Leak-proof tee pipe fitting connection joint

Abstract

This utility model discloses a leak-proof tee pipe fitting connector, comprising a tee pipe fitting body and three connecting straight pipes. Each of the three ends of the tee pipe fitting body is fixedly connected to a connector. Each connector has two connecting grooves on one side, two symmetrical snap-fit ​​structures on each connector, and a sliding groove inside each connector. This utility model, by incorporating a push ring, an auxiliary sealing ring, and a second return spring, allows the auxiliary sealing ring on the inner wall of the push ring to tightly adhere to the outer wall of the connecting straight pipe under the elastic force of the second return spring. Conversely, the auxiliary sealing ring on the outer wall of the push ring tightly adheres to the inner wall of the sliding groove, thus forming an auxiliary seal. When thermal expansion and contraction cause changes in the outer diameter of the tee pipe fitting body or the connecting straight pipes, leading to leakage, this auxiliary sealing assembly provides a secondary seal, effectively improving sealing reliability and preventing leakage.

Description

Technical Field

[0001] This utility model relates to the field of tee fittings technology, and in particular to a leak-proof tee fitting connector. Background Technology

[0002] Tee fittings are indispensable connecting elements in fluid transport systems and are widely used in water supply and drainage, fire protection, HVAC, and industrial pipelines. The sealing reliability of their connections directly affects the safe and stable operation of the entire system.

[0003] However, in the existing technology, the pipe is inserted into the tee fitting interface, and the main sealing ring is squeezed by the outer wall of the pipe. The elastic deformation of the sealing ring fills the gap between the pipe and the socket, thereby achieving a seal. However, the pre-tightening force of the main sealing ring mainly depends on its own elasticity and the interference fit when the pipe is inserted. If the outer diameter of the pipe changes slightly due to thermal expansion and contraction, the main sealing ring cannot provide a continuous and stable clamping force, which is prone to leakage under pressure fluctuation or vibration conditions. Therefore, a leak-proof tee fitting connection joint is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a leak-proof tee pipe fitting connector.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a leak-proof tee pipe fitting connector, comprising a tee pipe fitting body and three connecting straight pipes, wherein each of the three ends of the tee pipe fitting body is fixedly connected with a plug pipe, each plug pipe has two connecting grooves on one side, each plug pipe has two symmetrical snap-fit ​​structures, each plug pipe has a sliding groove inside, and each sliding groove has an auxiliary sealing component inside;

[0006] The auxiliary sealing assembly includes a push ring slidably connected to the inner wall of the sliding groove. The inner and outer walls of the push ring are provided with first sealing grooves. Each first sealing groove is fitted with an auxiliary sealing ring. The auxiliary sealing ring on the inner wall of the push ring is tightly attached to the outer wall of the connecting straight pipe, while the auxiliary sealing ring on its outer wall is tightly attached to the inner wall of the sliding groove, thereby forming an auxiliary seal.

[0007] As a further description of the above technical solution:

[0008] Multiple second return springs are fixedly connected to one side of the inner side of the sliding groove. The other end of each second return spring is fixedly connected to one side of the push ring. Each second return spring is made of stainless steel. The outer wall of the connecting straight tube will also push the push ring, causing it to move the two auxiliary sealing rings and compress the multiple second return springs. Under the elastic force of the second return springs, the push ring is pushed.

[0009] As a further description of the above technical solution:

[0010] Two connecting blocks are symmetrically fixed to the outer wall of each connecting straight pipe. Each connecting block has a snap-fit ​​hole on one side and each connecting block is adapted to the corresponding connecting groove. When the connecting straight pipe is inserted, the connecting block first slides into the connecting groove to ensure correct alignment.

[0011] As a further description of the above technical solution:

[0012] The three-way fitting body has three limit grooves on the inner walls of its three pipes. Each limit groove has three second sealing grooves on its inner wall. Each second sealing groove has a main sealing ring snapped into it. The three main sealing rings form a multi-level seal. The main sealing rings constitute the first line of defense for the main seal, which greatly improves the reliability of the main seal.

