A sealing auxiliary structure for heat exchanger pipe fittings

Abstract

The present invention relates to the technical field of grinding devices, and specifically to a sealing auxiliary structure for heat exchanger pipe fittings, wherein the top of the fixed base plate is fixedly connected with a supporting main plate, the top of the fixed base plate is fixedly connected with a supporting sub-plate, the tops of the supporting main plate and the supporting sub-plate are fixedly connected with a mounting base plate, the top of the mounting base plate is fixedly connected with a grinding adjustment box, the interior of the grinding adjustment box is fixedly connected with two fixed side rings, the interior of the grinding adjustment box is fixedly connected with two second side rings, the fixed side rings and the inner sides of the second side rings are rotatably connected with an external worm gear, and by adopting a grinding roller, the pipe openings of the conducting straight pipe and the conducting U-shaped ring are perfectly connected after grinding, thereby ensuring the sealing and welding quality during welding, and in addition, the design of the one-way bearing of the pipe fixing roller effectively prevents the conducting straight pipe from accidentally retreating during welding, thereby improving the safety and convenience of operation.

Description

Technical Field

[0001] The invention relates to the technical field of polishing devices, in particular to a sealing auxiliary structure for heat exchanger pipe fittings. Background Art

[0002] Heat exchanger tubes are key components in heat exchangers and are primarily responsible for transferring heat. They are usually made of metal materials such as copper, aluminum or stainless steel to ensure good heat conduction performance.

[0003] In the prior art, most heat exchangers use U-shaped tubes to achieve connections between pipe fittings. In order to ensure that the heat exchanger has good sealing performance, it is recommended to grind the openings between the pipe fittings and the U-shaped tube before welding the U-shaped tube to ensure the flatness and cleanliness of the welding surface. To this end, the present invention provides a sealing auxiliary structure for heat exchanger pipe fittings. Summary of the invention

[0004] The object of the present invention is to provide a sealing auxiliary structure for heat exchanger pipes to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is: a sealing auxiliary structure for heat exchanger pipe fittings, comprising a fixed bottom plate, the top of the fixed bottom plate is fixedly connected with a supporting main plate, the top of the fixed bottom plate is fixedly connected with a supporting sub-plate, the top of the supporting main plate and the supporting sub-plate are fixedly connected with a mounting bottom plate, the top of the mounting bottom plate is fixedly connected with a grinding adjustment box, the inside of the grinding adjustment box is fixedly connected with two fixed side rings, the inside of the grinding adjustment box is fixedly connected with two second side rings, the inner sides of the fixed side rings and the second side rings are rotatably connected with an outer worm gear, the inner sides of the fixed side rings and the second side rings are rotatably connected with a rotating inner cylinder, the rotating inner cylinder is located on the inner side of the outer worm gear, the outer side of the rotating inner cylinder is equidistantly slidably connected with six inner push blocks, one end of the inner push block is fixedly connected with an inner push plate, the inner push plate and the inner push block are fixedly connected with two return springs on one side, the top of the return spring is fixedly connected to the inner wall of the rotating inner cylinder, the inner wall of the outer worm gear is equidistantly fixedly connected with six arc-shaped push blocks, and the inner side of the rotating inner cylinder is movably connected with a grinding roller One end of the grinding roller is a protruding hollow cone, and the other end of the grinding roller is a concave hollow cone. A clamping ring groove is provided on the outer side of the grinding roller, and the inner push plate is clamped in the clamping ring groove. The top of the fixed base plate is fixedly connected to a grinding motor, and the output end of the grinding motor is fixedly connected to a grinding worm, and the grinding worm passes through the mounting base plate. The grinding worm is located between two outer worm wheels, and the grinding worm and the outer worm wheels are meshed with each other. Two sliding grooves are provided inside the mounting base plate, and the top of the fixed base plate is fixedly connected to two A moving motor, the output end of the moving motor is fixedly connected with a threaded rotating rod, the threaded rotating rod penetrates the supporting main board and the top of the threaded rotating rod is rotatably connected with the supporting sub-board, the outer side of the threaded rotating rod is provided with two opposite threads, the outer side of the threaded rotating rod is threadedly connected with a tube moving plate, the top of the tube moving plate is fixedly connected with a tube connecting block, the outer side of the threaded rotating rod is threadedly connected with a ring moving plate, the top of the ring moving plate is fixedly connected with a ring connecting block, the tube connecting block and the ring connecting block are both slidably engaged in the sliding groove;When in use: fix the two conducting straight tubes and the conducting U-shaped ring on both sides of the grinding adjustment box respectively, place the two grinding rollers inside the two rotating inner cylinders, fix the clamping ring groove and the inner push plate, then start the grinding motor to drive the grinding worm to rotate, drive the two outer worm gears to rotate through the worm gear transmission, drive the arc push block to rotate, make the arc push block squeeze the inner push block through the inclined surface, make the six inner push blocks approach the grinding roller and squeeze and fix, when the arc push block cannot push the inner push block upward, it will push the inner push block to rotate, drive the rotating inner cylinder to rotate, drive the grinding roller to rotate, then control the conducting straight tube The tube and the conducting U-shaped ring are close to each other, driven by the moving motor, and connected by two opposite threads, so that the ring moving plate and the tube moving plate are close to each other, so that the conducting straight tube and the conducting U-shaped ring are close to the two ends of the grinding roller, and the grinding roller is rotated to grind the pipe openings of the conducting straight tube and the conducting U-shaped ring, and the conducting straight tube and the conducting U-shaped ring are grinded on the outside of the pipe opening and the inside of the pipe opening, so that the pipe openings of the conducting straight tube and the conducting U-shaped ring form a matching clamping structure, and then the grinding roller can be removed, so that the conducting straight tube passes through the grinding adjustment box, so that the conducting straight tube and the conducting U-shaped ring are fixed and fitted, which is convenient for welding. ;

