Explosive-dry ice synergistic rock breaking blasting tube

Abstract

The application discloses an explosive-dry ice cooperative rock breaking blasting pipe and relates to the technical field of blasting pipes.The blasting pipe comprises an outer pipe, an inner pipe, an igniting element and two left-right symmetrical adjusting elements, the adjusting element comprises an elastic plate, the elastic plate is attached to the inner sidewall of the outer pipe on both sides, a threaded rod is threadedly connected to the outside of the elastic plate, and the threaded rod is movably connected to the outer pipe through a bearing.Two groups of symmetrical adjusting elements are arranged, the elastic plate is elastically deformed by rotating the threaded rod, the internal volume of the dry ice cavity is changed, the dry ice with a corresponding volume is matched according to the explosive loading, the explosive and the dry ice are flexibly adjusted in proportion, the cooperative rock breaking effect of the explosive and the dry ice is ensured, a complete set of blasting pipes does not need to be replaced, the generality is high, a temperature insulation cavity is arranged between the explosive pipe and the partition pipe, the explosive cavity and the dry ice cavity are mutually isolated, the low temperature of the dry ice is prevented from being transmitted to the explosive, the explosive is prevented from being affected by the low temperature and being refused to explode, and the reliability and the safety of blasting operation are improved.

Description

Technical Field

[0001] This invention relates to the field of blasting tube technology, and in particular to a blasting tube for rock breaking using explosives and dry ice in synergy. Background Technology

[0002] In mining and geotechnical excavation projects, the synergistic rock-breaking effect of explosives and dry ice combines the advantages of explosive impact and dry ice vaporization and pressurization, reducing the amount of explosives used, minimizing flyrock and shockwave hazards, and improving rock-breaking efficiency. However, existing synergistic rock-breaking blasting tubes have fixed structures, and the volumes of the explosive chamber and dry ice chamber are not adjustable. Different specifications of blasting tubes need to be replaced for different rock conditions, resulting in poor versatility.

[0003] Traditional blasting tubes lack an effective thermal insulation structure between the explosive and dry ice. The low temperature of the dry ice can easily be conducted to the explosive, causing low-temperature misfires and posing a risk of blasting failure. Most blasting tubes are one-piece structures, meaning the size of the explosive chamber cannot be changed as needed, and adjusting the explosive-dry ice ratio is cumbersome. Furthermore, the fixed volume of the dry ice chamber makes it impossible to match the appropriate volume of dry ice to the explosive loading, hindering the optimal synergistic ratio of explosive and dry ice and affecting rock-breaking efficiency. The devices are also inconvenient to assemble and disassemble, with internal components difficult to remove and replace, resulting in high operating costs.

[0004] Therefore, it is necessary to propose a blasting tube for rock breaking using explosives and dry ice in synergy to solve the aforementioned existing problems. Summary of the Invention

[0005] This invention provides a blasting tube for rock breaking using explosives and dry ice in synergy, in order to solve the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, the present invention provides a blasting tube for rock breaking with explosive-dry ice synergy, comprising an outer tube, an inner tube, a detonator, and two adjusting members symmetrically distributed on the left and right. The inner tube is located inside the outer tube, the two adjusting members are respectively installed on both sides inside the outer tube, the inner tube is located between the two adjusting members, and the detonator is located inside the inner tube and extends to the top of the outer tube. The adjusting component includes an elastic plate, both sides of which are attached to the inner wall of the outer tube. A threaded rod is threadedly connected to the outer side of the elastic plate. The threaded rod is movably connected to the outer tube through a bearing. An internal hexagonal groove is provided at the end of the threaded rod.

[0007] Preferably, the outer tube consists of an outer tube body, a lower cover, and an upper cover. The upper cover and the lower cover are threaded to the top and bottom of the outer tube body, respectively. The inner tube and the adjusting component are both located inside the outer tube body. Adaptive grooves are provided on both sides inside the outer tube body.

[0008] Preferably, a reinforcing rib is fixedly connected to the outer side of the elastic plate, the connection between the elastic plate and the threaded rod is located in the middle of the reinforcing rib, the threaded rod passes through the reinforcing rib, and the reinforcing rib is adapted to the fitting groove.

[0009] Preferably, the inner wall of the adapter groove is provided with a mounting hole, and the bearing is fixedly embedded inside the mounting hole.