[0013] As a further description of the above technical solution:

[0014] The snap-fit ​​structure includes a fixed frame fixedly connected to the outer wall of the insertion tube. A sliding rod is slidably connected through one side of the fixed frame. A fork is rotatably connected to one end of the sliding rod. One side of the fork is in contact with the outer side of the fixed frame. When the fork is moved, the fork drives the inclined snap-fit ​​block to disengage from the snap-fit ​​hole through the sliding rod, which facilitates the disassembly of the straight tube.

[0015] As a further description of the above technical solution:

[0016] The other end of the sliding rod is fixedly connected to an inclined snap-fit ​​block. The inclined snap-fit ​​block is slidably connected to the outer wall of the insertion tube and is adapted to the corresponding snap-fit ​​hole. One side of the connecting block pushes the inclined snap-fit ​​block to move through the inclined surface of the inclined snap-fit ​​block. The inclined snap-fit ​​block pushes the sliding rod to move and compresses the corresponding first return spring.

[0017] As a further description of the above technical solution:

[0018] A first return spring is sleeved on the sliding rod. One end of the first return spring is fixedly connected to the inside side of the fixed frame, and the other end is fixedly connected to one side of the inclined snap-fit ​​block. Under the elastic reset of the first return spring, the inclined snap-fit ​​block is pushed into the corresponding snap-fit ​​hole to snap-fit ​​and fix the connecting straight pipe, thereby improving the connection efficiency.

[0019] This utility model has the following beneficial effects:

[0020] 1. Compared with existing technologies, this leak-proof tee fitting connector, by setting a push ring, auxiliary sealing rings, and second return springs, allows the outer wall of the connecting straight pipe to push the push ring during the insertion process. This push ring moves the two auxiliary sealing rings and compresses multiple second return springs. Under the elastic force of the second return springs, the auxiliary sealing rings on the inner wall of the push ring tightly adhere to the outer wall of the connecting straight pipe, while the auxiliary sealing rings on the outer wall of the push ring tightly adhere to the inner wall of the sliding groove, thus forming an auxiliary seal. When thermal expansion and contraction cause changes in the outer diameter of the tee fitting body or the connecting straight pipe, leading to leakage, this auxiliary sealing assembly can provide a secondary seal, effectively improving sealing reliability and preventing leakage.

[0021] 2. Compared with the prior art, this leak-proof tee pipe fitting connector, by setting a fixed frame, sliding rod, inclined snap-fit ​​block, fork and first return spring, etc., one side of the connecting block pushes the inclined snap-fit ​​block to move through the inclined surface of the inclined snap-fit ​​block, the inclined snap-fit ​​block pushes the sliding rod to move and compresses the corresponding first return spring. When the snap-fit ​​hole on the connecting block moves to the bottom of the inclined snap-fit ​​block, under the elastic reset of the first return spring, the inclined snap-fit ​​block is pushed to snap into the corresponding snap-fit ​​hole, thereby snapping and fixing the connecting straight pipe and improving the connection efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a leak-proof tee pipe fitting connector proposed in this utility model;

[0023] Figure 2 This is a cross-sectional view of a leak-proof tee pipe fitting connector proposed in this utility model;

[0024] Figure 3 This utility model proposes a leak-proof tee pipe fitting connection joint. Figure 2 Enlarged view of section A in the middle;

[0025] Figure 4 This utility model proposes a leak-proof tee pipe fitting connection joint. Figure 2 Enlarged view of section B;

[0026] Figure 5 Exploded view of the tee fitting body and connecting straight pipe of the leak-proof tee fitting connector proposed in this utility model;

[0027] Figure 6 This is a cross-sectional view of the straight pipe of a leak-proof tee fitting connector proposed in this utility model;

[0028] Figure 7 Exploded view of the auxiliary sealing component of a leak-proof tee pipe fitting connector proposed in this utility model;

[0029] Figure 8 This is an exploded view of the snap-fit ​​structure of a leak-proof tee pipe fitting connector proposed in this utility model.

