High-cleanliness stainless steel seamless pipe fitting

Abstract

The invention relates to the technical field of high-cleanliness stainless steel pipes, in particular to a high-cleanliness stainless steel seamless pipe fitting which comprises a first butt joint pipe, a second butt joint pipe and a cleaning mechanism, the first butt joint pipe is connected to the upper portion of the second butt joint pipe, and seamless butt joint is achieved through a metal clamp; the cleaning mechanism comprises a liner tube arranged in the second butt joint tube, the upper end of the liner tube is provided with a fixing part which is flanged towards the peripheral direction, and the lower end of the liner tube is upwards provided with an assembly cavity and a tube opening butt joint structure, so that the germicidal lamp is in the assembly cavity and is controlled towards the outside of the assembly cavity, operation is convenient, and the service life of the germicidal lamp is prolonged. In the operation process, the liner tube is always sealed in the tube cavity, and the germicidal lamp is always kept in the tube cavity through the liner tube, so that bacteria cannot enter the tube cavity, bacteria outside the tube are prevented from entering the tube cavity and causing new pollution to the tube cavity during sterilization operation, and the tube is suitable for a high-cleanliness pipeline conveying scene.

Description

Technical Field

[0001] The invention relates to the technical field of high-cleanliness stainless steel pipes, in particular to a high-cleanliness stainless steel seamless pipe fitting. Background Art

[0002] High-cleanliness stainless steel pipe is a kind of steel pipe specially designed for high-purity fluid transportation. It is widely used in industries with extremely high requirements for cleanliness. For example, it is often used for liquid medicine transportation in the manufacturing industry, often used for dairy product transportation in the food industry, used for the transportation of cell fluid and fermentation liquid in bioengineering, and used for the transportation of high-purity chemicals and gases in the photovoltaic industry.

[0003] High-cleanliness stainless steel pipes have high installation requirements. The docking method of multi-section high-cleanliness stainless steel pipes is mostly clamp connection. The clamp connection has high requirements for sealing. Frequent removal of pipe fittings to clean the cavity wall is not only cumbersome, but also breeds new bacteria in the pipeline. Therefore, ensuring the cleanliness of the cavity wall of the high-cleanliness pipeline in a non-disassembled state is a problem that needs to be solved at present. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a high-cleanliness stainless steel seamless pipe fitting, including a first butt joint, a second butt joint and a clean mechanism, the first butt joint is connected above the second butt joint and is seamlessly butted through a metal clamp, the clean mechanism includes a liner tube arranged in the second butt joint, the upper end of the liner tube is provided with a fixing portion flanged in the circumferential direction, the fixing portion is butted between the pipe openings of the second butt joint and the first butt joint and is further fixed by the metal clamp, an assembly cavity is opened upward from the lower end of the liner tube, the clean mechanism also includes a germicidal lamp arranged in the assembly cavity, one end of the lamp body is connected upward to the bottom of the assembly cavity, a compression plate is provided in the assembly cavity, the compression plate is located at the lower end of the germicidal lamp, a pulling hole is opened between the fixing portion and the bottom of the assembly cavity, the clean mechanism also includes a sterilization lamp arranged in the assembly cavity The stainless steel wire in the cavity, the top end of the stainless steel wire passes through the pulling hole upward to reach the top of the fixing part and is connected to the bottom end of the first butt joint tube, and the bottom end of the stainless steel wire is downwardly connected to the compression plate. When the tube mouth of the first butt joint tube rotates clockwise relative to the tube mouth of the second butt joint tube, the stainless steel wire is tightened upward, and the compression plate is dragged upward by tightening upward, and the compression plate is pushed by the compression plate to rise along the assembly cavity, so that the germicidal lamp is compressed in the assembly cavity and isolated from the tube cavity of the second butt joint tube; conversely, when the tube mouth of the first butt joint tube rotates counterclockwise relative to the tube mouth of the second butt joint tube, the stainless steel wire is relaxed downward, and the compression plate is lowered along the assembly cavity by relaxing downward, and the germicidal lamp is exposed from the bottom of the lower end of the liner tube in the tube cavity of the second butt joint tube, so that the tube cavity of the second butt joint tube is automatically sterilized.