[0010] Preferably, the inner tube includes a connecting seat, which is fixedly connected to the top of the lower cover. An explosive tube and a partition tube are fixedly connected to the top of the connecting seat. The explosive tube is located inside the partition tube. The interior of the explosive tube is configured as an explosive chamber. A temperature insulation chamber is configured between the explosive tube and the partition tube. A dry ice chamber is configured between the partition tube, the outer tube, and the two elastic plates.

[0011] Preferably, a first threaded head is fixedly connected to the bottom of the connecting seat, and a second threaded groove is provided on the top of the connecting seat. The first threaded head is threadedly connected to the inside of the second threaded groove, and the connecting seat and the explosive tube are fixedly connected through the first threaded head and the second threaded groove.

[0012] Preferably, the partition tube is sleeved on the top of the connecting seat, and multiple bolts are connected through the bottom of the outer end of the partition tube. The connecting seat and the partition tube are fixedly connected by bolts.

[0013] Preferably, a second threaded head is fixedly connected to the bottom of the connecting seat, and a first threaded groove is opened on the top of the lower cover. The second threaded head is threadedly connected inside the first threaded groove, and the inner tube is fixedly connected to the outer tube through the second threaded head and the first threaded groove.

[0014] Preferably, the detonator includes a wire and an electric detonator, the wire being located inside the explosive chamber, and the electric detonator penetrating the upper cover and extending above the outer tube.

[0015] Preferably, a sealing element is fixedly connected to the bottom of the upper cover. The sealing element includes a sealing gasket, and a sealing ring is fixedly connected to the bottom of the sealing gasket. The sealing gasket is fixedly connected to the bottom of the upper cover and presses against the top of the explosive tube and the partition tube. The sealing ring is sleeved on the top of the explosive tube.

[0016] Compared with related technologies, the explosive-dry ice synergistic rock-breaking blasting tube provided by the present invention has the following beneficial effects: 1. Two sets of symmetrical adjustment components are set up. The external rotation of the threaded rod can drive the elastic plate to deform elastically, thereby changing the internal volume of the dry ice chamber. The corresponding volume of dry ice can be matched according to the explosive loading amount, so as to realize the flexible adjustment of the ratio of explosive and dry ice, ensuring the synergistic rock breaking effect of the two. There is no need to replace the entire set of blasting tubes, which is highly versatile.

[0017] 2. An insulation chamber is installed between the explosive tube and the partition tube to isolate the explosive chamber from the dry ice chamber, preventing the low temperature of the dry ice from being transmitted to the explosive, avoiding the explosive from being affected by the low temperature and causing misfire, thus improving the reliability and safety of blasting operations.

[0018] 3. Both the outer and inner tubes adopt a split structure assembled with threads and bolts. The explosive tube can be disassembled and replaced, which can change the capacity of the explosive chamber and adapt to different charge amounts. Each component is easy to disassemble and assemble, and damaged parts can be replaced individually, reducing the cost of use.

[0019] 4. The bottom of the top cover is equipped with a sealing element to independently seal the explosive chamber, the insulation chamber, and the dry ice chamber, reducing the premature evaporation of dry ice and ensuring a stable internal environment for the explosive charge in the blasting tube.

[0020] 5. The threaded rod has an internal hexagonal groove at the end, which allows for direct adjustment of the dry ice chamber volume using tools outside the blasting tube without disassembling the tube. The on-site charging and debugging operation is simple and suitable for use in mining rock and soil blasting construction sites. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of section A in the middle; Figure 4 This is a top view of the internal structure of the outer tube of the present invention; Figure 5 This is an exploded view of the outer tube of the present invention; Figure 6 This is a schematic diagram of the sealing element structure of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the inner tube of the present invention; Figure 8 This is a schematic diagram of the connector structure of the present invention; Figure 9 This is a schematic diagram of the adjusting component structure of the present invention.

