Rock breaking device based on liquid oxygen transient phase change expansion

Abstract

The utility model discloses a rock breaking device based on liquid oxygen transient phase change expansion, including automatic filling machine and plastic outer sleeve tube, be provided with control interface on the automatic filling machine, the bottom of automatic filling machine is provided with the object plate, the upper end surface of object plate is provided with the evaporimeter, the both sides of evaporimeter are provided with first dowa jar and second dowa jar respectively, and the liquid oxygen is filled in between first dowa jar and second dowa jar. Compared with prior art, the first chute is opened in the conventional combustion-supporting medium column, the first medium protrusion and the second medium protrusion that can slide are arranged in the first chute, the first medium protrusion and the second medium protrusion can be controlled to slide out of the first chute by rotating the transmission disc, which improves the contact area of the combustible and the liquid oxygen, and further makes the combustible burn more fully, so that the liquid oxygen expands more rapidly, and the breaking effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of rock crushing devices, and in particular to a rock crushing device based on the transient phase change expansion of liquid oxygen. Background Technology

[0002] Currently, in open-pit earthwork excavation projects, the explosive blasting method relies heavily on the preparation of highly explosive and hazardous chemicals, severely limiting its rock-breaking capabilities. This makes storage, transportation, and use inconvenient, and the rock-breaking process is also lengthy. Another alternative is the gas expansion fracturing method, which includes carbon dioxide fracturing, nitrogen fracturing, and liquid oxygen fracturing. Liquid oxygen fracturing utilizes the combustion reaction of liquid oxygen with combustible materials to produce high-temperature, high-pressure carbon dioxide gas, causing the surrounding medium to expand and perform work, leading to rock fracturing. This method is characterized by its safety and high efficiency.

[0003] Although the liquid oxygen expansion fracturing method is safe and effective for open-pit mining, it still has shortcomings. For example, the combustible material in the plastic casing is generally columnar and its shape cannot be adjusted. This results in a small contact area between the combustible material and the liquid oxygen, leading to poor combustion and ultimately poor fracturing effect. Summary of the Invention

[0004] The purpose of this invention is to provide a rock crushing device based on the transient phase change expansion of liquid oxygen in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rock-breaking device based on the transient phase change expansion of liquid oxygen includes an automatic filling machine and a plastic outer sleeve. The automatic filling machine is equipped with a control interface, and a shelf is provided at the bottom of the automatic filling machine. An evaporator is provided on the upper surface of the shelf. A first Dewar and a second Dewar are respectively provided on both sides of the evaporator. Liquid oxygen is filled between the first Dewar and the second Dewar. A first liquid delivery pipe is provided between the first Dewar and the evaporator, and a second liquid delivery pipe is provided between the second Dewar and the evaporator. A first valve is provided at the connection between the first Dewar and the first liquid delivery pipe, and a second valve is provided at the connection between the second Dewar and the second liquid delivery pipe. A blasting mechanism is provided between the second Dewar and the plastic outer sleeve.

[0007] Preferably, the blasting mechanism includes an initiator and an ignition lead wire. A combustion-supporting medium shaft is disposed inside the plastic outer sleeve, and multiple combustion-supporting medium columns are sequentially arranged on the combustion-supporting medium shaft. A plug is disposed at the outlet of the plastic outer sleeve, and the plug is located at the top of the combustion-supporting medium shaft. An injection hole is provided on the combustion-supporting medium shaft. One end of the ignition lead wire is located inside the plastic outer sleeve, and multiple ignition heads are sequentially distributed on the ignition lead wire, each corresponding to one of the combustion-supporting medium columns. One end of the ignition lead wire is electrically connected to the initiator. One end of the second Dewar canister is provided with an injection pipe adapted to the injection hole, and an vent pipe is provided on the plug.

[0008] Preferably, the combustion-supporting medium column is provided with a plurality of first grooves evenly distributed, a second medium protrusion is provided in the first groove, and first medium protrusions are provided on both the upper and lower sides of the second medium protrusion. A second groove is provided on the inner wall of the first groove, and a third groove is provided on both the upper and lower sides of the second groove. Both of the third grooves are inclined. A sliding button is provided on the side of the first medium protrusion and the second medium protrusion. The first medium protrusion is slidably connected to the second groove through the sliding button, and the second medium protrusion is slidably connected to the third groove through the sliding button.

