Liquid oxygen bursting pipe manufacturing structure and bursting method

Abstract

The application belongs to the technical field of blasting, and particularly relates to a liquid oxygen blasting pipe manufacturing structure and a blasting method. The existing liquid oxygen blasting pipe has strong damage to the surrounding environment, has safety hazards in the blasting process, and has increasingly strict explosive control, and is prone to safety accidents in the preparation process. The present application provides the following scheme, which comprises a liquid oxygen blasting pipe composed of an aluminum pipe and first and second clamping plates. The first and second clamping plates are fixed on both ends of the aluminum pipe by bolts. The outer wall of the liquid oxygen blasting pipe is adhered with a tape layer. In the present application, a combustible layer, a film bag and a pearl cotton layer are sequentially sleeved on the outer wall of the aluminum pipe and cooperate with the first and second clamping plates to form the liquid oxygen blasting pipe. Liquid oxygen is injected into the aluminum pipe, and then the liquid oxygen blasting pipe is detonated. The blasting vibration is small, and the damage to the surrounding environment is weak. When the liquid oxygen blasting pipe is prepared, the tape layer can be automatically adhered to the outer wall of the liquid oxygen blasting pipe, and the preparation is relatively simple.

Description

Technical Field

[0001] This invention relates to the field of blasting technology, and in particular to a liquid oxygen blasting tube manufacturing structure and blasting method. Background Technology

[0002] The aluminum tube serves as a transport channel for liquid oxygen. The holes in the tube allow the liquid oxygen to pass through, facilitating absorption by flammable materials (such as toilet paper). Traditional blasting (using explosives) involves directly burying emulsion explosives (pyrotechnics) and detonators in holes and then detonating them for blasting operations.

[0003] However, traditional blasting still has some shortcomings in its application:

[0004] 1. Traditional blasting uses explosives and detonators for blasting, which has the characteristics of large vibrations, strong destructive power to the surrounding environment (buildings, landforms, etc.), and safety hazards during the blasting process. In addition, in recent years, the control of explosives has become increasingly strict, and many mines and construction sites cannot use explosive blasting.

[0005] 2. Traditional blasting tubes are made using explosives and detonators, which is relatively complex to manufacture. Explosives are dangerous materials and are prone to explosion during preparation, which can lead to production accidents.

[0006] To address the aforementioned problems, this invention proposes a liquid oxygen blasting tube manufacturing structure and blasting method. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies, such as strong environmental damage, safety hazards during blasting, increasingly strict control of explosives, and the susceptibility to safety accidents during preparation. This invention proposes a liquid oxygen blasting tube manufacturing structure and blasting method.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A liquid oxygen blasting tube manufacturing structure includes a liquid oxygen blasting tube, which is composed of an aluminum tube and a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate are respectively fixed to both ends of the aluminum tube by bolts, and the outer wall of the liquid oxygen blasting tube is adhesively coated with a layer of adhesive tape.

[0010] A movable frame, wherein a base plate is fixed inside the movable frame by bolts, and a liquid oxygen tank is fixed to the top of the base plate;

[0011] An adhesive structure is set on both sides of the moving frame to automatically adhere the tape layer to the outer wall of the liquid oxygen rupture tube.

[0012] A clamping structure, located at the top of the moving frame, is used to secure the liquid oxygen tank.

[0013] In one possible design, the outer wall of the aluminum tube is covered with multiple layers of combustible material. Two combustible material layers on both sides abut against the inner walls of the first and second clamping plates, respectively. The outer walls of the multiple combustible material layers are covered with film bags, and the outer walls of the film bags are covered with pearl cotton layers. The ends of the pearl cotton layers and the film bags abut against the inner walls of the first and second clamping plates, respectively. The aluminum tube has multiple permeation holes, and one of the combustible material layers contains multiple igniters, with the power cord of the igniter extending to the outside and electrically connected to the detonator. The combustible material layers can be toilet paper, and there is no further limitation. By sequentially wrapping the outer wall of the aluminum tube with combustible material layers, film bags, and pearl cotton layers, the liquid oxygen rupture tube can be easily prepared, and the preparation process is very safe.

[0014] In one possible design, the aluminum tube has a through hole at one end near the second clamping plate. A threaded platform is provided within the through hole, and the inner wall of the through hole has an internal thread. One side of the outer wall of the threaded platform has an external thread. The through hole is threadedly connected to the threaded platform. A liquid injection tube is fixedly inserted through the threaded platform, with one end extending into the aluminum tube and the other end penetrating the second clamping plate and extending to one side of the second clamping plate. The liquid injection tube consists of two parts, each with a flared opening at a relative position. Each part is fitted with an internally threaded sleeve and an externally threaded sleeve, respectively. The threaded connection between the internally and externally threaded sleeves allows for… The injection tube consists of two detachably fixed parts. A first valve is fitted on the outer wall of the injection tube, and an oxygen supply tube is fitted on the end of the injection tube away from the first clamping plate. The injection tube can be inserted into the aluminum tube through the cooperation of the through hole and the threaded platform. When blasting is required, liquid oxygen is injected into the aluminum tube through the oxygen supply tube and the injection tube. After the oxygen injection is completed, the oxygen supply tube is cut off, and the ignition is carried out by an igniter. The blasting has the characteristics of low vibration, weak damage to the surrounding environment, and environmental protection (oxygen is extremely volatile). It does not leave any safety hazards for the rare unexploded fractured tubes (it is impossible for secondary blasting to occur due to external impact or pressure).