[0006] Preferably, the top of the tube connecting block is fixedly connected with a tube fixing plate, one side of the tube fixing plate is fixedly connected with a tube fixing box, the interior of the tube fixing box is fixedly connected with two tube fixing shafts, the outer one-way bearing of the tube fixing shaft is connected with two tube fixing rollers, the outer tube fixing rollers of the two tube fixing shafts are tightly attached to each other, and the inner sides of the two tube fixing rollers are slidably clamped with a conducting straight tube, the outer grooves of the tube fixing rollers are provided with anti-slip grooves, the top of the ring connecting block is fixedly connected with a ring fixing plate, the interior of the ring fixing plate is slidably clamped with a conducting U-shaped ring, the top of the mounting base plate is provided with a T-shaped slot, the T The inner part of the shaped slot is slidably connected with a T-shaped plug, and the T-shaped plug is slidably connected to the outer side of the conductive U-shaped ring; when in use: the conductive U-shaped ring is inserted into the inner side of the ring fixing plate, the T-shaped plug is inserted into the outer side of the conductive U-shaped ring, the T-shaped plug is engaged with the T-shaped slot, the conductive U-shaped ring is fixed, the conductive straight pipe passes through the pipe fixing plate and the pipe fixing box, and the two conductive straight pipes slide simultaneously on the inner side of the pipe fixing roller. Because the pipe fixing roller is connected with a one-way bearing, the conductive straight pipe can only move toward the grinding adjustment box, so that during welding, the conductive straight pipe will not be pushed backward, and when taken out, it can be taken out through one side of the conductive U-shaped ring.

[0007] The present invention provides a sealing auxiliary structure for heat exchanger pipes through improvement, which has the following improvements and advantages compared with the prior art:

[0008] First, a sealing auxiliary structure for heat exchanger pipes described in the present invention respectively fixes two conducting straight pipes and a conducting U-shaped ring on both sides of a grinding adjustment box, and fixes the clamping ring groove and the inner push plate by placing two grinding rollers inside two rotating inner cylinders. Then, the grinding motor is started to drive the grinding worm to rotate, and the two outer worm gears are driven to rotate through the worm gear transmission, which drives the arc push block to rotate, so that the arc push block squeezes the inner push block through the inclined surface, so that the six inner push blocks are close to the grinding roller and squeezed and fixed. When the arc push block cannot push the inner push block upward, it will push the inner push block to rotate, drive the rotating inner cylinder to rotate, and drive the grinding roller Rotate, then control the conducting straight tube and the conducting U-shaped ring to approach each other, and drive the moving motor through two opposite threaded connections to make the ring moving plate and the tube moving plate approach each other, so that the conducting straight tube and the conducting U-shaped ring are close to the two ends of the grinding roller, and the grinding roller is rotated to grind the pipe openings of the conducting straight tube and the conducting U-shaped ring, and one of the conducting straight tube and the conducting U-shaped ring grinds the outer side of the pipe opening and the other grinds the inner side of the pipe opening, so that the pipe openings of the conducting straight tube and the conducting U-shaped ring form a matching clamping structure, and then the grinding roller can be removed, so that the conducting straight tube passes through the grinding adjustment box, so that the conducting straight tube and the conducting U-shaped ring are fixed and fitted, which is convenient for welding;

