Three-way connector with built-in sealing structure

Abstract

The utility model belongs to the technical field of three-way connectors, and particularly relates to a three-way connector with a built-in sealing structure, which comprises a three-way connector and an external pipeline, a first connecting end is arranged at one end of the three-way connector, a second connecting end is arranged at the other end of the three-way connector, a third connecting end is arranged on the outer side of the three-way connector, and a threaded groove is arranged on the inner wall of the first connecting end. A thread is arranged on the outer side of the end of the external pipeline, the first connecting end comprises a groove, a sealing piece and a silicone grease coating, and the groove is formed in the inner wall of the first connecting end. By means of the groove, the sealing piece, the threaded groove and the spiral threads, the sealing effect can be achieved, the pressure self-tightening effect is formed, the sealing piece can bear pressure brought by circulation media and achieve the pressure self-tightening effect, the sealing performance is guaranteed, and the sealing effect is achieved while the sealing piece has the sealing effect between an external pipeline and the three-way connector. And the friction force between the external pipeline and the three-way connector can be increased, and stable connection between the external pipeline and the three-way connector is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of three -way joint, concretely is a three -way joint of built -in sealing structure. BACKGROUND

[0002] Three -way joint (also known as three -way pipe joint or three -way pipe fitting) is a kind of accessory commonly used in pipeline connection, is usually used to connect three pipelines together, and three -way joint is a common and very important component in pipeline system, which can flexibly meet the needs of different pipeline configurations, and ensure the efficient and safe operation of pipeline system.

[0003] The prior art has the following deficiencies: the prior art with application number 202122837240.5 proposes a plastic three-way joint with a clamping sealing leak-proof structure, which includes a joint body and a connecting pipe. The connecting pipe is fixed to the outside of the joint body for butt joint with an external pipeline. The inside of the connecting pipe is inlaid with a fixed plate, and the inner end of the fixed plate is fixed with a support plate, which provides internal support for the external pipeline. The outside of the support plate is provided with a limiting head, and the outer end of the limiting head is fixed with a movable rod. The movable rod penetrates the connecting pipe and the connecting pipe to form a sliding connection. The plastic three-way joint with clamping sealing leak-proof structure is provided with a sealing air bag and an auxiliary air bag. By pressing the auxiliary air bag with the pressing plate, the gas in the auxiliary air bag is transferred to the sealing air bag, causing the sealing air bag to expand. The gap between the connecting pipe and the external pipeline can be filled, and the butt joint can be sealed to prevent subsequent leakage.

[0004] The above device provides sealing effect between the connecting pipeline and the three-way joint when in use. When the medium flowing in the pipeline has a large pressure and flows through the three-way joint, the sealing effect brought by the air bag alone cannot withstand the pressure of the medium flowing in the pipeline. At the same time, for the connection between the external connecting pipeline and the three-way pipe joint, four sets of support plates and limiting heads are used to limit the external connecting pipeline to ensure stability. The contact area between the four sets of support plates, limiting heads and external connecting pipeline is small, and when the limiting head abuts against the external connecting pipeline, the first spring will contract. The resilience of the spring itself will cause the limiting head to shake, affecting the stability between the external connecting pipeline and the three-way joint. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a three-way joint with built-in sealing structure to solve the problems raised in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: A tee joint with built-in sealing structure, including tee joint, external pipeline, the one end of tee joint is provided with first connecting end, the other end of tee joint is provided with second connecting end, the outside of tee joint is provided with third connecting end, the first connecting end inner wall is provided with thread groove, the outside of external pipeline end portion is provided with helical thread;

[0007] The first connecting end includes a groove, a sealing element, and a silicone coating. The first connecting end inner wall is provided with a groove, the groove is provided with a sealing element, and the outer side of the sealing element is coated with a silicone coating.

[0008] As a preferred technical scheme of the utility model: the tee joint and the first connecting end, the second connecting end, the third connecting end are integrally formed, the first connecting end, the second connecting end, the third connecting end are consistent in specification and are interconnected.

[0009] As a preferred technical scheme of the utility model: the groove is helical, and the groove is arranged between the pitches of the thread groove.

[0010] As a preferred technical scheme of the utility model: the sealing element is helical and is adapted to the groove, and the sealing element is fixedly installed in the groove.