[0015] In one possible design, the adhesive structure includes two support plates respectively disposed on both sides of the movable frame. Support plates are bolted to the top of each support plate, serving to support and limit the liquid oxygen blasting tube. A fixing block is bolted to the top of each support plate, located between the two support plates. A rotating ring slides within the fixing block, with one end of the liquid oxygen blasting tube passing through the rotating ring. Two base plates are bolted to the top inner wall of the rotating ring, with a roll of adhesive tape detachably between the two base plates. A worm gear is fixed to the outer wall of the rotating ring, and a worm is rotatably connected within the fixing block, meshing with the worm gear. Two second sprockets are fixedly sleeved on the outer wall of the worm. One end of the roll of adhesive tape is adhered to the outer wall of one end of the liquid oxygen blasting tube. A motor drives the worm to rotate, which in turn drives the rotating ring to rotate via the worm gear. As the rotating ring rotates, it wraps the adhesive tape around the outer wall of the liquid oxygen blasting tube, providing further protection and preventing the pearl cotton layer from becoming too loose and affecting the subsequent insertion of the liquid oxygen blasting tube into the mine.

[0016] In one possible design, the adhesive structure further includes two sets of conveying structures disposed on both sides of the top of the support plate. The two sets of conveying structures are respectively located on both sides of the fixed block. Each conveying structure includes multiple bases fixed to the top of the support plate by bolts. A rotating shaft is rotatably connected inside each base. A conveying wheel for conveying the liquid oxygen blasting tube is fixedly sleeved on the outer wall of the rotating shaft. The outer wall of the conveying wheel has an annular groove that mates with the outer wall of the liquid oxygen blasting tube. One end of the rotating shaft rotatably passes through the base and is fixedly connected to a first sprocket. The second sprocket is connected to the multiple first sprockets via chain drive. When the adhesive tape is wrapped around the outer wall of the liquid oxygen blasting tube, the worm gear drives the multiple conveying wheels to rotate through the cooperation of the second sprocket, the first sprocket, and the chain. The conveying wheels convey the liquid oxygen blasting tube to the left, and the rotating ring can accelerate the preparation of the liquid oxygen blasting tube by wrapping the adhesive tape around its outer wall.

[0017] In one possible design, the clamping structure includes two connecting lugs welded to both sides of the top of the movable frame. Each of the two support plates has two connecting holes corresponding to the connecting lugs. The support plates are rotatably connected within the movable frame. Two limiting blocks are provided at the bottom of each support plate to limit its movement. The sides of the two limiting blocks that are far apart from each other are fixedly connected to the inner walls of both sides of the movable frame. The connecting lugs and connecting holes are connected by connecting ropes. By passing the connecting ropes through the connecting lugs and connecting holes, the support plates rotate, allowing the worm gear to abut against the rubber layer, thereby clamping and fixing the liquid oxygen tank. This prevents the liquid oxygen tank from shaking during subsequent handling of the movable frame and the liquid oxygen tank.

[0018] In one possible design, the inner walls of the two adjacent sides of the fixing block are fixed with arc-shaped sliding plates by bolts. The rotating ring has annular grooves on both sides, and the annular grooves slide in cooperation with the arc-shaped sliding plates. One end of the liquid oxygen tank is provided with multiple connecting pipes, and the connecting pipes cooperate with the oxygen delivery pipes. The outer wall of the connecting pipes is fitted with a second valve. The cooperation between the arc-shaped sliding plates and the annular grooves allows the rotating ring to rotate smoothly and wrap the tape around the outer wall of the liquid oxygen bursting pipe. In addition, liquid oxygen can be injected into the aluminum pipe through the connecting pipes and the second valve.

[0019] In one possible design, a rubber sealing ring extending into the through hole is fitted on the outer wall of the other side of the threaded platform; the rubber sealing ring can increase the sealing performance of the through hole.

[0020] In one possible design, the outer wall of the aluminum tube is welded with multiple barbed plates, with one end of the barbed plate facing the first clamping plate. Multiple igniters are fitted onto the outer wall of the aluminum tube and move toward the first clamping plate. The barbed plates do not obstruct the movement of the igniters. When the combustible layer moves in the opposite direction, the barbed plates can block the combustible layer, thereby preventing the combustible layer from loosening when it is fitted onto the outer wall of the aluminum tube.

[0021] This application discloses a method for detonating a liquid oxygen detonating tube, comprising the following steps:

[0022] S1. Fix one end of the aluminum tube to the first clamping plate. Then, put multiple combustible material layers on the outer wall of the aluminum tube one by one, and the first clamping plate limits the combustible material layers. Place an igniter inside the multiple combustible material layers. The connection line of the igniter extends to the outside. Wrap multiple combustible material layers with a film bag. Put the second clamping plate on the other end of the aluminum tube. The second clamping plate limits the pearl cotton layer, the film bag and the combustible material layer on the right side. Screw the threaded plate into the through hole to form a liquid oxygen rupture tube.