[0005] Further preferably, the upper end of the assembly cavity is close to the fixing portion, and the lower end of the liner tube extends to the middle of the cavity of the second butt joint tube.

[0006] Further preferably, the germicidal lamp consists of a lamp body with a flexible outer layer and a UV-C ultraviolet lamp wick arranged in the lamp body, the lamp body is spiral-shaped, and the lamp body is elastically compressed in the assembly cavity when the compression plate rises.

[0007] Further preferably, a smooth rounded surface is provided at the transition between the upper end of the liner and the fixing portion, the rounded surface smoothly transitions with the cavity wall of the liner, and the first butt joint, the second butt joint and the cavity wall of the liner are polished, and the smoothness level is consistent with that of the rounded surface.

[0008] Further preferably, the lower end of the liner is flat, and the lower end of the second butt joint is provided with a curved portion, and the curved portion continues to slope downward.

[0009] Further preferably, a plane is provided at the upper end of the fixing portion, and a sealing groove is opened downward from the top of the plane, a sealing ring is fixed at the bottom of the lower end pipe opening of the first butt joint pipe, the sealing ring is located in the sealing groove, so that the pipe openings of the first butt joint pipe and the second butt joint pipe are sealed, a protrusion is provided on the bottom surface of the sealing ring, the upper end of the pulling hole is communicated with the sealing groove, the upper end of the stainless steel wire enters the sealing groove, and a hanging ring is provided, the protrusion follows the sealing ring to extend into the sealing groove and is inserted into the hanging ring, the stainless steel wires are distributed at two locations at equal angles, and each of the stainless steel wires is provided with a hanging ring at the upper end, the pulling holes are at two locations at equal angles, and each of the stainless steel wires passes through one of the pulling holes and enters the sealing groove, the protrusions are at two locations at equal angles, and are provided on the bottom surface of the sealing ring, and each of the protrusions is inserted into one of the hanging rings.

[0010] Further preferably, the upper end of the pulling hole is provided with a rounded corner, and the rounded corner is smoothly transitioned to the pulling hole.

[0011] Further preferably, the lumen of the liner tube is a tapered cavity that gradually becomes thinner toward the bottom end, and the lamp body is a tapered spiral tube that gradually becomes thicker toward the bottom end.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Each section of the pipe fitting is formed by docking a first pair of pipes and a second pair of pipes distributed up and down, and the docking is connected by a clamp, wherein a liner is arranged in the second pair of pipes, and a sterilizing lamp capable of telescopic movement is arranged in the liner. When the first pair of pipes and the second pair of pipes are in normal use, the first pair of pipes is rotated clockwise relative to the second pair of pipes. When the rotation is blocked, it proves that the first pair of pipes does not need to be rotated relative to the second pair of pipes. At this time, the metal clamp is locked, and the first pair of pipes and the second pair of pipes are tightly clamped by the metal clamp. The two pipes are docked. While the two pipes are docked, the sterilizing lamp can be controlled to be compressed in the assembly cavity of the liner. When the stainless steel pipe fitting is connected to a practical pipeline for use, the medium will not flow onto the sterilizing lamp, and will not affect the sterilizing lamp. At this time, the bottom end of the sterilizing lamp is covered by the compression plate in the assembly cavity. When the tube cavity needs to be purified, the metal clamp is loosened to allow the first tube to rotate counterclockwise relative to the second tube. During operation, the tube mouth of the first tube is ensured to be always connected with the tube mouth of the second tube. The tube mouth of the first tube drives the sealing ring to rotate in the opposite direction, the sealing ring drives the protrusion to rotate in the opposite direction, and the protrusion drives the hanging ring to rotate in the opposite direction. The tension on the hanging ring disappears, the stainless steel wire changes from being tightened to being relaxed, the compression plate descends along the assembly cavity, and the lamp body is released downward in length under the action of the spiral. At this time, the germicidal lamp is exposed from the bottom of the lower end of the liner into the tube cavity of the second tube, so that the tube cavity of the second tube is sterilized.

