Waterproof mine blasting device
By using multi-layer plastic film and sealing structure in mining blasting devices, combined with counterweight sealing caps and high-pressure helium filling, the sealing and safety issues of existing devices are solved, achieving efficient waterproofing and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI JIANGYANG ENG BLASTING CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-08-04
AI Technical Summary
Existing waterproof mining blasting devices suffer from high prices, long production cycles, limited single-use explosive capacity, significant flyrock and vibration during blasting, and potential safety hazards.
A sealing structure consisting of a first soft thick-walled plastic membrane, a second soft thick-walled plastic membrane, and a third soft thick-walled plastic membrane is adopted. Combined with a counterweight sealing cap, a sealing ring, and a sealing sleeve, an overall seal is formed to ensure the sealing performance of the detonating tube. The sealing effect is further improved by filling the cavity with high-pressure helium gas.
The equipment achieves high sealing performance and convenient structure, preventing liquid from entering the explosive charge, reducing the risk of flying rocks and vibration during blasting, and improving safety and cost control.
Smart Images
Figure CN224593840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blasting device technology, specifically a waterproof mining blasting device. Background Technology
[0002] During open-pit mining operations, rainwater seepage or water vein seepage often occurs in the blast holes. Since the mixed ammonium nitrate explosives used are susceptible to rainwater inactivation, the current practice is to use waterproof mixed emulsion explosives for blasting to address this issue.
[0003] However, waterproof emulsion explosives have many disadvantages, such as high price, long production cycle, and limited supply of explosives at one time. In addition, their explosive detonation velocity and density are relatively high. If the amount of explosives is too small in the weak ore body, the sealing length will be too long, which will easily generate more large pieces and foundations, increasing the cost of secondary construction. If the amount of explosives is sufficient, the explosive power will be greater due to the weak ore body, which will easily generate flying rocks and blasting vibrations. This is not only detrimental to cost control, but also brings safety hazards to production and construction. Therefore, we propose a waterproof mining blasting device. Utility Model Content
[0004] To address the shortcomings of existing waterproof mining blasting devices, this utility model provides a waterproof mining blasting device that is assembled into a whole by a first soft thick-walled plastic film, a second soft thick-walled plastic film, and a third soft thick-walled plastic film, thereby improving the overall sealing performance of the device and enabling precise positioning to the blasting area, thus solving the problems mentioned in the background art.
[0005] This utility model provides the following technical solution: a waterproof mining blasting device, comprising a first soft thick-walled plastic film, a counterweight sealing cap threadedly installed at the lower end of the first soft thick-walled plastic film, a first sealing ring threadedly installed at the upper end of the first soft thick-walled plastic film, a second soft thick-walled plastic film threadedly installed at the upper end of the first sealing ring, a second sealing ring threadedly installed at the upper end of the second soft thick-walled plastic film, a third soft thick-walled plastic film for placing explosives threadedly installed at the upper end of the second sealing ring, a top cover fitted to the top of the third soft thick-walled plastic film, a pin inserted through the interior of the second soft thick-walled plastic film and the first sealing ring, a sealing plate installed at the lower end of the top cover via a connecting plate, a sealing sleeve installed between the top cover and the sealing plate, an installation port fixedly connected to the middle of the top cover, a threaded sleeve threadedly installed on the external thread of the installation port, and a detonating tube installed at the lower end of the threaded sleeve.
[0006] Preferably, the counterweight sealing cover, the first sealing ring, and the second sealing ring have the same structure, and a pin is installed through the interior of each of the counterweight sealing cover, the first sealing ring, and the second sealing ring.
[0007] Preferably, the first sealing ring includes a mounting sleeve, with threaded posts fixed at both ends of the mounting sleeve. The threaded posts have threaded grooves on their outer surfaces, and a reinforcing plate is fixedly connected to the end of the threaded posts. The reinforcing plate has mounting holes inside, with a pin penetrating through the interior of the mounting holes.
[0008] Preferably, a counterweight is placed inside the first soft thick-walled plastic film, and the length of the second soft thick-walled plastic film is adapted to the actual depth of the blast hole on site.
[0009] Preferably, a first sealing sleeve and a second sealing sleeve are fixedly installed on the inner side of both the top cover and the encapsulation plate, and the first sealing sleeve and the second sealing sleeve are arc-shaped.