[0023] S2. Place the wrapped liquid oxygen bursting tube on one of the support plates. At this time, one end of the liquid oxygen bursting tube just passes through the rotating ring and the liquid oxygen bursting tube is located on multiple conveying wheels. Attach one end of the roll of tape to the outer wall of one end of the liquid oxygen bursting tube. Drive the worm gear to rotate through the motor. The worm gear drives the rotating ring to rotate through the worm wheel. When the rotating ring rotates, it can wrap the tape around the outer wall of the liquid oxygen bursting tube.

[0024] S3. In addition, when wrapping tape around the outer wall of the liquid oxygen blasting tube, the worm gear drives multiple conveyor wheels to rotate through the cooperation of the second sprocket, the first sprocket and the chain. The conveyor wheels transport the liquid oxygen blasting tube to the left, and the rotating ring can accelerate the preparation of the liquid oxygen blasting tube by wrapping tape around the outer wall of the liquid oxygen blasting tube.

[0025] S4. Insert the liquid oxygen blasting pipe into a pre-drilled hole in the mine. One end of the injection pipe extends to the ground surface. Then, connect the injection pipe to one of the connecting pipes through the oxygen supply pipe. Open the pressure valve of the liquid oxygen tank to raise the liquid oxygen in the tank to a certain pressure. At this time, open the second valve and the first valve to supply liquid oxygen to the aluminum pipe. After the liquid oxygen has penetrated the combustible layer, close the second valve and the first valve and quickly disconnect the oxygen supply pipe from the injection pipe. Connect the power line of the igniter to the blasting device and complete the detonation through the detonator. The blasting has the characteristics of small vibration, weak damage to the surrounding environment, and the liquid oxygen is very volatile, which is relatively environmentally friendly. It does not leave any safety hazards for the few unexploded ruptured pipes.

[0026] S5. Additionally, when it is necessary to hoist the liquid oxygen blasting pipe to the mine, the connecting rope is passed through the connecting lug and connecting hole to make the bearing plate rotate. At this time, the worm gear can just abut against the rubber layer, thereby clamping and fixing the liquid oxygen tank. Then, the moving frame is hoisted to the designated position by a crane.

[0027] In this invention, a first clamping plate and a second clamping plate are fixed to both ends of the aluminum tube, and multiple combustible material layers are wrapped around the outer wall of the aluminum tube. A thin film bag is wrapped around the outer wall of the multiple combustible material layers, and a pearl cotton layer is wrapped around the outer wall of the thin film bag. Multiple permeation holes are provided inside the aluminum tube. By sequentially wrapping the combustible material layer, the thin film bag, and the pearl cotton layer around the outer wall of the aluminum tube, the liquid oxygen blasting tube can be easily prepared. The preparation process is very safe. In addition, when liquid oxygen is injected into the aluminum tube, the liquid oxygen permeates into the combustible material layer through the permeation holes. When detonated, the explosion has low vibration and weak destructive force to the surrounding environment, which is environmentally friendly.

[0028] In this invention, two connecting ears are fixed on both sides of the top of the movable frame, and two connecting holes are provided in each of the two bearing plates. The bearing plates are rotatably connected to the movable frame, and the connecting ears and connecting holes are connected by connecting ropes. By passing the connecting ropes through the connecting ears and connecting holes, the bearing plates are rotated, and the worm gear can then abut against the rubber layer, thereby clamping and fixing the liquid oxygen tank. This prevents the liquid oxygen tank from shaking when the movable frame and liquid oxygen tank are moved later.

[0029] In this invention, a fixing block is fixed to the top of the bearing plate, a rotating ring is slidably fitted inside the fixing block, a worm wheel is fixed to the outer wall of the rotating ring, and a worm is rotatably connected inside the fixing block, with the worm meshing with the worm wheel; the worm is driven to rotate by a motor, and the worm drives the rotating ring to rotate through the worm wheel. When the rotating ring rotates, it can wrap tape around the outer wall of the liquid oxygen blasting tube to further protect the liquid oxygen blasting tube and prevent the pearl cotton layer from being too loose, which would affect the later insertion of the liquid oxygen blasting tube into the mine;

[0030] In this invention, the outer wall of the aluminum tube is welded with multiple barbed plates, and one end of the barbed plate's pointed corner faces the first clamping plate. Multiple igniters are fitted onto the outer wall of the aluminum tube and moved toward the first clamping plate. The barbed plates do not obstruct the movement of the igniters. When the combustible layer moves in the opposite direction, the barbed plates can block the combustible layer, thereby preventing the combustible layer from loosening when it is fitted onto the outer wall of the aluminum tube.