[0022] The following are the labels in the diagram: 1. Outer tube, 11. Outer tube body, 12. Lower cover, 13. Upper cover, 14. Adaptor groove, 15. Mounting hole, 16. First threaded groove, 2. Inner tube, 21. Connecting seat, 22. Explosive tube, 23. Isolation tube, 24. Bolt, 25. First threaded head, 26. Second threaded groove, 27. Second threaded head, 3. Adjusting component, 31. Elastic plate, 32. Reinforcing rib, 33. Threaded rod, 34. Bearing, 35. Internal hexagonal groove, 4. Detonator, 41. Wire, 42. Electric detonator, 5. Sealing component, 51. Sealing gasket, 52. Sealing ring, 6. Explosive chamber, 7. Insulation chamber, 8. Dry ice chamber. Detailed Implementation

[0023] Please see Figure 1-9 The technical solution provided by the present invention specifically includes the following embodiments:

[0024] A blasting tube for rock breaking using explosive-dry ice synergy includes an outer tube 1, an inner tube 2, a detonator 4, and two symmetrically distributed adjusting members 3. The inner tube 2 is located inside the outer tube 1, and the two adjusting members 3 are respectively installed on both sides inside the outer tube 1. The inner tube 2 is located between the two adjusting members 3, and the detonator 4 is located inside the inner tube 2 and extends above the outer tube 1.

[0025] The adjusting component 3 includes an elastic plate 31, both sides of which are attached to the inner wall of the outer tube 1. A threaded rod 33 is threadedly connected to the outer side of the elastic plate 31. The threaded rod 33 is movably connected to the outer tube 1 through a bearing 34. An internal hexagonal groove 35 is provided at the end of the threaded rod 33.

[0026] The outer tube 1 consists of an outer tube body 11, a lower cover 12, and an upper cover 13. The upper cover 13 and the lower cover 12 are threaded to the top and bottom of the outer tube body 11, respectively. The inner tube 2 and the adjusting component 3 are both located inside the outer tube body 11. Adaptive grooves 14 are provided on both sides inside the outer tube body 11. The outer tube 1 is assembled from the split outer tube body 11, the lower cover 12, and the upper cover 13, which makes assembly more convenient.

[0027] A reinforcing rib 32 is fixedly connected to the outer side of the elastic plate 31. The connection between the elastic plate 31 and the threaded rod 33 is located in the middle of the reinforcing rib 32. The threaded rod 33 passes through the reinforcing rib 32. The reinforcing rib 32 is adapted to the fitting groove 14. The reinforcing rib 32 can improve the rigidity of the elastic plate 31. In this way, when the threaded rod 33 rotates and drives the elastic plate 31 to move at the central axis, the elastic plate 31 can be more stable when it bends and deforms.

[0028] The inner wall of the adapter groove 14 is provided with a mounting hole 15. The bearing 34 is fixedly embedded in the mounting hole 15. When the elastic plate 31 is bent to the maximum extent and completely attached to the inner wall of the outer tube 11, the reinforcing rib 32 can be embedded in the adapter groove 14. At this time, the capacity of the dry ice chamber 8 is the largest. The mounting hole 15 allows the internal hexagonal groove 35 at the end of the threaded rod 33 to be operated from outside the outer tube 1, and the bearing 34 facilitates the rotation of the threaded rod 33.

[0029] The inner tube 2 includes a connecting seat 21, which is fixedly connected to the top of the lower cover 12. An explosive tube 22 and a partition tube 23 are fixedly connected to the top of the connecting seat 21. The explosive tube 22 is located inside the partition tube 23. An explosive chamber 6 is set inside the explosive tube 22. A heat insulation chamber 7 is set between the explosive tube 22 and the partition tube 23. A dry ice chamber 8 is set between the partition tube 23 and the outer tube 1 and the two elastic plates 31.

[0030] The bottom of the connecting seat 21 is fixedly connected to a first threaded head 25, and the top of the connecting seat 21 is provided with a second threaded groove 26. The first threaded head 25 is threadedly connected to the inside of the second threaded groove 26. The connecting seat 21 and the explosive tube 22 are fixedly connected through the first threaded head 25 and the second threaded groove 26.

[0031] The partition tube 23 is sleeved on the top of the connecting seat 21, and multiple bolts 24 are connected through the bottom of the outer end of the partition tube 23. The connecting seat 21 and the partition tube 23 are fixedly connected by the bolts 24.

