Stainless steel pipeline connecting structure

Abstract

The utility model discloses a stainless steel pipeline connecting structure which comprises two stainless steel pipes, a sleeve is arranged between the two stainless steel pipes, an internal thread pipe is fixedly arranged in the sleeve, and external threads are arranged on the outer sides of the opposite ends of the two stainless steel pipes. The stainless steel pipes are inserted into the two ends in the inner threaded pipe in a threaded mode respectively, stainless steel insertion pipes are arranged on the opposite sides of the two stainless steel pipes, the two ends of each stainless steel insertion pipe are inserted into the two stainless steel pipes respectively, and the outer sides of the two ends of each stainless steel insertion pipe are symmetrically and fixedly sleeved with sealing rings. According to the stainless steel pipeline threaded connection structure, the problems that an existing stainless steel pipeline threaded connection structure is not good in sealing effect and poor in firmness and stability are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipelines, in particular to a stainless steel pipeline connection structure. Background Art

[0002] Stainless steel pipe is a hollow long round steel material, which is widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural parts. In addition, when the bending and torsional strengths are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also commonly used in furniture and kitchen utensils.

[0003] When installing stainless steel, a connecting structure is required to connect two groups of stainless steel pipes. However, the existing stainless steel pipe threaded connection structure has a poor sealing effect and poor firmness and stability. Therefore, the utility model proposes a stainless steel pipe connection structure to solve the above problems. Utility Model Content

[0004] In view of the defects of the above-mentioned prior art, the purpose of the utility model is to provide a stainless steel pipe connection structure.

[0005] To achieve the above-mentioned purpose, the utility model provides a stainless steel pipe connection structure, including two stainless steel pipes, a sleeve is arranged between the two stainless steel pipes, an internal threaded pipe is fixedly arranged in the sleeve, external threads are arranged on the outsides of the opposite ends of the two stainless steel pipes, the stainless steel pipes are respectively threadedly inserted at both ends of the internal threaded pipe, stainless steel inserts are arranged on the opposite sides of the two stainless steel pipes, the two ends of the stainless steel inserts are respectively inserted in the two stainless steel pipes, sealing rings are symmetrically fixed on the outsides of the two ends of the stainless steel inserts, and the thickness of the sealing ring located on the left side of the sleeve gradually increases from left to right.

[0006] Furthermore, the outer ends of the two stainless steel pipes are wrapped with raw tape.

[0007] Furthermore, the outer fixing sleeve of the stainless steel tube is provided with a positioning block, and the positioning block is located on the outer side of the sleeve.

[0008] Furthermore, a positioning screw is provided on the outer side of the positioning block, the positioning screw is threadably matched with the positioning block, a positioning screw hole is provided on the outer wall of the sleeve, and the positioning block is fixed by screwing the positioning screw into the positioning screw hole.

[0009] Furthermore, a transverse groove is provided on the outer wall of the sleeve, an electric push rod is fixedly arranged in the transverse groove, a stop block is fixedly connected to the telescopic end of the electric push rod, and the stop block is pressed against the outer wall of the positioning screw.

[0010] Furthermore, a pressure sensing sheet is fixedly provided on the inner wall of the stop block, the pressure sensing sheet is electrically connected to a pressure controller, and the pressure controller is electrically connected to the electric push rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. Through the structures such as the sleeve, stainless steel insert, sealing ring and raw tape, the outer sides of the opposite ends of the two stainless steel pipes are provided with external threads, and sealing rings are symmetrically fixedly sleeved on the outer sides of the two ends of the stainless steel insert. In the process of continuously inserting the stainless steel pipe into the internal threaded pipe, the stainless steel insert is gradually inserted into the stainless steel pipe. As the thickness of the sealing ring gradually becomes thicker, the stainless steel insert can be tightly sealed and inserted into the stainless steel pipe. The raw tape improves the sealing performance of the connection between the stainless steel pipe and the internal threaded pipe, thereby improving the sealing effect of the connection between the two stainless steel pipes, and solves the problem that the sealing effect of the existing stainless steel pipe threaded connection structure is not very good;