[0031] In this invention, a liquid oxygen blasting tube is formed by sequentially placing a combustible material layer, a thin film bag, and a pearl cotton layer on the outer wall of an aluminum tube, and cooperating with a first clamping plate and a second clamping plate. Liquid oxygen is injected into the aluminum tube to detonate the liquid oxygen blasting tube. The blast has low vibration and weak destructive force on the surrounding environment. Moreover, liquid oxygen is highly volatile, making it relatively environmentally friendly. In addition, during the preparation of the liquid oxygen blasting tube, an adhesive tape layer can be automatically adhered to the outer wall of the liquid oxygen blasting tube by the rotation of a worm gear, ensuring the stability of the liquid oxygen blasting tube. The preparation is relatively simple and does not pose any danger. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of a liquid oxygen bursting tube according to Embodiment 1 of the present invention.

[0033] Figure 2 This is a three-dimensional cross-sectional exploded structure diagram of a liquid oxygen blasting tube according to Embodiment 1 of the present invention.

[0034] Figure 3 This is a three-dimensional cross-sectional view of the moving frame of a liquid oxygen bursting tube fabrication structure provided in Embodiment 1 of the present invention.

[0035] Figure 4 This is a three-dimensional structural diagram of the liquid oxygen bursting pipe manufacturing structure provided in Embodiment 1 of the present invention, showing how the support plate is closed to fix the liquid oxygen tank.

[0036] Figure 5 This is a three-dimensional exploded structural diagram of the moving frame, base plate, and bearing plate of a liquid oxygen bursting tube manufacturing structure provided in Embodiment 1 of the present invention.

[0037] Figure 6 This is a three-dimensional exploded structural diagram of the bearing plate, support plate, and fixing block of a liquid oxygen bursting pipe manufacturing structure provided in Embodiment 1 of the present invention.

[0038] Figure 7 This is a three-dimensional cross-sectional view of the fixing block and rotating ring of a liquid oxygen bursting tube manufacturing structure provided in Embodiment 1 of the present invention.

[0039] Figure 8This is a three-dimensional exploded structural diagram of the rotating ring, arc-shaped sliding plate, and fixed block of a liquid oxygen bursting tube manufacturing structure provided in Embodiment 1 of the present invention;

[0040] Figure 9 This is a three-dimensional structural diagram of the worm gear and conveyor wheel cooperation in a liquid oxygen bursting tube manufacturing structure provided in Embodiment 1 of the present invention;

[0041] Figure 10 This is a three-dimensional cross-sectional view of a liquid oxygen bursting tube fabrication structure provided in Embodiment 2 of the present invention.

[0042] In the diagram: 1. Liquid oxygen bursting tube; 2. Aluminum tube; 3. Permeation hole; 4. First clamping plate; 5. Second clamping plate; 6. Combustible material layer; 7. Ignition device; 8. Film bag; 9. Pearl cotton layer; 10. Adhesive tape layer; 11. Through hole; 12. Injection pipe; 13. Threaded platform; 14. First valve; 15. Oxygen delivery pipe; 16. Rubber sealing ring; 17. Moving frame; 18. Base plate; 19. Liquid oxygen tank; 20. Connecting pipe; 21. Second valve; 22. Bearing plate; 23. Support plate; 24. 25. Fixed block; 26. Rotating ring; 27. Base plate; 28. Rolled tape; 29. ​​Worm gear; 30. Second sprocket; 31. Base; 32. Rotating shaft; 33. Conveyor wheel; 34. First sprocket; 35. Chain; 36. Arc-shaped sliding plate; 37. Annular groove; 38. Annular groove; 39. Limiting block; 40. Connecting hole; 41. Connecting ear; 42. Rubber layer; 43. Connecting rope; 44. Barbed plate; 45. Internal threaded sleeve; 46. External threaded sleeve; 47. Pressure relief pipe. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0044] Example 1: Refer to Figures 1-9 A liquid oxygen blasting tube manufacturing structure is disclosed, which is used in the field of mining blasting. The liquid oxygen blasting tube 1 is composed of an aluminum tube 2, a first clamping plate 4, and a second clamping plate 5. The first clamping plate 4 and the second clamping plate 5 are respectively fixed to both ends of the aluminum tube 2 by bolts. The outer wall of the liquid oxygen blasting tube 1 is glued with an adhesive tape layer 10. A movable frame 17 is also disclosed. A base plate 18 is fixed inside the movable frame 17 by bolts. A liquid oxygen tank 19 is fixed to the top of the base plate 18.

[0045] Reference Figure 1 and Figure 2The outer wall of the aluminum tube 2 is covered with multiple combustible material layers 6. Two combustible material layers 6 on both sides abut against the inner walls of the first clamping plate 4 and the second clamping plate 5, respectively. The outer wall of the multiple combustible material layers 6 is covered with a film bag 8. The outer wall of the film bag 8 is covered with a pearl cotton layer 9. The two ends of the pearl cotton layer 9 and the film bag 8 abut against the inner walls of the first clamping plate 4 and the second clamping plate 5, respectively. The aluminum tube 2 is provided with multiple permeation holes 3. One of the combustible material layers 6 is provided with multiple igniters 7, and the power cord of the igniter 7 extends to the outside and is electrically connected to the detonator. The combustible material layer 6 can be toilet paper, and there is no limitation. By wrapping the outer wall of the aluminum tube 2 with combustible material layers 6, film bags 8 and pearl cotton layers 9 in sequence, the liquid oxygen blasting tube 1 can be easily prepared, and the preparation process is very safe.

