Stainless steel tee

Abstract

The utility model belongs to the technical field of tee pipe fittings, concretely is a kind of stainless steel tee pipe fittings, including left and right side symmetrical distribution's half pipe fitting and top side's top pipe fitting, the bottom fixedly connected with half thread column of half pipe fitting, and the bottom screw nut is threadedly connected between two groups of corresponding half thread column, the top of half pipe fitting is integrally connected with half inner conical sleeve, the top of half inner conical sleeve is integrally connected with half connecting sleeve, the outer surface of half connecting sleeve is provided with first half thread part, top sleeve pipe is arranged between two groups of first half thread part, annular recess cavity is opened in the inner bottom of top sleeve pipe, connecting thread part is arranged in the inside of annular recess cavity, connecting thread part is threadedly connected with two groups of first half thread part, split structure can quickly separate half pipe fitting and top sleeve pipe, it is convenient for the cleaning of internal cavity, while damaging can be targeted to replace single component, need not overall replacement, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of tee fittings, specifically a stainless steel tee fitting. Background Technology

[0002] Pipelines are one of the most commonly used components in transportation equipment. They are generally used to transport liquids or gases, such as water pipelines, oil pipelines, and pipelines for transporting various liquid chemical materials. Tees are commonly used components for changing the direction of fluid flow. They have three openings and are commonly made by casting, welding, and hot extrusion forming.

[0003] A patent for an easy-to-clean assembled tee fitting (patent application number: CN 201920565917.4) discloses an easy-to-clean assembled tee fitting. This easy-to-clean assembled tee fitting disassembles the entire pipe into interconnectable parts, which is convenient for disassembling each part for cleaning. However, the flange connection requires the use of a lot of screws, which are tightened one by one during assembly, making the operation cumbersome. Especially when using a large number of tee fittings, the efficiency needs to be improved. Therefore, we propose a stainless steel tee fitting. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a stainless steel tee fitting, which solves the problems mentioned below.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A stainless steel tee fitting includes half-pipe fittings symmetrically distributed on the left and right sides and a top pipe fitting on the top side. The bottom of each half-pipe fitting is fixedly connected to a semi-threaded post, and a bottom tightening nut is threaded between two sets of corresponding semi-threaded posts. The top of the semi-pipe is integrally connected to a semi-inner conical sleeve, and the top of the semi-inner conical sleeve is integrally connected to a semi-connecting sleeve. The outer surface of the semi-connecting sleeve is provided with a first semi-threaded portion, and a top sleeve is provided between the two sets of first semi-threaded portions. An annular groove cavity is opened at the bottom of the top sleeve, and a connecting thread portion is provided inside the annular groove cavity. The connecting thread portion is threadedly connected to the two sets of first semi-threaded portions.

[0006] Preferably, the top of the semi-pipe is provided with a second semi-threaded portion, and a top tightening nut is threadedly connected between the two sets of second semi-threaded portions.

[0007] Preferably, a first sealing groove is provided at the connection of the semi-pipe fitting, and a second annular sealing groove is provided at the top of the semi-pipe fitting. The first sealing groove and the second sealing groove are connected, and a sealing element is provided between the two sets of semi-pipe fittings.

[0008] Preferably, the sealing element consists of a top annular sealing ring and a bottom sealing connection edge, the annular sealing ring and the sealing connection edge are integrally connected, the annular sealing ring is adapted to the second sealing groove, and the sealing connection edge is adapted to the first sealing groove.

[0009] Preferably, the bottom of the top sleeve is integrally connected with a pressing ring edge, which abuts against the annular sealing ring.

[0010] Preferably, a rubber sealing ring is fitted to the inner top of the annular groove cavity, and the top of the semi-connecting sleeve abuts against the rubber sealing ring.

[0011] Preferably, the semi-pipe fitting, the semi-inner conical sleeve, the semi-connecting sleeve, and the top sleeve are all made of stainless steel.

[0012] Preferably, the end of the semi-tube has a first clamping annular protrusion, and the end of the top sleeve has a second clamping annular protrusion.