[0014] This pipe mouth docking structure makes it easy to operate the germicidal lamp in and outside the assembly cavity. During operation, the liner is always closed in the lumen, and the liner keeps the germicidal lamp in the lumen at all times, ensuring that bacteria do not enter the lumen. During the sterilization operation, bacteria outside the tube are prevented from entering the lumen and causing new contamination to the lumen. This is suitable for scenarios of high-cleanliness pipeline transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the external structure of a high-cleanliness stainless steel seamless pipe provided in an embodiment of the present invention;

[0016] Figure 2 A high-cleanliness stainless steel seamless pipe provided in the embodiment of the present invention is composed of Figure 1 A schematic diagram from another perspective;

[0017] Figure 3 A schematic diagram of a high-cleanliness stainless steel seamless pipe after being cut open provided by an embodiment of the present invention;

[0018] Figure 4 A high-cleanliness stainless steel seamless pipe provided in the embodiment of the present invention is composed of Figure 3 The enlarged schematic diagram of the A part is shown;

[0019] Figure 5 A high-cleanliness stainless steel seamless pipe provided in the embodiment of the present invention is composed of Figure 3 The derived plan view;

[0020] Figure 6 A schematic diagram of a high-cleanliness stainless steel seamless pipe provided by an embodiment of the present invention after only the second butt joint is cut open;

[0021] Figure 7 A schematic diagram of a high-cleanliness stainless steel seamless pipe provided by an embodiment of the present invention after only the liner is cut open;

[0022] Figure 8 A schematic diagram of only the first butt joint of a high-cleanliness stainless steel seamless pipe provided by an embodiment of the present invention from a bottom-up perspective;

[0023] Fig. 9 A schematic diagram of the structure of a lamp body in a high-cleanliness stainless steel seamless pipe provided in an embodiment of the present invention;

[0024] Fig.10 A schematic diagram of a spiral and conical shape of only a germicidal lamp in a high-cleanliness stainless steel seamless pipe provided in an embodiment of the present invention.

[0025] In the figure: 1. first butt joint; 2. second butt joint; 3. metal clamp; 4. clean mechanism; 5. liner; 6. fixing part; 7. assembly cavity; 8. germicidal lamp; 9. lamp body; 91. UV-C ultraviolet lamp wick; 10. compression plate; 11. pulling hole; 12. stainless steel wire; 13. bending part; 14. plane; 15. sealing groove; 16. sealing ring; 17. protrusion; 18. hanging ring; 19. fillet; 20. fillet surface. DETAILED DESCRIPTION

[0026] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0027] In one embodiment, Figure 1-Figure 10 As shown:

[0028] The present embodiment provides a high-cleanliness stainless steel seamless pipe fitting, including a first butt joint pipe 1, a second butt joint pipe 2 and a clean mechanism 4. The first butt joint pipe 1 is connected to the top of the second butt joint pipe 2 and seamlessly connected through a metal clamp 3. The clean mechanism 4 includes a liner 5 arranged in the second butt joint pipe 2. The upper end of the liner 5 is provided with a fixing portion 6 which is flanged in the circumferential direction. The fixing portion 6 is butt jointed between the pipe openings of the second butt joint pipe 2 and the first butt joint pipe 1 and is further fixed by the metal clamp 3. An assembly cavity 7 is opened upward from the lower end of the liner 5. The clean mechanism 4 also includes a sterilization lamp 8 arranged in the assembly cavity 7. One end of the lamp body 9 is connected upward to the bottom of the assembly cavity 7. A compression plate 10 is provided in the assembly cavity 7. The compression plate 10 is located at the lower end of the sterilization lamp 8. A pulling hole 11 is opened between the fixing portion 6 and the bottom of the assembly cavity 7. The clean mechanism 4 also includes a sterilization lamp 8 arranged in the assembly cavity 7. The stainless steel wire 12 inside, the top end of the stainless steel wire 12 passes through the pulling hole 11 upward to reach the top of the fixing part 6 and is connected to the bottom end of the first butt joint tube 1, and the bottom end of the stainless steel wire 12 is downwardly connected to the compression plate 10. When the tube mouth of the first butt joint tube 1 rotates clockwise relative to the tube mouth of the second butt joint tube 2, the stainless steel wire 12 is tightened upward, and the compression plate 10 is dragged upward by tightening upward, and the compression plate 10 is pushed by the compression plate 10 to rise along the assembly cavity 7, so that the sterilization lamp 8 is compressed in the assembly cavity 7 and isolated from the tube cavity of the second butt joint tube 2; conversely, when the tube mouth of the first butt joint tube 1 rotates counterclockwise relative to the tube mouth of the second butt joint tube 2, the stainless steel wire 12 is relaxed downward, and the compression plate 10 is lowered along the assembly cavity 7 by relaxing downward, and the sterilization lamp 8 is exposed from the bottom of the lower end of the liner 5 in the tube cavity of the second butt joint tube 2, so that the tube cavity of the second butt joint tube 2 is automatically sterilized.

[0029] Further preferably, the upper end of the assembly cavity 7 is close to the fixing portion 6 , and the lower end of the liner tube 5 extends to the middle of the cavity of the second butt joint tube 2 .

[0030] Further preferably, the germicidal lamp 8 is composed of a flexible outer lamp body 9 and a UV-C ultraviolet lamp wick 91 arranged in the lamp body 9. The lamp body 9 is spiral-shaped. When the compression plate 10 rises, the lamp body 9 is elastically compressed in the assembly cavity 7. One end of the germicidal lamp 8 has positive and negative power lines extending outward and connected to the power supply (the inner end is connected to the UV-C ultraviolet lamp wick 91). The power supply can be an external power supply or a power supply device installed on the pipe. The power supply device must have a button, which is a prior art. Turning on the button will charge the UV-C ultraviolet lamp wick 91. The UV-C ultraviolet lamp wick 91 is a prior art. The light emitted is not only released outward through the lamp body 9, but also amplified by the lamp body 9. The ultraviolet light generated extends the sterilization area through the spiral shape, serving the second butt joint 2 and the first butt joint 1 The lumen completes the sterilization operation.

[0031] Further preferably, a smooth rounded surface 20 is provided at the transition between the upper end of the liner 5 and the fixing portion 6, the rounded surface 20 smoothly transitions with the cavity wall of the liner 5, and the first butt joint tube 1, the second butt joint tube 2 and the cavity wall of the liner 5 are polished, and the smoothness level is consistent with the rounded surface 20.

[0032] Further preferably, the lower end of the liner 5 is flat, and the lower end of the second butt-jointing pipe 2 is provided with a curved portion 13, which continues to tilt downward and is connected to the conveying pipeline to ensure smooth flow.

[0033] Further preferably, a plane 14 is provided at the upper end of the fixing portion 6, and a sealing groove 15 is opened downward from the top of the plane 14, and a sealing ring 16 is fixed to the bottom of the lower end pipe mouth of the first butt joint pipe 1, and the sealing ring 16 is located in the sealing groove 15, so that the pipe mouth joint of the first butt joint pipe 1 and the second butt joint pipe 2 is sealed, and a protrusion 17 is provided on the bottom surface of the sealing ring 16, the upper end of the pulling hole 11 is communicated with the sealing groove 15, the upper end of the stainless steel wire 12 enters the sealing groove 15, and a hanging ring 18 is provided, the protrusion 17 follows the sealing ring 16 to extend into the sealing groove 15 and is inserted into the hanging ring 18, the stainless steel wire 12 is distributed at two locations at equal angles, and a hanging ring 18 is provided at the upper end of each stainless steel wire 12, the pulling holes 11 are two locations at equal angles, and each stainless steel wire 12 passes through a pulling hole 11 to enter the sealing groove 15, the protrusions 17 are two locations at equal angles, and are arranged on the bottom surface of the sealing ring 16, and each protrusion 17 is inserted into a hanging ring 18.