[0046] Reference Figure 1 and Figure 2 An aluminum tube 2 has a through hole 11 at one end near the second clamping plate 5. A threaded platform 13 is provided inside the through hole 11, with internal threads on the inner wall and external threads on one side of the outer wall of the threaded platform 13. The through hole 11 and the threaded platform 13 are threaded together. An injection tube 12 is fixedly inserted through the threaded platform 13, with one end extending into the aluminum tube 2 and the other end penetrating the second clamping plate 5 and extending to one side of the second clamping plate 5. The injection tube 12 consists of two parts, each with a flared opening at a relative position. Each part is fitted with an internal threaded sleeve 45 and an external threaded sleeve 46. The threaded connection between the internal threaded sleeve 45 and the external threaded sleeve 46 allows for a detachable and fixed connection between the two parts of the injection tube 12. A first valve 14 is fitted onto the outer wall of the injection tube 12. An oxygen supply pipe 15 is fitted onto the end of the liquid pipe 12 away from the first clamping plate 4. A pressure relief pipe 47 is fixedly installed through one side of the second clamping plate 5. When injecting liquid oxygen, the pressure relief pipe 47 is used to expel air from the aluminum pipe 2. The pressure relief pipe 47 can be made of nylon or PU material. The liquid injection pipe 12 can be inserted into the aluminum pipe 2 through the cooperation of the through hole 11 and the threaded platform 13. When blasting is required, liquid oxygen is injected into the aluminum pipe 2 through the oxygen supply pipe 15 and the liquid injection pipe 12. After the oxygen injection is completed, the oxygen supply pipe 15 is cut off, and the ignition operation is carried out by the igniter 7. The blasting has the characteristics of small vibration, weak damage to the surrounding environment, and environmental protection (oxygen is extremely volatile). It does not leave any safety hazards for the very few unexploded fractured pipes (it is impossible for secondary blasting to occur due to external impact or pressure).

[0047] Reference Figure 2 The other side of the threaded platform 13 is fitted with a rubber sealing ring 16 that extends into the through hole 11; the rubber sealing ring 16 can increase the sealing performance of the through hole 11.

[0048] Reference Figures 3-7The blasting tube structure also includes adhesive structures on both sides of the movable frame 17, which are used to automatically adhere the tape layer 10 to the outer wall of the liquid oxygen blasting tube 1. The adhesive structure includes two bearing plates 22 respectively on both sides of the movable frame 17. Support plates 23 are bolted to the top of each bearing plate 22, and the support plates 23 are used to support and limit the liquid oxygen blasting tube 1. A fixing block 24 located between the two support plates 23 is bolted to the top of the bearing plate 22. A rotating ring 25 is slidably fitted inside the fixing block 24, and one end of the liquid oxygen blasting tube 1 passes through the rotating ring 25. The inner wall of the top of the rotating ring 25 is fixed with bolts. There are two substrates 26, and a roll of adhesive tape 27 is detachably connected between the two substrates 26. A worm wheel 28 is fixed to the outer wall of the rotating ring 25. A worm 29 is rotatably connected inside the fixing block 24, and the worm 29 meshes with the worm wheel 28. Two second sprockets 30 are fixedly sleeved on the outer wall of the worm 29. One end of the roll of adhesive tape 27 is attached to the outer wall of one end of the liquid oxygen blasting tube 1. The worm 29 is driven to rotate by a motor. The worm 29 drives the rotating ring 25 to rotate through the worm wheel 28. When the rotating ring 25 rotates, it can wrap the adhesive tape around the outer wall of the liquid oxygen blasting tube 1 to further protect the liquid oxygen blasting tube 1 and prevent the pearl cotton layer 9 from being too loose and affecting the later insertion of the liquid oxygen blasting tube 1 into the mine.

[0049] Reference Figure 6 , Figure 8 and Figure 9 The adhesive structure also includes two sets of conveying structures located on both sides of the top of the support plate 22. The two sets of conveying structures are located on both sides of the fixing block 24. The conveying structure includes multiple bases 31 fixed to the top of the support plate 22 by bolts. A rotating shaft 32 is rotatably connected inside the base 31. A conveying wheel 33 for conveying the liquid oxygen bursting tube 1 is fixedly sleeved on the outer wall of the rotating shaft 32. The outer wall of the conveying wheel 33 is provided with an annular groove 38 that matches the outer wall of the liquid oxygen bursting tube 1. One end of the rotating shaft 32 rotates through the base 31 and is fixedly connected to a first sprocket 34. The second sprocket 30 is connected to the multiple first sprockets 34 by a chain 35. When the tape is wrapped around the outer wall of the liquid oxygen bursting tube 1, the worm gear 29 drives the multiple conveying wheels 33 to rotate through the cooperation of the second sprocket 30, the first sprocket 34 and the chain 35. The conveying wheels 33 convey the liquid oxygen bursting tube 1 to the left. The rotating ring 25 can wrap the tape around the outer wall of the liquid oxygen bursting tube 1 to accelerate the preparation of the liquid oxygen bursting tube 1.