[0013] Preferably, a first clamping sealing ring is fitted inside the first clamping annular protrusion, and a second clamping sealing ring is fitted inside the second clamping annular protrusion.

[0014] Preferably, the first compression sealing ring, the second compression sealing ring, the rubber sealing ring, and the sealing element are all made of nitrile rubber.

[0015] This utility model provides a stainless steel tee fitting. Compared with the prior art, it has the following advantages: 1. Efficient and convenient assembly, reducing operating costs: The structure adopts half-pipe splicing, double tightening nut fixing, and top sleeve thread connection, eliminating the need for a large number of bolts and screws to be tightened one by one. Compared with traditional flange connection, it reduces assembly steps and improves installation efficiency, making it especially suitable for batch laying scenarios with a large number of pipes.

[0016] 2. Multiple sealing design for excellent leak prevention performance: The sealing connection edge of the sealing element is matched with the first sealing groove, the annular sealing ring is matched with the second sealing groove, and the sealing is achieved by pressing the edge of the sealing ring, sealing the end face of the rubber sealing ring, and sealing the interface with the clamping sealing ring, forming a multi-layer leak prevention barrier to effectively block the fluid leakage path.

[0017] 3. Strong material adaptability and long service life: The main structure is made of stainless steel, which is corrosion resistant and has high strength, making it suitable for various fluid transportation scenarios; the sealing components have good wear resistance, high and low temperature resistance and compression deformation performance, improving the overall durability of the pipe fittings.

[0018] 4. Flexible disassembly and assembly, convenient maintenance and cleaning: The detachable structure allows for quick separation of the half-pipe and the top sleeve, facilitating the cleaning of the internal cavity. In case of damage, individual parts can be replaced instead of the entire unit, reducing maintenance costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the main body disassembled structure of this utility model; Figure 4 This is a schematic diagram of the semi-pipe structure of this utility model; Figure 5 This is a schematic diagram of the sealing component structure of this utility model; Figure 6 This is a schematic diagram of the internal structure of the top sleeve of this utility model; Figure 7 For the present utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Half-pipe fitting; 2. Top sleeve; 3. Bottom tightening nut; 4. Top tightening nut; 5. First clamping annular protrusion; 6. First clamping sealing ring; 7. Second clamping annular protrusion; 8. Second clamping sealing ring; 9. Half-threaded post; 10. Rubber sealing ring; 11. Sealing element; 12. Annular sealing ring; 13. Sealing connection edge; 14. Second half-threaded part; 15. Second sealing groove; 16. First half-threaded part; 17. Half-connecting sleeve; 18. Half-inner conical sleeve; 19. First sealing groove; 20. Pressing ring edge; 21. Connecting threaded part; 22. Annular groove cavity. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-7 This utility model provides a technical solution: a stainless steel tee fitting, including half-pipe fittings 1 symmetrically distributed on the left and right sides and a top pipe fitting 2 on the top side, with a half-threaded post 9 fixedly connected to the bottom of the half-pipe fitting 1, and a bottom tightening nut 3 threadedly screwed between two sets of corresponding half-threaded posts 9. The top of the semi-pipe fitting 1 is integrally connected with a semi-inner conical sleeve 18, and the top of the semi-inner conical sleeve 18 is integrally connected with a semi-connecting sleeve 17. The outer surface of the semi-connecting sleeve 17 is provided with a first semi-threaded part 16. A top sleeve 2 is provided between the two sets of first semi-threaded parts 16. An annular groove cavity 22 is opened at the bottom of the top sleeve 2. A connecting threaded part 21 is provided inside the annular groove cavity 22. The connecting threaded part 21 is threadedly connected to the two sets of first semi-threaded parts 16.

[0023] The top of the semi-pipe fitting 1 is provided with a second semi-threaded part 14, and a top tightening nut 4 is threaded between the two sets of second semi-threaded parts 14 to improve the tightness of the two sets of semi-pipe fittings 1 after installation.

[0024] A first sealing groove 19 is provided at the connection of the half-pipe 1, and a second annular sealing groove 15 is provided at the top of the half-pipe 1. The first sealing groove 19 and the second sealing groove 15 are connected, and a sealing element 11 is provided between the two sets of half-pipe 1.