[0013] 2. Through the positioning screw and positioning block and other structures, the stainless steel insert is tightly inserted into the stainless steel pipe, and the positioning block is screwed into the positioning screw hole through the positioning screw to fix it. The positioning screw is an external hexagonal screw. When the positioning screw is tightened, the electric push rod is started to contract to drive the block to move. The pressure sensing piece senses the pressure. When the pressure sensing piece reaches a certain value, the pressure controller controls the electric push rod to stop extending and retracting, so that the block is against the outer wall of the positioning screw to prevent the positioning screw from loosening during use, thereby improving the overall firmness and stability, and solving the problem of poor firmness and stability of the existing stainless steel pipe threaded connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments of the utility model. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is the front view provided by the utility model;

[0016] Figure 2 It is a cross-sectional view provided by the utility model;

[0017] Figure 3 This is a front view of the sealing ring provided by the utility model;

[0018] Figure 4 It is an enlarged schematic diagram of part A provided by the utility model;

[0019] Description of reference numerals:

[0020] 1. Stainless steel pipe; 2. Casing; 3. Horizontal groove; 4. Electric push rod; 5. Stop block; 6. Positioning screw; 7. Positioning block; 8. Pressure sensing sheet; 9. Positioning screw hole; 10. Internally threaded pipe; 11. Raw material tape; 12. Sealing ring; 13. Stainless steel insert; 14. External thread. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order.

[0023] See also Figure 1-4 A stainless steel pipe connection structure comprises a stainless steel pipe 1, two stainless steel pipes 1 are provided, a sleeve 2 is provided between the two stainless steel pipes 1, an internal threaded pipe 10 is fixedly provided in the sleeve 2, external threads 14 are provided on the outer sides of the opposite ends of the two stainless steel pipes 1, stainless steel pipes 1 are respectively threadedly inserted at both ends of the internal threaded pipe 10, the two ends of the stainless steel insert pipe 13 are respectively inserted in the two stainless steel pipes 1, the two stainless steel insert pipes 13 are inserted in the stainless steel insert pipe 13, sealing rings 12 are symmetrically fixedly provided on the outer sides of the two ends of the stainless steel insert pipe 13, the thickness of the sealing ring 12 on the left side of the sleeve 2 gradually increases from left to right, a raw tape 11 is wound around the outer ends of the two stainless steel pipes 1, and the sleeve 2 and the stainless steel insert pipe 13 are provided. The structure of the pipe 13, the sealing ring 12 and the raw material tape 11, the outer sides of the opposite ends of the two stainless steel pipes 1 are both provided with external threads 14, and the sealing rings 12 are symmetrically fixedly sleeved on the outer sides of the two ends of the stainless steel insert pipe 13. In the process of continuously inserting the stainless steel pipe 1 into the internal threaded pipe 10, the stainless steel insert pipe 13 is gradually inserted into the stainless steel pipe 1. As the thickness of the sealing ring 12 gradually becomes thicker, the stainless steel insert pipe 13 can be tightly sealed and inserted into the stainless steel pipe 1. The raw material tape 11 is provided to improve the sealing performance of the connection between the stainless steel pipe 1 and the internal threaded pipe 10, thereby improving the sealing effect of the connection between the two stainless steel pipes, and solving the problem that the sealing effect of the existing stainless steel pipe threaded connection structure is not very good;

[0024] As an improvement of the above technical solution, a positioning block 7 is fixedly sleeved on the outer side of the stainless steel pipe 1. The positioning block 7 is located on the outer side of the sleeve 2. A positioning screw 6 is arranged on the outer side of the positioning block 7. The positioning screw 6 is threadedly matched with the positioning block 7. A positioning screw hole 9 is arranged on the outer wall of the sleeve 2. The positioning block 7 is fixed in the positioning screw hole 9 through the positioning screw 6. A transverse groove 3 is opened on the outer wall of the sleeve 2. An electric push rod 4 is fixedly arranged in the transverse groove 3. A push block 5 is fixedly connected to the telescopic end of the electric push rod 4. The push block 5 pushes against the outer wall of the positioning screw 6. A pressure sensing sheet 8 is fixedly arranged on the inner wall of the push block 5. The pressure sensing sheet 8 is electrically connected to the pressure controller, and the pressure controller is electrically connected to the electric push rod 4. Through the set positioning screw 6 and positioning block 7 and other structures, the stainless steel insert 13 is tightly inserted into the stainless steel pipe 1, and the positioning block 7 is then screwed into the positioning screw hole 9 through the positioning screw 6 to be fixed. The positioning screw 6 is an external hexagonal screw. When the positioning screw 6 is tightened, the electric push rod 4 is started to contract and drive the block 5 to move. The pressure sensing piece 8 senses the size of the pressure. When the pressure sensing piece 8 senses that the pressure reaches a certain value, the pressure controller controls the electric push rod 4 to stop extending and retracting, so that the block 5 is against the outer wall of the positioning screw 6 to prevent the positioning screw 6 from loosening during use, thereby improving the overall firmness and stability, and solving the problem of poor firmness and stability of the existing stainless steel pipe threaded connection structure.