[0030] Legend:

[0031] 1. Tee fitting body; 2. Connecting straight pipe; 3. Connecting block; 4. Insert pipe; 5. Connecting groove; 6. Snap-fit ​​structure; 601. Fixing frame; 602. Sliding rod; 603. Angled snap-fit ​​block; 604. Fork; 605. First return spring; 7. Sliding groove; 8. Auxiliary sealing assembly; 801. Push ring; 802. Auxiliary sealing ring; 803. Second return spring; 9. Limiting groove; 10. Second sealing groove; 11. Main sealing ring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 8 This utility model provides a leak-proof tee pipe fitting connector: it includes a tee pipe fitting body 1 and three connecting straight pipes 2. Each of the three ends of the tee pipe fitting body 1 is fixedly connected to a connector 4. Each connector 4 has two connecting grooves 5 on one side, and two symmetrical snap-fit ​​structures 6 on each connector 4. Each connector 4 has a sliding groove 7 inside, and an auxiliary sealing component 8 inside each sliding groove 7. Two connecting blocks 3 are symmetrically fixedly connected to the outer wall of each connecting straight pipe 2. Each connecting block 3... Each side has a snap-fit ​​hole, and each connecting block 3 is adapted to the corresponding connecting groove 5. When the connecting straight pipe 2 is inserted, the connecting block 3 first slides into the connecting groove 5 to ensure correct alignment. The inner walls of the three pipes of the tee fitting body 1 are provided with limit grooves 9. The inner wall of each limit groove 9 is provided with three second sealing grooves 10. Each second sealing groove 10 is snapped with a main sealing ring 11. The three main sealing rings 11 form a multi-level seal. The main sealing rings 11 constitute the first main sealing defense line, which greatly improves the reliability of the main seal.

[0034] To achieve auxiliary sealing, the auxiliary sealing assembly 8 includes a push ring 801 slidably connected to the inner wall of the sliding groove 7. Both the inner and outer walls of the push ring 801 have first sealing grooves, and each first sealing groove contains an auxiliary sealing ring 802. Multiple second return springs 803 are fixedly connected to one side of the sliding groove 7, and the other end of each second return spring 803 is fixedly connected to one side of the push ring 801. Each second return spring 803 is made of stainless steel. During insertion, the outer wall of the connecting straight tube 2 also pushes the push ring 801. This causes the two auxiliary sealing rings 802 to move and compress multiple second return springs 803. Under the elastic force of the second return springs 803, the auxiliary sealing rings 802 on the inner wall of the ring 801 are pushed to fit tightly against the outer wall of the connecting straight pipe 2, while the auxiliary sealing rings 802 on the outer wall fit tightly against the inner wall of the sliding groove 7, thereby forming an auxiliary seal. When the outer diameter of the tee fitting body 1 or the connecting straight pipe 2 changes due to thermal expansion and contraction and causes leakage, the auxiliary sealing assembly 8 can provide a secondary seal, effectively improving the sealing reliability and preventing leakage.

[0035] To achieve rapid connection, the snap-fit ​​structure 6 includes a fixed frame 601 fixedly connected to the outer wall of the insertion tube 4. A sliding rod 602 is slidably connected through one side of the fixed frame 601. One end of the sliding rod 602 is rotatably connected to a fork 604, one side of which is in contact with the outer side of the fixed frame 601. The other end of the sliding rod 602 is fixedly connected to a beveled snap-fit ​​block 603. A first return spring 605 is sleeved on the sliding rod 602. One end of the first return spring 605 is fixedly connected to the inner side of the fixed frame 601, and the other end is fixedly connected to the beveled snap-fit ​​block 603. The side-fixed connection has an inclined snap-fit ​​block 603 that slides through the outer wall of the insertion pipe 4 and is adapted to the corresponding snap-fit ​​hole. One side of the connecting block 3 pushes the inclined snap-fit ​​block 603 to move through the inclined surface of the inclined snap-fit ​​block 603. The inclined snap-fit ​​block 603 pushes the sliding rod 602 to move and compresses the corresponding first return spring 605. When the snap-fit ​​hole on the connecting block 3 moves to the bottom of the inclined snap-fit ​​block 603, under the elastic reset of the first return spring 605, the inclined snap-fit ​​block 603 is pushed into the corresponding snap-fit ​​hole to snap and fix the connecting straight pipe 2, thereby improving the connection efficiency.