[0009] Second, the sealing auxiliary structure for heat exchanger pipes of the present invention allows the conducting U-shaped ring to be inserted into the inner side of the ring fixing plate, the T-shaped plug block to be inserted into the outer side of the conducting U-shaped ring, the T-shaped plug block to be engaged with the T-shaped slot, the conducting U-shaped ring to be fixed, the conducting straight pipe to pass through the pipe fixing plate and the pipe fixing box, and the two conducting straight pipes to slide simultaneously on the inner side of the pipe fixing roller. Because the pipe fixing roller is connected by a one-way bearing, the conducting straight pipe can only move toward the grinding adjustment box, so that during welding, the conducting straight pipe will not be pushed backward, and when taken out, it can be taken out through one side of the conducting U-shaped ring;

[0010] Summary: The sealing auxiliary structure for heat exchanger pipe fittings described in the present invention adopts a grinding roller to grind the pipe mouth of the conducting straight pipe and the conducting U-shaped ring to perfectly butt joint, thereby ensuring the sealing and welding quality during the welding process. In addition, the design of the one-way bearing of the pipe fixing roller effectively prevents the accidental retreat of the conducting straight pipe during welding, thereby improving the safety and convenience of operation. This structure is not only suitable for sealing assistance of heat exchanger pipe fittings, but can also be widely used in other occasions that require precise butt joint and welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 It is a schematic diagram of the structure of the grinding adjustment box of the present invention;

[0014] Figure 3 It is a schematic diagram of the structure of the grinding roller of the present invention;

[0015] Figure 4 It is a schematic diagram of the structure of the outer worm gear of the present invention;

[0016] Figure 5 It is a schematic diagram of the inner push plate structure of the present invention;

[0017] Figure 6 It is a schematic diagram of the structure of the tube fixing roller of the present invention;

[0018] Figure 7 It is a schematic diagram of the installation base plate structure of the present invention;

[0019] Figure 8 It is a schematic diagram of the structure of the threaded rotating rod of the present invention;

[0020] Fig. 9 It is a side view of the outer worm gear of the present invention.

[0021] Description of reference numerals:

[0022] 1. Fix the bottom plate; 2. Support the main board; 3. Install the bottom plate; 4. Grinding adjustment box; 5. Grinding motor; 6. Grinding worm; 7. Grinding roller; 8. Fixed side ring; 9. Outer worm gear; 10. Second side ring; 11. Arc push block; 12. Rotate the inner cylinder; 13. Inner push block; 14. Inner push plate; 15. Reset spring; 16. Tube fixing plate; 17. Tube fixing box; 18. Tube fixing shaft; 19. Tube fixing roller; 20. Conductive straight tube; 21. T-shaped slot; 22. T-shaped plug-in block; 23. Ring fixing plate; 24. Conductive U-shaped ring; 25. Ring connecting block; 26. Support sub-plate; 27. Moving motor; 28. Threaded rotating rod; 29. ​​Tube moving plate; 30. Tube connecting block; 31. Ring moving plate. DETAILED DESCRIPTION

[0023] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides a sealing auxiliary structure for heat exchanger pipes through improvement. The technical solution of the present invention is:

[0025] like Figure 1-Figure 9As shown, a sealing auxiliary structure for heat exchanger pipes includes a fixed bottom plate 1, a support main plate 2 is fixedly connected to the top of the fixed bottom plate 1, a support sub-plate 26 is fixedly connected to the top of the fixed bottom plate 1, a mounting bottom plate 3 is fixedly connected to the top of the support main plate 2 and the support sub-plate 26, a grinding adjustment box 4 is fixedly connected to the top of the mounting bottom plate 3, two fixed side rings 8 are fixedly connected to the inside of the grinding adjustment box 4, two second side rings 10 are fixedly connected to the inside of the grinding adjustment box 4, an outer worm gear 9 is rotatably connected to the inner side of the fixed side ring 8 and the second side ring 10, and a fixed The inner sides of the fixed side ring 8 and the second side ring 10 are rotatably connected with a rotating inner cylinder 12, and the rotating inner cylinder 12 is located on the inner side of the outer worm gear 9. Six inner push blocks 13 are equidistantly slidably clamped on the outer side of the rotating inner cylinder 12. One end of the inner push block 13 is fixedly connected with an inner push plate 14. Two return springs 15 are fixedly connected to the side adjacent to the inner push plate 14 and the inner push block 13. The top end of the return spring 15 is fixedly connected to the inner wall of the rotating inner cylinder 12. Six arc-shaped push blocks 11 are equidistantly fixedly connected to the inner wall of the outer worm gear 9. The inner side of the rotating inner cylinder 12 is movably clamped with a grinding roller 7. One end of the roller 7 is a protruding hollow cone, and the other end of the grinding roller 7 is a concave hollow cone. A snap ring groove is provided on the outer side of the grinding roller 7, and the inner push plate 14 is snapped into the snap ring groove. A grinding motor 5 is fixedly connected to the top of the fixed base plate 1, and a grinding worm 6 is fixedly connected to the output end of the grinding motor 5. The grinding worm 6 passes through the mounting base plate 3, and the grinding worm 6 is located between the two outer worm wheels 9. The grinding worm 6 and the outer worm wheels 9 are meshed with each other. Two sliding grooves are provided inside the mounting base plate 3. Two mobile motors 27 are fixedly connected to the top of the fixed base plate 1. The mobile motor The output end of the machine 27 is fixedly connected with a threaded rotating rod 28, which penetrates the supporting main board 2 and the top of the threaded rotating rod 28 is rotatably connected with the supporting sub-board 26. The outer side of the threaded rotating rod 28 is provided with two opposite threads. The outer side of the threaded rotating rod 28 is threadedly connected with a tube moving plate 29, and the top of the tube moving plate 29 is fixedly connected with a tube connecting block 30. The outer side of the threaded rotating rod 28 is threadedly connected with a ring moving plate 31, and the top of the ring moving plate 31 is fixedly connected with a ring connecting block 25. The tube connecting block 30 and the ring connecting block 25 are both slidably engaged in the sliding groove.When in use: fix the two conducting straight pipes 20 and the conducting U-shaped ring 24 to the two sides of the grinding adjustment box 4 respectively, and fix the clamping ring groove and the inner push plate 14 by placing the two grinding rollers 7 inside the two rotating inner cylinders 12, and then start the grinding motor 5 to drive the grinding worm 6 to rotate, and drive the two outer worm wheels 9 to rotate through the worm gear transmission, and drive the arc push block 11 to rotate, so that the arc push block 11 squeezes the inner push block 13 through the inclined surface, so that the six inner push blocks 13 are close to the grinding roller 7 and squeezed and fixed. When the arc push block 11 cannot push the inner push block 13 upward, it will push the inner push block 13 to rotate, drive the rotating inner cylinder 12 to rotate, drive the grinding roller 7 to rotate, and then control the conducting straight pipe 2 0 and the conducting U-shaped ring 24 are close to each other, driven by the moving motor 27, and connected by two opposite threads, so that the ring moving plate 31 and the tube moving plate 29 are close to each other, so that the conducting straight tube 20 and the conducting U-shaped ring 24 are close to the two ends of the grinding roller 7, and the grinding roller 7 is rotated to grind the pipe openings of the conducting straight tube 20 and the conducting U-shaped ring 24, and the conducting straight tube 20 and the conducting U-shaped ring 24 are grinded on the outside of the pipe opening and the inside of the pipe opening, so that the pipe openings of the conducting straight tube 20 and the conducting U-shaped ring 24 form a matching clamping structure, and then the grinding roller 7 can be removed, so that the conducting straight tube 20 passes through the grinding adjustment box 4, so that the conducting straight tube 20 and the conducting U-shaped ring 24 are fixed and fitted, which is convenient for welding. ;