[0025] The sealing element 11 consists of a top annular sealing ring 12 and a bottom sealing connection edge 13. The annular sealing ring 12 and the sealing connection edge 13 are integrally connected. The annular sealing ring 12 is adapted to the second sealing groove 15, and the sealing connection edge 13 is adapted to the first sealing groove 19. The two sets of half-pipe fittings 1 can be connected and installed together and sealed through the sealing element 11.

[0026] The bottom of the top sleeve 2 is integrally connected with a pressure ring edge 20, which abuts against the annular sealing ring 12. The pressure ring edge 20 abuts against the annular sealing ring 12, which can improve the sealing performance of the top sleeve 2 after installation.

[0027] A rubber sealing ring 10 is fitted to the top of the annular groove cavity 22, and the top of the semi-connecting sleeve 17 abuts against the rubber sealing ring 10, which can improve the sealing performance of this tee fitting.

[0028] The semi-pipe fitting 1, the semi-inner conical sleeve 18, the semi-connecting sleeve 17, and the top sleeve 2 are all made of stainless steel.

[0029] The end of the semi-pipe fitting 1 has a first clamping annular protrusion 5, and the end of the top sleeve 2 has a second clamping annular protrusion 7. The first clamping annular protrusion 5 is fitted with a first clamping sealing ring 6, and the second clamping annular protrusion 7 is fitted with a second clamping sealing ring 8, which facilitates the press-fitting of the tee fitting into the connecting pipe.

[0030] The first compression sealing ring 6, the second compression sealing ring 8, the rubber sealing ring 10, and the sealing element 11 are all made of nitrile rubber. Nitrile rubber has good compression set, heat resistance, and low temperature resistance, and has high wear resistance. It can be used to manufacture sealing products for use under harsh conditions.

[0031] Working principle: The left and right symmetrical half-pipes 1 are connected by the bottom half-threaded posts 9. The bottom tightening nut 3 is screwed between the two sets of half-threaded posts 9 to complete the bottom fixation of the half-pipe 1. At the same time, the second half-threaded part 14 at the top of the half-pipe 1 is connected to form a complete thread. The top tightening nut 4 is screwed between the two sets of second half-threaded parts 14 to achieve double fixation of the half-pipe 1 from top to bottom, ensuring the horizontal channel splicing is stable. After the semi-connecting sleeve 17 of the top integrated connection of the semi-pipe fitting 1 is connected, the first semi-threaded part 16 on its outer surface forms a complete thread; the top sleeve 2 is put on the outside of the two sets of semi-connecting sleeves 17, so that the connecting thread 21 in the bottom annular groove cavity 22 of the top sleeve 2 is threadedly connected to the first semi-threaded part 16, thus completing the fixation of the top sleeve 2 and finally forming a tee structure.

[0032] ① Sealing at the joint of the half-pipe fitting (1): When the two sets of half-pipe fittings 1 are joined together, the sealing element 11 is embedded in the joint. The sealing connection edge 13 at the bottom of the sealing element (11) is adapted to the first sealing groove 19 embedded in the half-pipe fitting 1, and the annular sealing ring 12 at the top of the sealing element 11 is adapted to the second sealing groove 15 embedded in the top of the half-pipe fitting 1. At the same time, the pressing ring edge 20 of the bottom integrated connection of the top sleeve 2 abuts against the annular sealing ring (12), and the sealing effect is enhanced by compression, blocking the leakage path at the joint of the horizontal channel.

[0033] ② Sealing at the connection between the top sleeve 2 and the half-connecting sleeve 17: A rubber sealing ring 10 is fitted at the top of the annular groove cavity 22 of the top sleeve 2. When the top sleeve 2 and the half-connecting sleeve 17 are threaded together, the top of the half-connecting sleeve 17 is tightly abutted against the rubber sealing ring 10. This ensures the tightness of the threaded connection and prevents fluid leakage from the connection.