[0032] The explosive chamber 6 is used to fill the required amount of explosives and the electric detonator 41 for detonating the explosives. By changing the explosive tube 22 of different sizes, explosive chambers 6 with different capacities can be obtained, which can then be used to fill the required amount of explosives. Then, the inner tube 2 is screwed and fixed inside the outer tube 1 by the first threaded head 25. At this time, the amount of explosives is known. It is only necessary to obtain the required amount of dry ice according to the ratio of explosives to dry ice, and then fill the dry ice into the dry ice chamber 8. In order to make the dry ice chamber 8 just adjust to the required capacity of dry ice, the capacity of the dry ice chamber 8 can be adjusted by adjusting the adjusting part 3 while filling the dry ice. For example, rotating the threaded rod 33 makes the elastic plate 31 gradually bend away from the inner tube 2, thereby gradually increasing the capacity of the dry ice chamber 8 until the dry ice is completely filled into the dry ice chamber 8. At this time, the dry ice is completely surrounding the outside of the explosives, and the synergistic effect of the two is better. It is worth mentioning that there is also a heat insulation chamber 7 between the explosives and the dry ice. This prevents the low temperature of the dry ice from directly affecting the explosives through the tube wall, thus preventing the problem of low temperature misfire of the explosives.

[0033] The inner tube 2 also adopts a separate assembly structure of connecting seat 21, explosive tube 22, and partition tube 23, which makes it easier to replace explosive tubes 22 of different sizes and models to obtain the explosive chamber 6 of the required capacity.

[0034] The bottom of the connecting seat 21 is fixedly connected to a second threaded head 27, and the top of the lower cover 12 is provided with a first threaded groove 16. The second threaded head 27 is threaded into the first threaded groove 16. The inner tube 2 is fixedly connected to the outer tube 1 through the second threaded head 27 and the first threaded groove 16. The inner tube 2 can be fixedly connected to the inside of the outer tube 1 through the second threaded head 27 and the first threaded groove 16.

[0035] The detonator 4 includes a wire 41 and an electric detonator 42. The wire 41 is located inside the explosive chamber 6, and the electric detonator 42 passes through the upper cover 13 and extends to the top of the outer tube 1. One end of the wire 41 is connected to a control device to control the electric detonator 42 to detonate the explosive.

[0036] The bottom of the upper cover 13 is fixedly connected to a sealing element 5, which includes a sealing gasket 51. A sealing ring 52 is fixedly connected to the bottom of the sealing gasket 51. The sealing gasket 51 is fixedly connected to the bottom of the upper cover 13 and presses against the top of the explosive tube 22 and the partition tube 23. The sealing ring 52 is sleeved on the top of the explosive tube 22. When the upper cover 13 is closed, the sealing element 5 seals the explosive chamber 6, the heat insulation chamber 7 and the dry ice chamber 8 respectively.

[0037] Working principle:

[0038] When making the blasting tube, the required proportions of explosives and dry ice are needed. The explosive chamber 6 is used to fill the explosives, and the dry ice chamber 8 is used to fill the dry ice. By replacing the inner tube 2 with explosive tubes 22 of different sizes and models, the explosive chamber 6 of the required capacity can be obtained, and then the required amount of explosives can be filled. While filling the explosive chamber 6 with explosives, wires 41 are also pre-embedded inside the explosives. Then the inner tube 2 is spirally fixed to the lower cover 12 inside the outer tube 1.

[0039] At this point, the amount of explosive in the explosive chamber 6 is known. A certain proportion of dry ice needs to be filled into the dry ice chamber 8. The capacity of the dry ice chamber 8 can be adjusted by adjusting the position of the two elastic plates 31 so that the dry ice in the dry ice chamber 8 can just fill it. When adjusting the position of the elastic plates 31, use tools such as hexagonal sockets to insert into the hexagonal slot 35 of the threaded rod 33 from the outside of the outer tube 1 to rotate the threaded rod 33, thereby driving the elastic plates 31 to move. Since the edge of the elastic plates 31 is pressed against the inner wall of the outer tube 11, the elastic plates 31 can undergo elastic deformation to change the capacity of the dry ice chamber 8. Finally, the required amount of dry ice is filled into the dry ice chamber 8.

[0040] After the explosive and dry ice have been filled into the explosive chamber 6 and dry ice chamber 8 in the blasting tube according to the required ratio, the explosive and dry ice are separated by the heat insulation chamber 7, so that the temperature between the two will not interfere with each other. In particular, the low temperature of the dry ice will not affect the explosive. Finally, the top cap 13 is put on to complete the blasting tube.