[0009] Preferably, a transmission plate is provided in the first groove, and a strip-shaped hole is formed on the transmission plate. A transmission block is provided on the side of the first medium protrusion and the second medium protrusion opposite to the transmission plate, and the transmission block and the strip-shaped hole are slidably connected.

[0010] Preferably, a fourth groove is provided on the upper end face of the combustion medium column, a slider is provided on the side of the transmission plate, a slide rod is provided in the fourth groove, the slide rod passes through the slider, and the slide rod and the slider are slidably connected.

[0011] Preferably, a transmission disc is rotatably connected to the top of the combustion medium column, the transmission disc has multiple transmission holes, the plug has multiple limiting holes, and a transmission shaft is provided on the transmission plate, with one end of the transmission shaft passing through the limiting hole and slidingly connected to the transmission hole.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] Compared with existing technologies, this application creates a first groove in a conventional combustion medium column. The first groove contains a first medium protrusion and a second medium protrusion that can slide. By rotating the transmission disc, the first medium protrusion and the second medium protrusion can be controlled to slide out of the first groove. This increases the contact area between the combustible material and the liquid oxygen, thereby making the combustible material burn more completely. This also makes the liquid oxygen expand more rapidly, improving the rupture effect. Attached Figure Description

[0014] Figure 1 A first-view structural schematic diagram of the crushing device provided according to an embodiment of the present utility model is shown;

[0015] Figure 2 A second-view structural schematic diagram of the crushing device provided according to an embodiment of the present utility model is shown;

[0016] Figure 3 A schematic diagram of a plastic outer shell structure according to an embodiment of the present invention is shown;

[0017] Figure 4 A schematic diagram of the combustion-supporting medium column structure provided according to an embodiment of the present invention is shown;

[0018] Figure 5 A schematic diagram of a first medium protrusion structure according to an embodiment of the present invention is shown;

[0019] Figure 6 A schematic diagram of the transmission disc structure according to an embodiment of the present utility model is shown;

[0020] Figure 7 A schematic diagram of the transmission plate structure provided according to an embodiment of the present invention is shown.

[0021] Legend:

[0022] 1. Automatic filling machine; 2. Shelf plate; 3. Evaporator; 4. First Dewar canister; 5. Second Dewar canister; 6. First infusion tube; 7. Second infusion tube; 8. First valve; 9. Second valve; 10. Control interface; 11. Injection tube; 12. Plastic outer sleeve; 13. Initiator; 14. Ignition lead wire; 15. Ignition head; 16. Packing; 17. Exhaust pipe; 18. Combustion medium shaft; 19. Combustion medium column; 20. First chute; 21. First medium protrusion; 22. Second medium protrusion; 23. Second chute; 24. Third chute; 25. Slide button; 26. Transmission plate; 27. Slider; 28. Slide rod; 29. ​​Fourth chute; 30. Injection hole; 31. Transmission disc; 32. Transmission hole; 33. Transmission shaft; 34. Strip hole; 35. Transmission block; 36. Limiting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-7 This utility model provides a technical solution:

[0025] A rock crushing device based on transient phase change expansion of liquid oxygen includes an automatic filling machine 1 and a plastic outer casing 12. The automatic filling machine 1 is equipped with a control interface 10. A shelf 2 is located at the bottom of the automatic filling machine 1, and an evaporator 3 is located on the upper surface of the shelf 2. A first Dewar 4 and a second Dewar 5 are respectively located on both sides of the evaporator 3. Liquid oxygen is filled between the first Dewar 4 and the second Dewar 5. A first liquid delivery pipe 6 is connected between the first Dewar 4 and the evaporator 3, and a second liquid delivery pipe 7 is connected between the second Dewar 5 and the evaporator 3. A first valve 8 is located at the connection between the first Dewar 4 and the first liquid delivery pipe 6. A second valve 9 is installed at the connection between the earthenware can 5 and the second infusion pipe 7. A bursting mechanism is installed between the second Dewar 5 and the plastic outer tube 12. When the automatic filling machine 1 is working, the first Dewar 4 inputs liquid oxygen into the evaporator 3. The evaporator 3 vaporizes the liquid oxygen, and the vaporized oxygen enters the second Dewar 5, pressurizing the liquid oxygen in the second Dewar 5. This causes the liquid oxygen in the second Dewar 5 to enter the plastic outer tube 12 through the injection pipe 11 until the plastic outer tube 12 is full of liquid oxygen. Then, the bursting mechanism vaporizes the liquid oxygen, increasing the pressure inside the plastic outer tube 12, and the plastic outer tube 12 explodes, which has a fracturing effect on the rock.