[0034] Principle and technical effect: Figure 1 , Figure 2As shown, the first butt joint 1 and the second butt joint 2 are butt jointed together by a metal clamp 3. When used in a vertical state, the first butt joint 1 is located on the upper side and the second butt joint 2 is located on the lower side. The two pipes are connected, and then another set of metal clamps 3 is used to realize the connection of pipes at each stage and connect them to industrial equipment with high cleanliness requirements. The liner 5 is arranged in the second butt joint 2. The fixing part 6 at the top of the liner 5 is positioned between the pipe mouth of the first butt joint 1 and the pipe mouth of the second butt joint 2 by using an outward-turned structure. The sealing ring 16 on the pipe mouth of the first butt joint 1 enters the sealing groove 15 on the fixing part 6 to realize a sealed connection, and the protrusion 17 on the bottom surface of the sealing ring 16 is inserted into the hanging ring 18. The first butt joint 1 is rotated circumferentially relative to the pipe mouth of the second butt joint 2. The pipe mouth of the first butt joint 1 rotates with the sealing ring 16, and the sealing ring 16 rotates with the protrusion 17 on the bottom surface, so that the protrusion 17 changes its position in the sealing groove 15 along the circumferential direction. For example, when rotating clockwise, the hanging ring 18 will be dragged along the sealing groove 1 5 rotates, the hanging ring 18 drags the stainless steel wire 12 to tighten the stainless steel wire 12, the stainless steel wire 12 drags the compression plate 10, and the compression plate 10 pushes the lamp body 9 to rise along the assembly cavity 7. The compression force generated when the compression plate 10 rises is used to push the lamp body 9 upward and compress it in the assembly cavity 7. The lamp body 9 pushes the UV-C ultraviolet lamp core 91 upward and compresses it in the assembly cavity 7. When the lamp body 9 is compressed to the limit, the compression plate 10 rises to the limit position, and the stainless steel wire 12 reaches the drag limit. At this time, the first docking The rotation of tube 1 is blocked, which proves that the first butt joint tube 1 does not need to rotate relative to the second butt joint tube 2. At this time, the metal clamp 3 is locked, and the first butt joint tube 1 and the second butt joint tube 2 are tightly clamped by the metal clamp 3. The two tubes are docked. While the two tubes are docked, the sterilization lamp 8 can be controlled to be compressed in the assembly cavity 7 of the liner 5. When the stainless steel pipe fitting is connected to the practical pipeline for use, the medium will not flow onto the sterilization lamp 8, and will not affect the sterilization lamp 8. At this time, the bottom end of the sterilization lamp 8 is covered by the compression plate 10 in the assembly cavity 7.

[0035] When the lumen needs to be purified, loosen the metal clamp 3 so that the first butt joint tube 1 can rotate counterclockwise relative to the second butt joint tube 2. During operation, ensure that the tube openings of the first butt joint tube 1 and the tube openings of the second butt joint tube 2 are always in docking. The tube opening of the first butt joint tube 1 drives the sealing ring 16 to rotate in the opposite direction, the sealing ring 16 drives the protrusion 17 to rotate in the opposite direction, and the protrusion 17 drives the hanging ring 18 to rotate in the opposite direction. The tension on the hanging ring 18 disappears, the stainless steel wire 12 changes from being taut to being relaxed, the compression plate 10 descends along the assembly cavity 7, and the lamp body 9 releases its length downward under the action of the spiral. That is, at this time, the sterilization lamp 8 is exposed from the bottom of the lower end of the liner 5 into the lumen of the second butt joint tube 2, so that the lumen of the second butt joint tube 2 is sterilized. Although the sterilization lamp 8 cannot be completely exposed from the bottom end of the liner 5 to the lumen of the second butt joint tube 2, the ultraviolet rays it emits can meet the sterilization needs, and it is worth noting that, if Figure 3 , Figure 5 As shown, if the pipe section is long and multiple pipe fittings need to be stacked, the pipe fittings are continued to be connected above the first connecting pipe 1 in the same structure and installation manner, and another set of liner pipes 5 and another set of germicidal lamps 8 are compressed in the assembly cavity 7 in the same docking manner. After each pipe section is loosened and rotated in the same way, the respective germicidal lamps 8 can be controlled to extend outward, and the sealed sterilization operation is completed on the pipe cavity to ensure that the pipe cavity remains clean.