[0010] Preferably, the sealing sleeve is disposed between the upper cover and the encapsulation plate, and a cavity is formed between the upper cover, the connecting plate, the encapsulation plate and the sealing sleeve, and the cavity is filled with high-pressure helium gas.
[0011] Preferably, the threaded sleeve is threaded onto the outside of the mounting port, the end of the detonating tube is fitted with a lead wire, the detonating tube extends to the inside of the first sealing sleeve, the second sealing sleeve and the sealing rubber sleeve, and the detonating tube is in contact with the explosive filled inside the third soft thick-walled plastic film.
[0012] Compared with existing waterproof mining blasting devices, this utility model has the following advantages:
[0013] 1. This waterproof mining blasting device is assembled into a whole by a first soft thick-walled plastic membrane, a second soft thick-walled plastic membrane, and a third soft thick-walled plastic membrane, connected by a counterweight sealing cover, a first sealing ring, and a second sealing ring. After the structures are fixed, a counterweight is placed inside the first soft thick-walled plastic membrane to facilitate the control of the blasting device sinking to the bottom. The second soft thick-walled plastic membrane is adjusted according to different borehole depths to ensure that the third soft thick-walled plastic membrane moves to the blasting area. The explosive charge is installed inside the third soft thick-walled plastic membrane, which can realize the blasting of the equipment and improve the overall sealing and structural convenience of the equipment.
[0014] 2. This waterproof mining blasting device is installed inside the top cover by inserting a detonating tube. The top cover and the encapsulation plate are equipped with a first sealing sleeve and a second sealing sleeve to double seal the outside of the detonating tube, preventing liquid from flowing into the inside of the third soft thick-walled plastic film when the detonating tube is inserted. In addition, a sealing rubber sleeve is installed in the middle of the first sealing sleeve and the second sealing sleeve to further seal the outside of the detonating tube, thereby improving the overall sealing performance of the equipment. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;
[0016] Figure 2 This is a schematic cross-sectional view of the main body of this utility model;
[0017] Figure 3 This is a cross-sectional view of the detonating cord of this utility model in its installation state;
[0018] Figure 4 This is a partially enlarged structural diagram of the sealing ring of this utility model;
[0019] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle.
[0020] In the diagram: 1. First soft thick-walled plastic film; 2. Counterweight sealing cover; 3. First sealing ring; 31. Mounting sleeve; 32. Threaded post; 33. Reinforcing plate; 34. Mounting hole; 4. Second soft thick-walled plastic film; 5. Second sealing ring; 6. Third soft thick-walled plastic film; 7. Top cover; 8. Pin; 9. Counterweight block; 10. Connecting plate; 11. Encapsulation plate; 12. First sealing sleeve; 13. Second sealing sleeve; 14. Sealing rubber sleeve; 15. Mounting port; 16. Threaded sleeve; 17. Detonating cord; 18. Lead wire. Detailed Implementation
[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A waterproof mining blasting device includes a first soft thick-walled plastic membrane 1. A counterweight sealing cap 2 is threaded onto the lower end of the first soft thick-walled plastic membrane 1, and a first sealing ring 3 is threaded onto the upper end of the first soft thick-walled plastic membrane 1. The counterweight sealing cap 2 and the first sealing ring 3 are installed at both ends of the first soft thick-walled plastic membrane 1 to seal the exterior of the first soft thick-walled plastic membrane 1. A second soft thick-walled plastic membrane 4 is threaded onto the upper end of the first sealing ring 3, and a second sealing ring 5 is threaded onto the upper end of the second soft thick-walled plastic membrane 4. A second soft thick-walled plastic membrane 4 and a third soft thick-walled plastic membrane 6 are respectively installed at both ends of the second sealing ring 5, connecting and fixing the second soft thick-walled plastic membrane 4 and the third soft thick-walled plastic membrane 6. A third explosive placement device is threaded onto the upper end of the second sealing ring 5. A soft, thick-walled plastic film 6 is provided. A top cover 7 is installed at the top of the third soft, thick-walled plastic film 6 to seal the explosive charge. A pin 8 is installed through the interior of the second soft, thick-walled plastic film 4 and the first sealing ring 3. A sealing plate 11 is installed at the lower end of the top cover 7 via a connecting plate 10. A sealing sleeve 14 is installed between the top cover 7 and the sealing plate 11, and the sealing sleeve 14 is pressed between the top cover 7 and the sealing plate 11 to seal the space between them. An installation port 15 is fixedly connected to the middle of the top cover 7. A threaded sleeve 16 is installed on the external thread of the installation port 15. A detonating cord 17 is installed at the lower end of the threaded sleeve 16. After the detonating cord 17 is installed, it contacts the explosive charge in the explosive charge, and the detonation of the explosive charge is controlled by a fuse 18.