[0026] Specifically, such as Figure 3 and Figure 4 As shown, the blasting mechanism includes an initiator 13 and an ignition line 14. A combustion medium shaft 18 is installed inside the plastic outer tube 12, and multiple combustion medium columns 19 are sequentially arranged on the combustion medium shaft 18. A plug 16 is installed at the outlet of the plastic outer tube 12, located at the top of the combustion medium shaft 18. An injection hole 30 is provided on the combustion medium shaft 18. One end of the ignition line 14 is located inside the plastic outer tube 12, and multiple ignition heads 15 are sequentially distributed on the ignition line 14, each corresponding to a combustion medium column 19. One end of the ignition line 14 is electrically connected to the initiator 13. One end of the second Dewar 5 is provided with an injection pipe 11 adapted to the injection hole 30. An exhaust pipe 17 is provided on the plug 16. Both the combustion medium shaft 18 and the combustion medium columns 19 are made of compressed paper and are relatively hard.

[0027] Specifically, such as Figure 5 and Figure 6As shown, a plurality of first grooves 20 are evenly provided on the combustion medium column 19. A second medium protrusion 22 is provided in the first groove 20. A first medium protrusion 21 is provided on both the upper and lower sides of the second medium protrusion 22. A second groove 23 is provided on the inner wall of the first groove 20. A third groove 24 is provided on both the upper and lower sides of the second groove 23. Both third grooves 24 are inclined. A sliding button 25 is provided on the side of the first medium protrusion 21 and the second medium protrusion 22. The first medium protrusion 21 is slidably connected to the second groove 23 through the sliding button 25. The second medium protrusion 22 is slidably connected to the third groove 24 through the sliding button 25. When the second medium protrusion 22 and the first medium protrusion 21 slide out of the first groove 20, the second medium protrusion 22 and the first medium protrusion 21 are in a trumpet shape. In this way, the contact area between the second medium protrusion 22 and the first medium protrusion 21 and the liquid oxygen is increased, thereby improving the combustion efficiency.

[0028] Specifically, such as Figure 6 and Figure 7 As shown, a transmission plate 26 is provided in the first groove 20, and a strip hole 34 is provided on the transmission plate 26. Transmission blocks 35 are provided on the side of the first medium protrusion 21 and the second medium protrusion 22 opposite to the transmission plate 26. The transmission blocks 35 and the strip hole 34 are slidably connected. A fourth groove 29 is provided on the upper end face of the combustion medium column 19. A slider 27 is provided on the side of the transmission plate 26. A slider 28 is provided in the fourth groove 29. The slider 28 passes through the slider 27. The slider 28 and the slider 27 are slidably connected. A transmission disc is rotatably connected to the top of the combustion medium column 19. 31. The transmission disc 31 has multiple transmission holes 32, the plug 16 has multiple limiting holes 36, and the transmission plate 26 is provided with a transmission shaft 33. One end of the transmission shaft 33 passes through the limiting hole 36 and is slidably connected to the transmission hole 32. The two ends of the transmission hole 32 are at different distances from the transmission disc 31. When the transmission disc 31 is rotated, the transmission disc 31 drives the transmission shaft 33 to move from one end of the transmission hole 32 to the other end. The transmission shaft 33 drives the transmission plate 26 to move in the first slide groove 20 until the second medium protrusion 22 and the first medium protrusion 21 slide out of the first slide groove 20.

[0029] Working principle: During detonation preparation, the automatic filling machine 1 is started. The liquid oxygen in the first Dewar canister 4 first enters the evaporator 3. The evaporator 3 vaporizes the liquid oxygen and inputs it into the second Dewar canister 5. Then, under pressure, the liquid oxygen in the second Dewar canister 5 enters the plastic outer sleeve 12 through the injection pipe 11 until the combustion medium column 19 is submerged. At this time, the detonator 13 is started, and the ignition lead 14 ignites the ignition head 15. The ignition head 15 ignites the combustion medium column 19. The combustion of the combustion medium column 19 releases a large amount of heat, vaporizes the liquid oxygen, breaks through the plastic outer sleeve 12, and then breaks through the rock, thus achieving the purpose of fracturing the rock.