[0011] As a preferred technical scheme of the utility model: the depth of the groove is consistent with the cross-sectional radius of the sealing element, and the sealing element is made of NBR rubber.

[0012] As a preferred technical scheme of the utility model: the outer diameter of the external pipeline is adapted to the inner diameter of the first connecting end, the helical thread is integrally formed with the external pipeline, the helical thread is adapted to the thread groove, and the external pipeline is threadedly connected with the first connecting end.

[0013] As a preferred technical scheme of the utility model: the internal structures of the first connecting end, the second connecting end, and the third connecting end are consistent, and the first connecting end, the second connecting end, and the third connecting end have the same connection mode with the corresponding external pipeline.

[0014] Compared with the prior art, the utility model provides a tee joint with built-in sealing structure, which has the following beneficial effects:

[0015] 1. The tee joint with built-in sealing structure, through the setting of the groove, the sealing element, the threaded groove, the helical thread, when the external pipeline is connected with the first connecting end, the sealing element is compressed axially in the groove and is deformed radially, the sealing element expands to the surroundings after the deformation, fills the tiny gap generated between the external pipeline and the first connecting end, forms the sealing effect, the pressure brought by the circulating medium acts on the sealing element, and the sealing element is more tightly attached between the external pipeline and the tee joint, the greater the pressure, the more tightly the sealing element, forms the pressure self-tightening effect, the sealing element can bear the pressure brought by the circulating medium and achieves the pressure self-tightening effect, and the sealing property is guaranteed.

[0016] 2. The tee joint with built-in sealing structure, through the setting of the sealing element, the threaded groove and the helical thread, the sealing element can increase the friction between the external pipeline and the tee joint while bringing the sealing effect between the external pipeline and the tee joint, and the connection stability between the external pipeline and the tee joint is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole external structure schematic view of the utility model;

[0018] Figure 2 It is the first connecting end internal structure schematic view of the utility model;

[0019] Figure 3 It is the separation of the sealing element and the groove schematic view of the utility model;

[0020] Figure 4 It is the connection of the tee joint and the external pipeline schematic view of the utility model.

[0021] In the drawing: 1, tee joint; 2, first connecting end; 201, groove; 202, sealing element; 203, silicone grease coating; 3, second connecting end; 4, third connecting end; 5, threaded groove; 6, external pipeline; 7, helical thread. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Please refer to Figures 1-4In the embodiment, the three-way joint with a built-in sealing structure comprises a three-way joint 1, an external pipeline 6, a first connecting end 2 arranged at one end of the three-way joint 1, a second connecting end 3 arranged at the other end of the three-way joint 1, a third connecting end 4 arranged at the outer side of the three-way joint 1, a threaded groove 5 formed in the inner wall of the first connecting end 2, and a helical thread 7 arranged at the outer side of the end portion of the external pipeline 6.

[0024] The first connecting end 2, the second connecting end 3, and the third connecting end 4 can facilitate the connection of the three-way joint 1 and the external pipeline 6.

[0025] The first connecting end 2 comprises a groove 201, a sealing element 202, and a silicone coating 203. The groove 201 is formed in the inner wall of the first connecting end 2, the sealing element 202 is arranged in the groove 201, and the silicone coating 203 is coated on the outer side of the sealing element 202.

[0026] The silicone coating 203 can reduce friction and prevent the sealing element 202 from being torn when the external pipeline 6 is tightened.

[0027] In the embodiment, the three-way joint 1 is integrally formed with the first connecting end 2, the second connecting end 3, and the third connecting end 4. The first connecting end 2, the second connecting end 3, and the third connecting end 4 are of the same specification and are in communication with each other. The groove 201 is helical. The groove 201 is formed between the pitches of the threaded groove 5. The sealing element 202 is helical and is adapted to the groove 201. The sealing element 202 is fixedly installed in the groove 201.

[0028] Specifically, the groove 201 facilitates the installation of the sealing element 202. The sealing element 202 can form a sealing effect, can withstand the pressure caused by the flowing medium, and can achieve a pressure self-tightening effect, thereby ensuring the sealing performance.