[0036] The pipe mouth docking structure described above makes it easy to operate the sterilizing lamp 8 in and outside the assembly cavity 7. During the operation, the liner 5 is always closed in the lumen, and the liner 5 keeps the sterilizing lamp 8 in the lumen at all times, ensuring that bacteria do not enter the lumen. During the sterilization operation, bacteria outside the tube are prevented from entering the lumen and causing new contamination to the lumen. This is suitable for scenarios of high-cleanliness pipeline transportation.

[0037] like Figure 4 , Figure 6 As shown, a rounded corner 19 is provided at the upper end of the pulling hole 11, and the rounded corner 19 smoothly transitions with the pulling hole 11. When the liquid medium is transported from the first butt joint pipe 1 to the second butt joint pipe 2, it will pass through the rounded corner 19. Under the smooth transition effect of the rounded corner 19, the accumulation of material between the two pipe openings is avoided, the breeding of bacteria is prevented, and the feeding is kept smooth.

[0038] like Fig.10 As shown, the lamp body 9 is a tapered spiral tube that gradually becomes thicker toward the bottom end. When the lamp body 9 is tightened and dragged by the stainless steel wire 12 and compressed into the assembly cavity 7, its tapered degree will automatically shrink radially. The tapered degree will not expand to the cavity wall of the assembly cavity 7, and will not form an extrusion effect with the cavity wall of the assembly cavity 7. Therefore, when the stainless steel wire 12 is relaxed, the lamp body 9 can still release a length downward from the assembly cavity 7, and the lamp body 9 will release light outward in a tapered shape, thereby increasing the sterilization area.

[0039] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0040] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-cleanliness stainless steel seamless pipe, characterized in that: The invention comprises a first butt joint pipe (1), a second butt joint pipe (2) and a cleaning mechanism (4), wherein the first butt joint pipe (1) is connected to the upper part of the second butt joint pipe (2) and seamlessly butt joint is achieved through a metal clamp (3), and the cleaning mechanism (4) comprises a liner pipe (5) arranged in the second butt joint pipe (2), and the upper end of the liner pipe (5) is provided with a fixing portion (6) which is flanged in the outer peripheral direction, and the fixing portion (6) is butt jointed between the pipe openings of the second butt joint pipe (2) and the first butt joint pipe (1) and is further fixed by the metal clamp (3), and the cleaning mechanism (4) comprises a liner pipe (5) arranged in the second butt joint pipe (2), and the fixing portion (6) is fixed by the metal clamp (3). The lower end of the liner (5) is provided with an assembly cavity (7) extending upward, the clean mechanism (4) further comprises a germicidal lamp (8) arranged in the assembly cavity (7), one end of the germicidal lamp (8) is connected upward to the bottom of the assembly cavity (7), a compression plate (10) is provided in the assembly cavity (7), the compression plate (10) is located at the bottom of the lower end of the germicidal lamp (8), a pulling hole (11) is provided between the fixing portion (6) and the bottom of the assembly cavity (7), the clean mechanism (4) further comprises a stainless steel wire (12) arranged in the assembly cavity (7) ), the top end of the stainless steel wire (12) passes through the pulling hole (11) upward to reach the top of the fixing portion (6) and is connected to the bottom end of the first butt joint pipe (1), and the bottom end of the stainless steel wire (12) is connected downward to the compression plate (10), and when the pipe end of the first butt joint pipe (1) rotates clockwise relative to the pipe end of the second butt joint pipe (2), the stainless steel wire (12) is pulled upward, and the compression plate (10) is pulled upward by pulling upward, and the compression plate (10) is pushed by the compression plate (10) along the installation The matching cavity (7) rises, so that the germicidal lamp (8) is compressed in the assembly cavity (7) and isolated from the tube cavity of the second butt joint tube (2); conversely, when the tube mouth of the first butt joint tube (1) rotates counterclockwise relative to the tube mouth of the second butt joint tube (2), the stainless steel wire (12) relaxes downward, and the compression plate (10) descends along the assembly cavity (7) through the downward relaxation, and the germicidal lamp (8) is exposed from the bottom of the lower end of the liner (5) into the tube cavity of the second butt joint tube (2), so that the tube cavity of the second butt joint tube (2) is automatically sterilized.