[0050] Reference Figure 7 and Figure 8The inner walls of the two sides of the fixed block 24 that are close to each other are fixed with arc-shaped sliding plates 36 by bolts. The two sides of the rotating ring 25 are provided with annular grooves 37, and the annular grooves 37 slide with the arc-shaped sliding plates 36. One end of the liquid oxygen tank 19 is provided with multiple connecting pipes 20, and the connecting pipes 20 cooperate with the oxygen delivery pipe 15. The outer wall of the connecting pipe 20 is fitted with a second valve 21. The cooperation between the arc-shaped sliding plates 36 and the annular grooves 37 can make the rotating ring 25 rotate smoothly and wrap the tape around the outer wall of the liquid oxygen bursting pipe 1. In addition, liquid oxygen can be injected into the aluminum pipe 2 through the connecting pipes 20 and the second valve 21.

[0051] Reference Figures 3-6 The rupture tube structure also includes a clamping structure located on the top of the movable frame 17 for fixing the liquid oxygen tank 19. The clamping structure includes two connecting ears 41 welded to both sides of the top of the movable frame 17. Each of the two support plates 22 has two connecting holes 40, and the connecting holes 40 correspond to the connecting ears 41. The support plates 22 are rotatably connected to the movable frame 17. The bottom of the support plates 22 has two limiting blocks 39 for limiting the support plates 22. The two limiting blocks 39 are fixedly connected to the inner walls of the two sides of the movable frame 17 on opposite sides. The connecting ears 41 and the connecting holes 40 are connected by connecting ropes 43. By passing the connecting ropes 43 through the connecting ears 41 and the connecting holes 40, the support plates 22 rotate, and the worm gear 28 can then abut against the rubber layer 42, thereby clamping and fixing the liquid oxygen tank 19. This prevents the liquid oxygen tank 19 from shaking when the movable frame 17 and the liquid oxygen tank 19 are moved later.

[0052] Example 2: Reference Figure 10 An improvement based on Example 1: Multiple barbed plates 44 are welded to the outer wall of the aluminum tube 2, with one end of the barbed plate 44 facing the first clamping plate 4; Multiple igniters 7 are fitted onto the outer wall of the aluminum tube 2 and moved toward the first clamping plate 4. The barbed plates 44 do not obstruct the movement of the igniters 7. When the combustible layer 6 moves in the opposite direction, the barbed plates 44 can block the combustible layer 6, thereby preventing the combustible layer 6 from loosening when it is fitted onto the outer wall of the aluminum tube 2.

[0053] A method for detonating a liquid oxygen blasting tube includes the following steps:

[0054] S1. Fix one end of the aluminum tube 2 to the first clamping plate 4. Then, put multiple combustible material layers 6 one by one on the outer wall of the aluminum tube 2, and the first clamping plate 4 limits the combustible material layers 6. Place an igniter 7 inside the multiple combustible material layers 6. The connection line of the igniter 7 extends to the outside. Wrap the multiple combustible material layers 6 with a film bag 8. Put the second clamping plate 5 on the other end of the aluminum tube 2. The second clamping plate 5 limits the pearl cotton layer 9, the film bag 8 and the combustible material layer 6 on the right side. Screw the threaded platform 13 into the through hole 11 to form the liquid oxygen blasting tube 1.

[0055] S2. Place the wrapped liquid oxygen bursting tube 1 on one of the support plates 23. At this time, one end of the liquid oxygen bursting tube 1 just passes through the rotating ring 25, and the liquid oxygen bursting tube 1 is located on multiple conveying wheels 33. Attach one end of the roll of adhesive tape 27 to the outer wall of one end of the liquid oxygen bursting tube 1. Drive the worm gear 29 to rotate through the motor. The worm gear 29 drives the rotating ring 25 to rotate through the worm wheel 28. When the rotating ring 25 rotates, it can wrap the adhesive tape around the outer wall of the liquid oxygen bursting tube 1.

[0056] S3. In addition, when the tape is wrapped around the outer wall of the liquid oxygen bursting tube 1, the worm gear 29 drives multiple conveyor wheels 33 to rotate through the cooperation of the second sprocket 30, the first sprocket 34 and the chain 35. The conveyor wheels 33 transport the liquid oxygen bursting tube 1 to the left, and the rotating ring 25 can accelerate the preparation of the liquid oxygen bursting tube 1 by wrapping the tape around the outer wall of the liquid oxygen bursting tube 1.