[0030] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily 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 is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rock crushing device based on transient phase change expansion of liquid oxygen, comprising an automatic filling machine (1) and a plastic outer casing (12), wherein the automatic filling machine (1) is provided with a control interface (10), characterized in that, The automatic filling machine (1) is provided with a shelf (2) at the bottom. An evaporator (3) is provided on the upper surface of the shelf (2). A first Dewar jar (4) and a second Dewar jar (5) are provided on both sides of the evaporator (3). Liquid oxygen is filled between the first Dewar jar (4) and the second Dewar jar (5). A first infusion pipe (6) is provided between the first Dewar jar (4) and the evaporator (3). A second infusion pipe (7) is provided between the second Dewar jar (5) and the evaporator (3). A first valve (8) is provided at the connection between the first Dewar jar (4) and the first infusion pipe (6). A second valve (9) is provided at the connection between the second Dewar jar (5) and the second infusion pipe (7). A bursting mechanism is provided between the second Dewar jar (5) and the plastic outer tube (12).

2. The rock crushing device based on transient phase change expansion of liquid oxygen according to claim 1, characterized in that, The blasting mechanism includes an initiator (13) and an ignition lead wire (14). A combustion-supporting medium shaft (18) is installed inside the plastic outer sleeve (12). Multiple combustion-supporting medium columns (19) are sequentially arranged on the combustion-supporting medium shaft (18). A plug (16) is installed at the outlet of the plastic outer sleeve (12). The plug (16) is located at the top of the combustion-supporting medium shaft (18). An injection hole (30) is provided on the combustion-supporting medium shaft (18). The ignition... One end of the ignition lead wire (14) is located inside the plastic outer sleeve (12). The ignition lead wire (14) has multiple ignition heads (15) distributed in sequence. The ignition heads (15) correspond one-to-one with the combustion medium column (19). One end of the ignition lead wire (14) is electrically connected to the detonator (13). One end of the second Dewar canister (5) is provided with an injection pipe (11) adapted to the injection hole (30). The plug (16) is provided with an exhaust pipe (17).

3. The rock crushing device based on transient phase change expansion of liquid oxygen according to claim 2, characterized in that, The combustion medium column (19) is uniformly provided with a plurality of first grooves (20), a second medium protrusion (22) is provided in the first groove (20), a first medium protrusion (21) is provided on both the upper and lower sides of the second medium protrusion (22), a second groove (23) is provided on the inner wall of the first groove (20), a third groove (24) is provided on both the upper and lower sides of the second groove (23), and both third grooves (24) are inclined. A sliding button (25) is provided on the side of the first medium protrusion (21) and the second medium protrusion (22). The first medium protrusion (21) is slidably connected to the second groove (23) through the sliding button (25), and the second medium protrusion (22) is slidably connected to the third groove (24) through the sliding button (25).

4. The rock crushing device based on transient phase change expansion of liquid oxygen according to claim 3, characterized in that, A transmission plate (26) is provided in the first groove (20), and a strip hole (34) is provided on the transmission plate (26). A transmission block (35) is provided on the side of the first medium protrusion (21) and the second medium protrusion (22) opposite to the transmission plate (26). The transmission block (35) and the strip hole (34) are slidably connected.

5. A rock crushing device based on transient phase change expansion of liquid oxygen according to claim 4, characterized in that, The upper end face of the combustion medium column (19) is provided with a fourth groove (29), the side of the transmission plate (26) is provided with a slider (27), a slide rod (28) is provided in the fourth groove (29), the slide rod (28) passes through the slider (27), and the slide rod (28) and the slider (27) are slidably connected.

6. A rock crushing device based on transient phase change expansion of liquid oxygen according to claim 2, characterized in that, The top of the combustion medium column (19) is rotatably connected to a transmission disc (31), the transmission disc (31) has multiple transmission holes (32), the plug (16) has multiple limiting holes (36), the transmission plate (26) is provided with a transmission shaft (33), one end of the transmission shaft (33) passes through the limiting hole (36) and the transmission hole (32) and is slidably connected.

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