[0023] Please see Figure 1 The counterweight sealing cover 2, the first sealing ring 3, and the second sealing ring 5 have the same structure. The counterweight sealing cover 2, the first sealing ring 3, and the second sealing ring 5 all have pins 8 installed through them. Because the counterweight sealing cover 2, the first sealing ring 3, and the second sealing ring 5 have the same structure, and the counterweight sealing cover 2, the first sealing ring 3, and the second sealing ring 5 sequentially drive the first soft thick-walled plastic film 1, the second soft thick-walled plastic film 4, and the third soft thick-walled plastic film 6 to be spliced together, ensuring that the equipment forms a whole and ensuring the sealing during the connection process.
[0024] Please see Figure 4The first sealing ring 3 includes a mounting sleeve 31, with threaded posts 32 fixed at both ends of the mounting sleeve 31. Threaded grooves are formed on the outside of the threaded posts 32, and a reinforcing plate 33 is fixedly connected to the end of the threaded posts 32. A mounting hole 34 is formed inside the reinforcing plate 33, through which a pin 8 passes. The threaded posts 32 are installed through the outside of the mounting sleeve 31. The threaded posts 32 can be threaded into the inside of the first soft thick-walled plastic film 1, the second soft thick-walled plastic film 4, and the third soft thick-walled plastic film 6. At the same time, the reinforcing plate 33 is fixed to the end of the threaded posts 32, and the pin 8 is installed through the inside of the second soft thick-walled plastic film 4, passing through the inside of the mounting hole 34. This further fixes the position of the first sealing ring 3 between the first soft thick-walled plastic film 1 and the second soft thick-walled plastic film 4, improving the stability during equipment assembly.
[0025] Please see Figure 2 The first soft thick-walled plastic film 1 has a counterweight 9 placed inside it. The length of the second soft thick-walled plastic film 4 is adapted to the actual depth of the blast hole. By placing the counterweight 9 inside the first soft thick-walled plastic film 1, the counterweight 9 increases the gravity of the equipment, ensuring that the blasting device can effectively sink to the bottom of the blast hole. At the same time, the length of the second soft thick-walled plastic film 4 is adjusted according to the different depths of the blast hole. That is, after the first soft thick-walled plastic film 1 sinks to the bottom, it can drive the third soft thick-walled plastic film 6 to be accurately placed at the blasting position, improving the accuracy of blasting position positioning calibration.
[0026] Please see Figure 5 The inner sides of the top cover 7 and the encapsulation plate 11 are both fixedly installed with a first sealing sleeve 12 and a second sealing sleeve 13. The first sealing sleeve 12 and the second sealing sleeve 13 are arc-shaped. The first sealing sleeve 12 and the second sealing sleeve 13 are fixedly installed on the inner sides of the top cover 7 and the encapsulation plate 11. Under normal conditions, the first sealing sleeve 12 and the second sealing sleeve 13 contract inward to ensure that the inside of the top cover 7 and the encapsulation plate 11 remains sealed. At the same time, during the insertion and installation of the detonating tube 17, the first sealing sleeve 12 and the second sealing sleeve 13 are opened in sequence. Through the double sealing method, it is prevented that when the detonating tube 17 is inserted, liquid flows into the inner explosive pack of the third soft thick-walled plastic film 6, thereby improving the sealing performance of the detonating tube 17 during installation.
[0027] Please see Figure 5 The sealing sleeve 14 is disposed between the upper cover 7 and the encapsulation plate 11, forming a cavity between the upper cover 7, the connecting plate 10, the encapsulation plate 11 and the sealing sleeve 14. The cavity is filled with high-pressure helium gas. The sealing sleeve 14 is disposed inside the cavity. When the detonating tube 17 is inserted and installed, the sealing sleeve 14 is pressed by high-pressure nitrogen gas to ensure that the sealing sleeve 14 and the detonating tube 17 are in a tight fit, further improving its waterproof performance.