[0025] Working principle and usage of the utility model:

[0026] When in use, the outer sides of the opposite ends of the two stainless steel pipes 1 are both provided with external threads 14, and sealing rings 12 are symmetrically fixedly sleeved on the outer sides of the two ends of the stainless steel insert 13. In the process of continuously inserting the stainless steel pipe 1 into the internal threaded pipe 10, the stainless steel insert 13 is gradually inserted into the stainless steel pipe 1. As the thickness of the sealing ring 12 gradually becomes thicker, the stainless steel insert 13 can be tightly sealed and inserted into the stainless steel pipe 1. The raw tape 11 provided improves the sealing performance of the connection between the stainless steel pipe 1 and the internal threaded pipe 10, thereby improving the sealing performance between the two stainless steel pipes. The sealing effect of the connection, after the stainless steel insert 13 is tightly inserted into the stainless steel tube 1, the positioning block 7 is screwed into the positioning screw hole 9 through the positioning screw 6 and fixed. The positioning screw 6 is an external hexagonal screw. When the positioning screw 6 is tightened, the electric push rod 4 is started to contract to drive the block 5 to move, and the pressure sensing piece 8 senses the size of the pressure. When the pressure sensing piece 8 senses that the pressure reaches a certain value, the pressure controller controls the electric push rod 4 to stop extending and retracting, so that the block 5 is against the outer wall of the positioning screw 6 to prevent the positioning screw 6 from loosening during use, thereby improving the overall firmness and stability.

[0027] The above description is only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the utility model, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A stainless steel pipe connection structure, characterized in that: The invention comprises a stainless steel pipe (1), wherein two stainless steel pipes (1) are provided, a sleeve (2) is provided between the two stainless steel pipes (1), an internally threaded pipe (10) is fixedly provided inside the sleeve (2), external threads (14) are provided on the outer sides of the opposite ends of the two stainless steel pipes (1), the stainless steel pipes (1) are respectively threadedly inserted into the two ends of the internally threaded pipe (10), stainless steel inserts (13) are provided on the opposite sides of the two stainless steel pipes (1), the two ends of the stainless steel inserts (13) are respectively inserted into the two stainless steel pipes (1), sealing rings (12) are symmetrically fixedly provided on the outer sides of the two ends of the stainless steel inserts (13), and the thickness of the sealing ring (12) on the left side inside the sleeve (2) gradually increases from left to right.

2. A stainless steel pipe connection structure according to claim 1, characterized in that: The outer ends of the two stainless steel pipes (1) are wound with a raw material tape (11).

3. A stainless steel pipe connection structure according to claim 2, characterized in that: The outer fixed sleeve of the stainless steel pipe (1) is provided with a positioning block (7), and the positioning block (7) is located on the outer side of the sleeve (2).

4. A stainless steel pipe connection structure according to claim 3, characterized in that: A positioning screw (6) is arranged on the outer side of the positioning block (7), and the positioning screw (6) is threadedly matched with the positioning block (7). A positioning screw hole (9) is arranged on the outer wall of the sleeve (2), and the positioning block (7) is fixed by screwing the positioning screw (6) into the positioning screw hole (9).

5. A stainless steel pipe connection structure according to claim 4, characterized in that: The outer wall of the sleeve (2) is provided with a transverse groove (3), an electric push rod (4) is fixedly arranged in the transverse groove (3), and a stop block (5) is fixedly connected to the telescopic end of the electric push rod (4), and the stop block (5) is pressed against the outer wall of the positioning screw (6).

6. A stainless steel pipe connection structure according to claim 5, characterized in that: A pressure sensing sheet (8) is fixedly provided on the inner wall of the stop block (5); the pressure sensing sheet (8) is electrically connected to a pressure controller, and the pressure controller is electrically connected to an electric push rod (4).

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