[0057] S4. Insert the liquid oxygen blasting pipe 1 into a pre-drilled hole in the mine. One end of the injection pipe 12 extends to the ground surface. Then, connect the injection pipe 12 to one of the connecting pipes 20 via the oxygen supply pipe 15. Open the pressure-boosting valve of the liquid oxygen tank 19 to raise the liquid oxygen in the tank to a certain pressure (generally 1.5 to 2.5 MPa is sufficient). Then, open the second valve 21 and the first valve 14 to supply liquid oxygen to the aluminum pipe 2. Once the liquid oxygen has penetrated the combustible layer 6, close the second valve 21 and the first valve 14, and quickly disconnect the oxygen supply pipe 15 from the injection pipe 12. Connect the power line of the igniter 7 to the blasting device, and detonate using the initiator. The blasting has low vibration, weak destructive force on the surrounding environment, and the liquid oxygen is highly volatile, making it relatively environmentally friendly. It leaves no safety hazards for any unexploded or ruptured pipes (secondary blasting is impossible due to external impact or pressure).

[0058] S5. Additionally, when it is necessary to hoist the liquid oxygen blasting pipe 1 to the mine, the connecting rope 43 passes through the connecting lug 41 and the connecting hole 40, causing the bearing plate 22 to rotate. At this time, the worm gear 28 can just abut against the rubber layer 42, thereby clamping and fixing the liquid oxygen tank 19. Then, the moving frame 17 is hoisted to the designated position by a crane.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A structure for manufacturing a liquid oxygen blasting tube, characterized in that, The liquid oxygen blasting tube (1) is composed of an aluminum tube (2), a first clamping plate (4), and a second clamping plate (5). The first clamping plate (4) and the second clamping plate (5) are respectively fixed to the two ends of the aluminum tube (2) by bolts. The outer wall of the liquid oxygen blasting tube (1) is covered with an adhesive tape layer (10). A movable frame (17) is provided, and a base plate (18) is fixed inside the movable frame (17) by bolts. A liquid oxygen tank (19) is fixed on the top of the base plate (18). An adhesive structure is set on both sides of the moving frame (17) to automatically glue the tape layer (10) to the outer wall of the liquid oxygen bursting tube (1); A clamping structure is provided on the top of the movable frame (17) for fixing the liquid oxygen tank (19); The outer wall of the aluminum tube (2) is covered with multiple combustible material layers (6). Two combustible material layers (6) located on both sides abut against the inner walls of the first card plate (4) and the second card plate (5) respectively. The outer walls of the multiple combustible material layers (6) are covered with film bags (8). The outer walls of the film bags (8) are covered with pearl cotton layers (9). The two ends of the pearl cotton layers (9) and the film bags (8) abut against the inner walls of the first card plate (4) and the second card plate (5) respectively. The aluminum tube (2) is provided with multiple permeation holes (3). One of the combustible material layers (6) is provided with multiple igniters (7), and the power cord of the igniter (7) extends to the outside and is electrically connected to the detonator. The aluminum tube (2) has a through hole (11) at one end near the second clamping plate (5). A threaded platform (13) is provided inside the through hole (11). The inner wall of the through hole (11) has an internal thread, and the outer wall of one side of the threaded platform (13) has an external thread. The through hole (11) is threadedly connected to the threaded platform (13). A liquid injection tube (12) is fixedly inserted through the threaded platform (13), with one end of the liquid injection tube (12) extending into the aluminum tube (2). The other end of the liquid injection tube (12) passes through the second clamping plate (5) and extends to one side of the second clamping plate (5). The injection tube (12) consists of two parts, each with a flared opening at a relative position. Each part is fitted with an internal threaded sleeve (45) and an external threaded sleeve (46). The injection tube (12) is detachably fixedly connected by the threaded connection of the internal threaded sleeve (45) and the external threaded sleeve (46). The outer wall of the injection tube (12) is fitted with a first valve (14). An oxygen delivery tube (15) is fitted at the end of the injection tube (12) away from the first clamping plate (4). A pressure relief tube (47) is fixedly installed through one side of the second clamping plate (5). The adhesive structure includes two bearing plates (22) respectively disposed on both sides of the movable frame (17). The top sides of the bearing plates (22) are fixed with support plates (23) by bolts. The support plates (23) are used to support and limit the liquid oxygen rupture tube (1). The top of the bearing plates (22) is fixed with a fixing block (24) located between the two support plates (23) by bolts. A rotating ring (25) is slidably fitted inside the fixing block (24). One end of the liquid oxygen rupture tube (1) passes through the rotating ring (25). The top inner wall of the rotating ring (25) is fixed with two base plates (26) by bolts. A roll of adhesive tape (27) is detachably connected between the two base plates (26). A worm wheel (28) is fixed on the outer wall of the rotating ring (25). A worm (29) is rotatably connected inside the fixing block (24). The worm (29) meshes with the worm wheel (28). Two second sprockets (30) are fixedly sleeved on the outer wall of the worm (29). The adhesive structure also includes two sets of conveying structures set on both sides of the top of the support plate (22). The two sets of conveying structures are located on both sides of the fixed block (24). The conveying structure includes multiple bases (31) fixed to the top of the support plate (22) by bolts. A rotating shaft (32) is rotatably connected inside the base (31). A conveying wheel (33) for conveying the liquid oxygen bursting tube (1) is fixedly sleeved on the outer wall of the rotating shaft (32). An annular groove (38) that matches the outer wall of the conveying wheel (33) is provided. One end of the rotating shaft (32) rotates through the base (31) and is fixedly connected to a first sprocket (34). The second sprocket (30) and the multiple first sprockets (34) are connected by a chain (35).

