential wall of the sealing sleeve 3. Several spaced extension strips 9 extend radially outward from the outer circumferential wall of the tightening member 4, and the extension strips 9 and the tightening member 4 are integrally formed.

[0016] Working principle It has a triple sealing mechanism: The first layer of basic sealing is provided by the sealing ring 5 set on the insertion tube 2, which provides an initial seal.

[0017] The second layer is dynamic compression sealing. The inclined structure outside the sealing sleeve 3 is compressed and deformed during the tightening process of the tightening member 4, forming a sealing layer that adheres tightly to the inner wall of the external pipe.

[0018] The third layer is redundant sealing. Multiple flanges 6 at the end of the sealing sleeve 3 are further squeezed and expanded by the tightening part 4 to form multiple annular sealing bands, which enhances the resistance to water pressure leakage.

[0019] The protrusion 8 on the inner wall of the sealing sleeve 3 engages with the limiting groove 7 on the outer wall of the insertion pipe 2 to prevent axial displacement of the sealing sleeve 3 during tightening or vibration. The tightening element 4 connects to the external pipe interface via internal and external threads. When rotated, it pushes the sealing sleeve 3 towards the connector pipe body 1, achieving a compression seal. The extension strip 9 on the outer wall of the tightening element 4 provides a point of force for manual tightening, eliminating the need for special tools.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document uses a considerable amount of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A combined sealing joint, comprising a hollow joint pipe body (1), characterized in that, Both ends of the connector tube body (1) are provided with insertion tubes (2) that communicate with it. The outer peripheral wall of the insertion tube (2) is fitted with a sealing sleeve (3) to improve the sealing strength and prevent water pressure leakage. The outer sides of both ends of the connector pipe body (1) are provided with hollow screw fasteners (4). The screw fasteners (4) are connected to the external pipe interface through internal and external thread engagement and are used for locking and fixing. The insertion tube (2) and the connector tube body (1) are integrally formed. The sealing sleeve (3) and the outer peripheral wall of the insertion tube (2) are provided with a connection structure to improve the connection strength and prevent displacement. The insertion tube (2) is provided with a sealing ring (5), and the outer side of the sealing sleeve (3) is an inclined structure. A seal is formed by the tightening and squeezing of the tightening member (4). The inclined structure end of the sealing sleeve (3) is provided with multiple flanges (6). The flanges (6) form multiple seals by the squeezing of the tightening member (4).

2. The combined sealing joint according to claim 1, characterized in that, The connection structure includes several limiting grooves (7) opened on the outer side wall of the insertion tube (2) and several protrusions (8) provided on the inner peripheral wall of the sealing sleeve (3), wherein the limiting grooves (7) and the protrusions (8) are in concave-convex fit.

3. A combined sealing joint according to claim 2, characterized in that, The protrusion (8) and the sealing sleeve (3) are integrally formed and distributed along the circumferential direction of the inner circumferential wall of the sealing sleeve (3).

4. A combined sealing joint according to claim 1, characterized in that, The outer peripheral wall of the tightening member (4) has several spaced extension strips (9) extending radially outward, and the extension strips (9) and the tightening member (4) are integrally formed.

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