[0029] In the embodiment, the depth of the groove 201 is consistent with the cross-sectional radius of the sealing element 202. The sealing element 202 is made of NBR rubber. The outer diameter of the external pipeline 6 is adapted to the inner diameter of the first connecting end 2. The helical thread 7 is integrally formed with the external pipeline 6. The helical thread 7 is adapted to the threaded groove 5. The external pipeline 6 is threadedly connected with the first connecting end 2. The internal structures of the first connecting end 2, the second connecting end 3, and the third connecting end 4 are consistent. The first connecting end 2, the second connecting end 3, and the third connecting end 4 have the same connection mode with the corresponding external pipeline 6.

[0030] Specifically, the helical thread 7 and the threaded groove 5 can form a threaded connection between the external pipeline 6 and the three-way joint 1.

[0031] The working principle and use process of the utility model: taking the connection between the external pipeline 6 and the first connecting end 2 as an example, when connecting the external pipeline 6 and the first connecting end 2, first wipe the screw groove 5 and the helical thread 7 with non-woven fabric, then coat a small amount of silicon grease coating 203 on the outer side of the sealing element 202, reduce friction, prevent the external pipeline 6 from tearing the sealing element 202 when tightening, then rotate the tee joint 1, make the external pipeline 6 and the first connecting end 2 tightly tighten, in the tightening process, the sealing element 202 is axially compressed in the groove 201 and produces radial deformation, the sealing element 202 produces radial deformation and expands to all directions, fills the small gap between the external pipeline 6 and the first connecting end 2, forms a sealing effect, when the medium in the external pipeline 6 has pressure, the pressure brought by the medium acts on the sealing element 202, instead of making the sealing element 202 more tightly adhere between the external pipeline 6 and the first connecting end 2, the greater the pressure, the more tightly the sealing element 202, forms a pressure self-tightening effect, the sealing element 202 can bear the pressure brought by the circulating medium and achieve the pressure self-tightening effect, guarantee the sealing property, the connection structure between the second connecting end 3, the third connecting end 4 and the corresponding external pipeline 6 is the same as above, at the same time, the sealing element 202 brings the sealing effect between the external pipeline 6 and the tee joint 1, also can increase the friction between the external pipeline 6 and the tee joint 1, guarantee the connection stability between the external pipeline 6 and the tee joint 1.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A tee joint with built-in sealing structure, comprising a tee joint (1), an external pipeline (6), a first connecting end (2) arranged at one end of the tee joint (1), a second connecting end (3) arranged at the other end of the tee joint (1), and a third connecting end (4) arranged at the outer side of the tee joint (1), characterized in that: The inner wall of the first connecting end (2) is provided with a threaded groove (5), and the outer side of the end of the external pipeline (6) is provided with a helical thread (7). The first connecting end (2) comprises a groove (201), a sealing element (202) and a silicone coating (203), the inner wall of the first connecting end (2) is provided with a groove (201), the groove (201) is provided with a sealing element (202), and the outer side of the sealing element (202) is coated with a silicone coating (203).

2. The tee fitting with a built-in seal structure according to claim 1, characterized in that: The tee joint (1) is integrally formed with the first connecting end (2), the second connecting end (3) and the third connecting end (4), the first connecting end (2), the second connecting end (3) and the third connecting end (4) are of the same specification and are in communication with each other.

3. The seal-in-structure tee joint of claim 1, wherein: The groove (201) is helical, and the groove (201) is provided between the pitches of the threaded groove (5).

4. The seal-in-structure tee joint of claim 1, wherein: The sealing element (202) is helical and is adapted to the groove (201), and the sealing element (202) is fixedly installed in the groove (201).

5. The seal-in-structure tee joint of claim 1, wherein: The depth of the groove (201) is consistent with the cross-sectional radius of the sealing element (202), and the sealing element (202) is made of NBR rubber.

6. The seal-in-structure tee joint of claim 1, wherein: The outer diameter of the external pipeline (6) is adapted to the inner diameter of the first connecting end (2), the helical thread (7) is integrally formed with the external pipeline (6), the helical thread (7) is adapted to the threaded groove (5), and the external pipeline (6) is threadedly connected with the first connecting end (2).

7. The seal-in-structure tee joint of claim 1, wherein: The internal structures of the first connecting end (2), the second connecting end (3) and the third connecting end (4) are consistent, and the first connecting end (2), the second connecting end (3) and the third connecting end (4) are connected with the corresponding external pipelines (6) in the same way.

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