[0036] Working principle: The connecting straight pipe 2 is inserted into the corresponding through pipe of the tee fitting body 1, causing the connecting block 3 to slide into the corresponding connecting groove 5. One side of the connecting block 3 is pushed by the inclined surface of the inclined locking block 603 to move. The inclined locking block 603 pushes the sliding rod 602 to move and compresses the corresponding first return spring 605. When the locking hole on the connecting block 3 moves below the inclined locking block 603, under the elastic reset of the first return spring 605, the inclined locking block 603 is pushed into the corresponding locking hole to lock and fix the connecting straight pipe 2, improving the connection efficiency. At the same time, one end of the connecting straight pipe 2 slides into the limiting groove 9, and the outer wall of the connecting straight pipe 2 squeezes the three main sealing rings 11. The elastic deformation of the main sealing ring 11 fills the gap, thereby achieving the main seal. During the insertion process, the outer wall of the connecting straight pipe 2 also pushes the push ring 801, causing it to move the two auxiliary sealing rings 802 and compress multiple second return springs 803. Under the elastic force of the second return springs 803, the auxiliary sealing rings 802 on the inner wall of the push ring 801 are tightly attached to the outer wall of the connecting straight pipe 2, while the auxiliary sealing rings 802 on the outer wall are tightly attached to the inner wall of the sliding groove 7, thereby forming an auxiliary seal. When the outer diameter of the tee fitting body 1 or the connecting straight pipe 2 changes due to thermal expansion and contraction and causes leakage, the auxiliary sealing assembly 8 can provide a secondary seal, effectively improving the sealing reliability and preventing leakage.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof tee pipe fitting connector, comprising a tee pipe fitting body (1) and three connecting straight pipes (2), characterized in that: The three ends of the tee fitting body (1) are fixedly connected with plug tubes (4). Each plug tube (4) has two connecting grooves (5) on one side. Each plug tube (4) has two snap-fit ​​structures (6) symmetrically arranged. Each plug tube (4) has a sliding groove (7) inside. Each sliding groove (7) has an auxiliary sealing component (8) inside. The auxiliary sealing assembly (8) includes a push ring (801) slidably connected to the inner wall of the sliding groove (7). The inner and outer walls of the push ring (801) are provided with first sealing grooves, and an auxiliary sealing ring (802) is snapped into each of the first sealing grooves.

2. The leak-proof tee pipe fitting connector according to claim 1, characterized in that: Multiple second return springs (803) are fixedly connected to one side of the inner side of the sliding groove (7). The other end of each second return spring (803) is fixedly connected to one side of the push ring (801). Each second return spring (803) is made of stainless steel.

3. The leak-proof tee pipe fitting connection joint according to claim 1, characterized in that: Two connecting blocks (3) are symmetrically fixedly connected to the outer wall of each connecting straight pipe (2). Each connecting block (3) has a snap-fit ​​hole on one side, and each connecting block (3) is adapted to the corresponding connecting groove (5).

4. The leak-proof tee pipe fitting connector according to claim 1, characterized in that: The three pipe fitting body (1) has three limiting grooves (9) on the inner wall of each pipe, and each limiting groove (9) has three second sealing grooves (10) on the inner wall, and each second sealing groove (10) has a main sealing ring (11) snapped into it.

5. A leak-proof tee pipe fitting connection joint according to claim 1, characterized in that: The snap-fit ​​structure (6) includes a fixed frame (601) fixedly connected to the outer wall of the insertion tube (4). A sliding rod (602) is slidably connected through one side of the fixed frame (601). A fork (604) is rotatably connected to one end of the sliding rod (602). One side of the fork (604) is in contact with the outer side of the fixed frame (601).

6. A leak-proof tee pipe fitting connection joint according to claim 5, characterized in that: The other end of the sliding rod (602) is fixedly connected to a beveled snap-fit ​​block (603), which is slidably connected to the outer wall of the insertion tube (4) and is adapted to the corresponding snap-fit ​​hole.

7. A leakproof type of tee fitting connection joint as per claim 6, wherein: A first return spring (605) is sleeved on the sliding rod (602). One end of the first return spring (605) is fixedly connected to one side of the inside of the fixed frame (601), and the other end is fixedly connected to one side of the inclined snap block (603).

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