2. A high-cleanliness stainless steel seamless pipe according to claim 1, characterized in that: The upper end of the assembly cavity (7) is close to the fixing portion (6), and the lower end of the liner tube (5) extends to the middle of the cavity of the second butt joint tube (2).

3. A high-cleanliness stainless steel seamless pipe according to claim 2, characterized in that: The germicidal lamp (8) is composed of a lamp body (9) with a flexible outer layer and a UV-C ultraviolet lamp wick (91) arranged in the lamp body (9); the lamp body (9) is spiral-shaped; when the compression plate (10) rises, the lamp body (9) is elastically compressed in the assembly cavity (7).

4. A high-cleanliness stainless steel seamless pipe according to claim 3, characterized in that: A smooth rounded surface (20) is provided at the transition between the upper end of the liner (5) and the fixing portion (6); the rounded surface (20) smoothly transitions to the cavity wall of the liner (5); the first butt joint (1), the second butt joint (2) and the cavity wall of the liner (5) are polished, and the smoothness level is consistent with that of the rounded surface (20).

5. A high-cleanliness stainless steel seamless pipe according to claim 4, characterized in that: The lower end of the liner (5) is flat, and the lower end of the second butt-jointed pipe (2) is provided with a curved portion (13), and the curved portion (13) continues to slope downward.

6. A high-cleanliness stainless steel seamless pipe according to claim 5, characterized in that: The upper end of the fixing portion (6) is provided with a plane (14), and a sealing groove (15) is opened downward from the top of the plane (14). A sealing ring (16) is fixed at the bottom of the lower end of the first butt joint pipe (1). The sealing ring (16) is located in the sealing groove (15), so that the butt joint of the first butt joint pipe (1) and the second butt joint pipe (2) is sealed. A protrusion (17) is provided on the bottom surface of the sealing ring (16). The upper end of the pulling hole (11) is communicated with the sealing groove (15), and the upper end of the stainless steel wire (12) enters the sealing groove (15). A hanging ring (17) is provided. 8), the protrusion (17) follows the sealing ring (16) to extend into the sealing groove (15) and is inserted into the hanging ring (18), the stainless steel wire (12) is arranged at two locations with equal angles, and a hanging ring (18) is provided at the upper end of each stainless steel wire (12), the pulling holes (11) are arranged at two locations with equal angles, and each stainless steel wire (12) passes through a corresponding pulling hole (11) to enter the sealing groove (15), the protrusions (17) are arranged at two locations with equal angles on the bottom surface of the sealing ring (16), and each protrusion (17) is inserted into a hanging ring (18).

7. A high-cleanliness stainless steel seamless pipe according to claim 6, characterized in that: The upper end of the pulling hole (11) is provided with a rounded corner (19), and the rounded corner (19) is smoothly transitioned to the pulling hole (11).

8. A high-cleanliness stainless steel seamless pipe according to claim 7, characterized in that: The lumen of the liner tube (5) is a tapered cavity that gradually becomes thinner towards the bottom end, and the lamp body (9) is a tapered spiral tube that gradually becomes thicker towards the bottom end.

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