Claims

1. A blasting tube for rock breaking using explosives and dry ice synergistically, characterized in that: It includes an outer tube (1), an inner tube (2), a detonator (4), and two symmetrically distributed adjusting members (3). The inner tube (2) is located inside the outer tube (1), and the two adjusting members (3) are respectively installed on both sides inside the outer tube (1). The inner tube (2) is located between the two adjusting members (3), and the detonator (4) is located inside the inner tube (2) and extends to the top of the outer tube (1). The adjusting component (3) includes an elastic plate (31), both sides of which are attached to the inner wall of the outer tube (1). A threaded rod (33) is threadedly connected to the outer side of the elastic plate (31). The threaded rod (33) is movably connected to the outer tube (1) through a bearing (34). An internal hexagonal groove (35) is provided at the end of the threaded rod (33).

2. The explosive-dry ice synergistic rock-breaking blasting tube according to claim 1, characterized in that, The outer tube (1) consists of an outer tube body (11), a lower cover (12) and an upper cover (13). The upper cover (13) and the lower cover (12) are threaded to the top and bottom of the outer tube body (11), respectively. The inner tube (2) and the adjusting component (3) are both located inside the outer tube body (11). Adaptor grooves (14) are provided on both sides inside the outer tube body (11).

3. The explosive-dry ice synergistic rock-breaking blasting tube according to claim 2, characterized in that, The elastic plate (31) is fixedly connected to a reinforcing rib (32) on the outside. The connection between the elastic plate (31) and the threaded rod (33) is located in the middle of the reinforcing rib (32). The threaded rod (33) passes through the reinforcing rib (32). The reinforcing rib (32) is adapted to the adapter groove (14).

4. The explosive-dry ice synergistic rock-breaking blasting tube according to claim 2, characterized in that, The inner wall of the adapter groove (14) is provided with a mounting hole (15), and the bearing (34) is fixedly embedded in the mounting hole (15).

5. The explosive-dry ice synergistic rock-breaking blasting tube according to claim 2, characterized in that, The inner tube (2) includes a connecting seat (21), which is fixedly connected to the top of the lower cover (12). The top of the connecting seat (21) is fixedly connected to an explosive tube (22) and a partition tube (23). The explosive tube (22) is located inside the partition tube (23). The interior of the explosive tube (22) is provided as an explosive chamber (6). A heat insulation chamber (7) is provided between the explosive tube (22) and the partition tube (23). A dry ice chamber (8) is provided between the partition tube (23) and the outer tube (1) and the two elastic plates (31).

6. The explosive-dry ice synergistic rock-breaking blasting tube according to claim 5, characterized in that, The bottom of the connector (21) is fixedly connected to a first threaded head (25), and the top of the connector (21) is provided with a second threaded groove (26). The first threaded head (25) is threadedly connected inside the second threaded groove (26). The connector (21) and the explosive tube (22) are fixedly connected through the first threaded head (25) and the second threaded groove (26).

7. A blasting tube for rock breaking using explosives and dry ice synergy according to claim 5, characterized in that, The partition tube (23) is sleeved on the top of the connecting seat (21), and multiple bolts (24) are connected through the bottom of the outer end of the partition tube (23). The connecting seat (21) and the partition tube (23) are fixedly connected by the bolts (24).

8. A blasting tube for rock breaking using explosives and dry ice synergy as described in claim 5, characterized in that, The bottom of the connecting seat (21) is fixedly connected to a second threaded head (27), and the top of the lower cover (12) is provided with a first threaded groove (16). The second threaded head (27) is threadedly connected inside the first threaded groove (16), and the inner tube (2) is fixedly connected to the outer tube (1) through the second threaded head (27) and the first threaded groove (16).

9. A blasting tube for rock breaking using explosives and dry ice synergy according to claim 5, characterized in that, The detonator (4) includes a wire (41) and an electric detonator (42). The wire (41) is located inside the explosive chamber (6), and the electric detonator (42) passes through the upper cover (13) and extends above the outer tube (1).

10. A blasting tube for rock breaking using explosives and dry ice synergy according to claim 5, characterized in that, The bottom of the upper cover (13) is fixedly connected to a sealing element (5), the sealing element (5) includes a sealing gasket (51), the bottom of the sealing gasket (51) is fixedly connected to a sealing ring (52), the sealing gasket (51) is fixedly connected to the bottom of the upper cover (13) and pressed on the top of the explosive tube (22) and the partition tube (23), and the sealing ring (52) is sleeved on the top of the explosive tube (22).

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