[0026] Furthermore, a tube fixing plate 16 is fixedly connected to the top of the tube connection block 30, a tube fixing box 17 is fixedly connected to one side of the tube fixing plate 16, two tube fixing shafts 18 are fixedly connected to the inside of the tube fixing box 17, two tube fixing rollers 19 are connected to the outer one-way bearing of the tube fixing shaft 18, the outer tube fixing rollers 19 of the two tube fixing shafts 18 are tightly attached to each other, and the inner sides of the two tube fixing rollers 19 are slidably connected with a conducting straight tube 20, and the outer grooves of the tube fixing rollers 19 are provided with anti-slip grooves, the top of the ring connection block 25 is fixedly connected with a ring fixing plate 23, and a conducting U-shaped ring 24 is slidably connected to the inside of the ring fixing plate 23, and a T-shaped slot 21 is provided on the top of the mounting base plate 3, and the inner sliding groove of the T-shaped slot 21 is provided with a conducting U-shaped ring 24. A T-shaped plug block 22 is clamped, and the T-shaped plug block 22 is slidably clamped on the outer side of the conductive U-shaped ring 24; when in use: the conductive U-shaped ring 24 is inserted into the inner side of the ring fixing plate 23, and the T-shaped plug block 22 is inserted into the outer side of the conductive U-shaped ring 24, so that the T-shaped plug block 22 is engaged with the T-shaped clamping groove 21, so that the conductive U-shaped ring 24 is fixed, and the conductive straight pipe 20 passes through the pipe fixing plate 16 and the pipe fixing box 17, so that the two conductive straight pipes 20 slide simultaneously on the inner side of the pipe fixing roller 19. Because the pipe fixing roller 19 is a one-way bearing connection, the conductive straight pipe 20 can only move toward the grinding adjustment box 4, so that during welding, the conductive straight pipe 20 will not be pushed to move backward. When taking it out, it can be taken out through one side of the conductive U-shaped ring 24.

[0027] Working principle: When in use: fix the two conducting straight tubes 20 and the conducting U-shaped ring 24 to the two sides of the grinding adjustment box 4 respectively, and fix the clamping ring groove and the inner push plate 14 by placing the two grinding rollers 7 inside the two rotating inner cylinders 12, and then start the grinding motor 5 to drive the grinding worm 6 to rotate, and drive the two outer worm wheels 9 to rotate through the worm gear transmission, and drive the arc push block 11 to rotate, so that the arc push block 11 squeezes the inner push block 13 through the inclined surface, so that the six inner push blocks 13 are pushed toward the grinding roller 7 is close to and squeezed and fixed. When the arc-shaped push block 11 cannot push the inner push block 13 upward, it will push the inner push block 13 to rotate, drive the rotating inner cylinder 12 to rotate, and drive the grinding roller 7 to rotate. Then, the conductive straight pipe 20 and the conductive U-shaped ring 24 are controlled to approach each other, and driven by the moving motor 27, through two opposite thread connections, the ring moving plate 31 and the tube moving plate 29 are made to approach each other, so that the conductive straight pipe 20 and the conductive U-shaped ring 24 are close to the two ends of the grinding roller 7, so that the grinding roller 7 is rotated to grind the conductive straight pipe 20 and the conductive U-shaped ring 24. The straight tube 20 and the conducting U-shaped ring 24 are connected, and one of the conducting straight tube 20 and the conducting U-shaped ring 24 is polished on the outside of the tube opening and the other on the inside of the tube opening, so that the conducting straight tube 20 and the conducting U-shaped ring 24 form a matching clamping structure, and then the grinding roller 7 can be removed, so that the conducting straight tube 20 passes through the grinding adjustment box 4, so that the conducting straight tube 20 and the conducting U-shaped ring 24 are fixed and fitted, which is convenient for welding, so that the conducting U-shaped ring 24 is inserted into the inner side of the ring fixing plate 23, and the T-shaped plug block 22 is inserted into The outside of the conductive U-shaped ring 24 is engaged with the T-shaped plug 22 and the T-shaped slot 21 to fix the conductive U-shaped ring 24, so that the conductive straight tube 20 passes through the tube fixing plate 16 and the tube fixing box 17, and the two conductive straight tubes 20 slide simultaneously on the inner side of the tube fixing roller 19. Because the tube fixing roller 19 is a one-way bearing connection, the conductive straight tube 20 can only move toward the grinding adjustment box 4, so that during welding, the conductive straight tube 20 will not be pushed backward. When taking it out, it can be taken out through one side of the conductive U-shaped ring 24.