2. The liquid oxygen bursting tube manufacturing structure according to claim 1, characterized in that, The clamping structure includes two connecting ears (41) welded to the top sides of the movable frame (17). Two connecting holes (40) are provided in each of the two bearing plates (22), and the connecting holes (40) correspond to the connecting ears (41). The bearing plates (22) are rotatably connected in the movable frame (17). Two limiting blocks (39) are provided at the bottom of the bearing plates (22) to limit the bearing plates (22). The two limiting blocks (39) are fixedly connected to the inner walls of the two sides of the movable frame (17) on opposite sides. The connecting ears (41) and the connecting holes (40) are connected by connecting ropes (43).

3. The liquid oxygen bursting tube manufacturing structure according to claim 2, characterized in that, The inner walls of the two sides of the fixed block (24) that are close to each other are fixed with arc-shaped sliding plates (36) by bolts. The two sides of the rotating ring (25) are provided with annular grooves (37), and the annular grooves (37) and the arc-shaped sliding plates (36) are slidably engaged. One end of the liquid oxygen tank (19) is provided with multiple connecting pipes (20), and the connecting pipes (20) are engaged with the oxygen delivery pipe (15). The outer wall of the connecting pipe (20) is fitted with a second valve (21).

4. The liquid oxygen bursting tube manufacturing structure according to claim 3, characterized in that, The other side of the threaded platform (13) is fitted with a rubber sealing ring (16) that extends into the through hole (11).

5. The liquid oxygen bursting tube manufacturing structure according to claim 4, characterized in that, The outer wall of the aluminum tube (2) is welded with a plurality of barbed plates (44), and one end of the barbed plate (44) with a sharp corner faces the first clamping plate (4).

6. The blasting method for a liquid oxygen blasting tube fabrication structure according to claim 5, characterized in that, Includes the following steps: S1. Fix one end of the aluminum tube (2) to the first clamping plate (4), then put multiple combustible layers (6) on the outer wall of the aluminum tube (2) one by one, and the first clamping plate (4) limits the combustible layers (6). Place an igniter (7) inside the multiple combustible layers (6), and extend the connection line of the igniter (7) to the outside. Wrap the multiple combustible layers (6) with a film bag (8). Put the second clamping plate (5) on the other end of the aluminum tube (2). The second clamping plate (5) limits the pearl cotton layer (9), the film bag (8) and the combustible layer (6) on the right side. Screw the threaded plate (13) into the through hole (11) to form a liquid oxygen bursting tube (1). S2. Place the liquid oxygen bursting tube (1) that has been wrapped above on one of the support plates (23). At this time, one end of the liquid oxygen bursting tube (1) just passes through the rotating ring (25), and the liquid oxygen bursting tube (1) is located on multiple conveying wheels (33). Attach one end of the roll of tape (27) to the outer wall of one end of the liquid oxygen bursting tube (1). Drive the worm gear (29) to rotate through the motor. The worm gear (29) drives the rotating ring (25) to rotate through the worm wheel (28). When the rotating ring (25) rotates, it can wrap the tape around the outer wall of the liquid oxygen bursting tube (1). S3. In addition, when the tape is wrapped around the outer wall of the liquid oxygen bursting tube (1), the worm gear (29) drives multiple conveyor wheels (33) to rotate through the cooperation of the second sprocket (30), the first sprocket (34) and the chain (35). The conveyor wheels (33) transport the liquid oxygen bursting tube (1) to the left. The rotating ring (25) can accelerate the preparation of the liquid oxygen bursting tube (1) by wrapping the tape around the outer wall of the liquid oxygen bursting tube (1). S4. Insert the liquid oxygen blasting pipe (1) into the pre-drilled hole in the mine. Insert the liquid oxygen blasting pipe (1) into the hole. Extend one end of the injection pipe (12) to the ground surface. Then connect the injection pipe (12) to one of the connecting pipes (20) through the oxygen supply pipe (15). Open the pressure valve of the liquid oxygen tank (19) to raise the liquid oxygen in the tank to a certain pressure. At this time, open the second valve (21) and the first valve (14) to supply liquid oxygen to the aluminum pipe (2). After the liquid oxygen penetrates the combustible layer (6), close the second valve (21) and the first valve (14) after the liquid oxygen supply is completed. Quickly disconnect the oxygen supply pipe (15) from the injection pipe (12). Connect the power line of the igniter (7) to the blaster. Complete the detonation through the detonator. The blasting has small vibration, weak destructive force to the surrounding environment, and the liquid oxygen is very easy to volatilize, which is relatively environmentally friendly. It does not leave any safety hazards for the few unexploded rupture pipes. S5. In addition, when it is necessary to lift the liquid oxygen blasting pipe (1) to the mine, the connecting rope (43) is passed through the connecting lug (41) and the connecting hole (40) to make the bearing plate (22) rotate. At this time, the worm gear (28) can just abut against the rubber layer (42) so as to clamp and fix the liquid oxygen tank (19). Then, the moving frame (17) is lifted to the designated position by the crane.

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