[0034] ③ External pipe interface sealing: The end of the half-pipe fitting 1 has a first clamping annular protrusion 5, which is fitted with a first clamping sealing ring 6; the end of the top sleeve 2 has a second clamping annular protrusion 7, which is fitted with a second clamping sealing ring 8. When the tee fitting is connected to the external pipe, the first clamping annular protrusion 5 and the second clamping annular protrusion 7 form a seal with the external pipe through the first clamping sealing ring 6 and the second clamping sealing ring 8, respectively, to prevent fluid leakage from the external interface.

[0035] After splicing and sealing, the left and right half-pipes 1 are combined to form a horizontal fluid channel, and the top sleeve 2 forms a vertical fluid channel. The two are connected at the junction of the half-pipe 1 and the half-connecting sleeve 17 to form a complete tee flow channel. Fluid can flow in from any channel, change its flow direction after passing through the internal cavity of the tee, and flow out from the target channel. Throughout the process, the coordinated action of the sealing element 11, rubber sealing ring 10, first clamping sealing ring 6, second clamping sealing ring 8 and other marked components ensures no leakage.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stainless steel tee fitting, comprising symmetrically distributed half-pipe fittings (1) on the left and right sides and a top pipe fitting (2) on the top side, characterized in that: The bottom of the semi-pipe (1) is fixedly connected to a semi-threaded column (9), and a bottom tightening nut (3) is threaded between two sets of corresponding semi-threaded columns (9). The top of the semi-pipe fitting (1) is integrally connected to a semi-inner conical sleeve (18), and the top of the semi-inner conical sleeve (18) is integrally connected to a semi-connecting sleeve (17). The outer surface of the semi-connecting sleeve (17) is provided with a first semi-threaded part (16), and a top sleeve (2) is provided between the two sets of first semi-threaded parts (16). The bottom of the top sleeve (2) is provided with an annular groove cavity (22), and the interior of the annular groove cavity (22) is provided with a connecting threaded part (21). The connecting threaded part (21) is threadedly connected to the two sets of first semi-threaded parts (16).

2. A stainless steel tee fitting according to claim 1, characterized in that: The top of the semi-pipe (1) is provided with a second semi-threaded part (14), and a top tightening nut (4) is threaded between the two sets of second semi-threaded parts (14).

3. A stainless steel tee fitting according to claim 2, characterized in that: The connection of the half-pipe (1) is provided with a first sealing groove (19), and the top of the half-pipe (1) is provided with an annular second sealing groove (15). The first sealing groove (19) and the second sealing groove (15) are connected, and a sealing element (11) is provided between the two sets of half-pipes (1).

4. A stainless steel tee fitting according to claim 3, characterized in that: The sealing element (11) consists of a top annular sealing ring (12) and a bottom sealing connection edge (13). The annular sealing ring (12) and the sealing connection edge (13) are integrally connected. The annular sealing ring (12) is adapted to the second sealing groove (15), and the sealing connection edge (13) is adapted to the first sealing groove (19).

5. A stainless steel tee fitting according to claim 4, characterized in that: The bottom of the top sleeve (2) is integrally connected with a pressing ring edge (20), which abuts against the annular sealing ring (12).

6. A stainless steel tee fitting according to claim 5, characterized in that: The inner top of the annular groove cavity (22) is fitted with a rubber sealing ring (10), and the top of the semi-connecting sleeve (17) abuts against the rubber sealing ring (10).

7. A stainless steel tee fitting according to claim 6, characterized in that: The semi-pipe (1), semi-inner conical sleeve (18), semi-connecting sleeve (17) and top sleeve (2) are all made of stainless steel.

8. A stainless steel tee fitting according to claim 7, characterized in that: The end of the semi-pipe (1) is formed with a first clamping annular protrusion (5), and the end of the top sleeve (2) is formed with a second clamping annular protrusion (7).

9. A stainless steel tee fitting according to claim 8, characterized in that: The first pressing annular protrusion (5) is equipped with a first pressing sealing ring (6), and the second pressing annular protrusion (7) is equipped with a second pressing sealing ring (8).

10. A stainless steel tee fitting according to claim 9, characterized in that: The first compression sealing ring (6), the second compression sealing ring (8), the rubber sealing ring (10), and the sealing element (11) are all made of nitrile rubber.

Images