[0028] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sealing auxiliary structure for a heat exchanger pipe, comprising a fixed bottom plate (1), characterized in that: The top of the fixed base plate (1) is fixedly connected to a supporting main plate (2), the top of the fixed base plate (1) is fixedly connected to a supporting sub-plate (26), the tops of the supporting main plate (2) and the supporting sub-plate (26) are fixedly connected to a mounting base plate (3), the top of the mounting base plate (3) is fixedly connected to a grinding adjustment box (4), the interior of the grinding adjustment box (4) is fixedly connected to two fixed side rings (8), the interior of the grinding adjustment box (4) is fixedly connected to two second side rings (10), the inner sides of the fixed side rings (8) and the second side rings (10) are rotatably connected to an outer worm gear (9), and the fixed The inner sides of the side ring (8) and the second side ring (10) are rotatably connected to a rotating inner cylinder (12), the rotating inner cylinder (12) is located on the inner side of the outer worm wheel (9), the outer side of the rotating inner cylinder (12) is equidistantly slidably connected to six inner push blocks (13), one end of the inner push block (13) is fixedly connected to an inner push plate (14), the inner push plate (14) and the inner push block (13) are fixedly connected to two return springs (15), the top end of the return spring (15) is fixedly connected to the inner wall of the rotating inner cylinder (12), and the inner wall of the outer worm wheel (9) is equidistantly fixedly connected to six arc-shaped push blocks (11); A grinding roller (7) is movably clamped on the inner side of the rotating inner cylinder (12); one end of the grinding roller (7) is a convex hollow cone, and the other end of the grinding roller (7) is a concave hollow cone; a clamping ring groove is provided on the outer side of the grinding roller (7), and an inner push plate (14) is clamped in the clamping ring groove; A grinding motor (5) is fixedly connected to the top of the fixed base plate (1), and a grinding worm (6) is fixedly connected to the output end of the grinding motor (5). The grinding worm (6) passes through the mounting base plate (3), and the grinding worm (6) is located between two outer worm wheels (9). The grinding worm (6) and the outer worm wheels (9) are meshed with each other.

2. The sealing auxiliary structure for heat exchanger pipe according to claim 1, characterized in that: Two sliding grooves are provided inside the mounting base plate (3); two moving motors (27) are fixedly connected to the top of the fixed base plate (1); a threaded rotating rod (28) is fixedly connected to the output end of the moving motor (27); the threaded rotating rod (28) passes through the supporting main plate (2) and the top of the threaded rotating rod (28) is rotatably connected to the supporting sub-plate (26); two opposite threads are provided on the outer side of the threaded rotating rod (28); a tube moving plate (29) is threadedly connected to the outer side of the threaded rotating rod (28); a tube connecting block (30) is fixedly connected to the top of the tube moving plate (29); a ring moving plate (31) is threadedly connected to the outer side of the threaded rotating rod (28); a ring connecting block (25) is fixedly connected to the top of the ring moving plate (31); the tube connecting block (30) and the ring connecting block (25) are both slidably engaged in the sliding groove.

3. The sealing auxiliary structure for heat exchanger pipe according to claim 2, characterized in that: A tube fixing plate (16) is fixedly connected to the top of the tube connection block (30), a tube fixing box (17) is fixedly connected to one side of the tube fixing plate (16), two tube fixing shafts (18) are fixedly connected inside the tube fixing box (17), two tube fixing rollers (19) are connected to the outer one-way bearings of the tube fixing shafts (18), the outer tube fixing rollers (19) of the two tube fixing shafts (18) are closely attached to each other, and the inner sides of the two tube fixing rollers (19) are slidably clamped with a conducting straight tube (20).

4. The sealing auxiliary structure for heat exchanger pipe according to claim 3, characterized in that: The outer groove of the tube fixing roller (19) is provided with anti-slip grooves.

5. The sealing auxiliary structure for heat exchanger pipe according to claim 4, characterized in that: The top of the ring connection block (25) is fixedly connected to a ring fixing plate (23), a conductive U-shaped ring (24) is slidably engaged inside the ring fixing plate (23), a T-shaped slot (21) is provided on the top of the mounting base plate (3), a T-shaped insert block (22) is slidably engaged inside the T-shaped slot (21), and the T-shaped insert block (22) is slidably engaged on the outside of the conductive U-shaped ring (24).

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