[0028] Please see Figure 3 The threaded sleeve 16 is threaded onto the outside of the mounting port 15. The end of the detonating tube 17 is fitted with a lead wire 18. The detonating tube 17 extends to the inside of the first sealing sleeve 12, the second sealing sleeve 13, and the sealing rubber sleeve 14, and the detonating tube 17 is in contact with the explosive filled inside the third soft thick-walled plastic film 6. After the detonating tube 17 is inserted into the upper cover 7, the threaded sleeve 16 is fitted onto the outside of the mounting port 15. By rotating the threaded sleeve 16, the threaded sleeve 16 is threaded onto the outside of the mounting port 15. The detonating tube 17 can be activated by the lead wire 18. The detonating tube 17 triggers the explosive charge, thereby controlling the explosion of the explosive charge inside the third soft thick-walled plastic film 6.
[0029] Working principle: In use, a counterweight sealing cap 2 and a first sealing ring 3 are respectively installed at both ends of the first soft thick-walled plastic membrane 1, and a counterweight block 9 is placed inside the first soft thick-walled plastic membrane 1. At the same time, a second soft thick-walled plastic membrane 4 and a second sealing ring 5 are installed sequentially through the first sealing ring 3 and the second sealing ring 5 at the upper end of the first soft thick-walled plastic membrane 1. The second soft thick-walled plastic membrane 4 is adjusted according to different borehole depths. At the same time, a pin 8 is installed on the outside of the counterweight sealing cap 2, the first sealing ring 3 and the second sealing ring 5 to ensure the structural splicing and limitation. The interior of the third soft thick-walled plastic membrane 6 is filled with a propellant bag, and the upper cover 7 is threadedly installed on the upper end of the third soft thick-walled plastic membrane 6. In the encapsulation process, under normal conditions, the first sealing sleeve 12 and the second sealing sleeve 13 are pressed inwards, and the threaded sleeve 16 seals the inside of the upper cover 7 under the action of high-pressure nitrogen. When the detonating tube 17 is installed, the detonating tube 17 extends to the middle of the first sealing sleeve 12, the second sealing sleeve 13, and the sealing rubber sleeve 14, opening the first sealing sleeve 12, the second sealing sleeve 13, and the sealing rubber sleeve 14, thereby controlling the contact between the detonating tube 17 and the explosive charge. Under pressure, the first sealing sleeve 12 and the second sealing sleeve 13 can seal the outside of the detonating tube 17, and the sealing rubber sleeve 14 further improves the tightness of the fit between it and the detonating tube 17, thus improving the sealing performance of the detonating tube 17 during installation.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A waterproof mining blasting device, comprising a first soft thick wall plastic film (1), the lower end of the first soft thick wall plastic film (1) is threadedly installed with a counterweight sealing cover (2), and the upper end of the first soft thick wall plastic film (1) is threadedly installed with a first sealing ring (3), characterized in that: The upper end of the first sealing ring (3) is threaded with a second soft thick-walled plastic film (4), the upper end of the second soft thick-walled plastic film (4) is threaded with a second sealing ring (5), the upper end of the second sealing ring (5) is threaded with a third soft thick-walled plastic film (6) for placing explosives, the top end of the third soft thick-walled plastic film (6) is fitted with a top cover (7), the interior of the second soft thick-walled plastic film (4) and the first sealing ring (3) is fitted with a pin (8), the lower end of the top cover (7) is fitted with a sealing plate (11) through a connecting plate (10), a sealing sleeve (14) is fitted between the top cover (7) and the sealing plate (11), the middle part of the top cover (7) is fixedly connected with an installation port (15), the external thread of the installation port (15) is fitted with a threaded sleeve (16), and the lower end of the threaded sleeve (16) is fitted with a detonating tube (17).
2. The waterproof mining blasting device according to claim 1, characterized in that: The counterweight sealing cover (2), the first sealing ring (3) and the second sealing ring (5) have the same structure, and the counterweight sealing cover (2), the first sealing ring (3) and the second sealing ring (5) are all fitted with pins (8) through their interiors.
3. The waterproof mining blasting device according to claim 1, characterized in that: The first sealing ring (3) includes an installation sleeve (31), with threaded posts (32) fixed at both ends of the installation sleeve (31). The threaded posts (32) have threaded grooves on their outer sides, and a reinforcing plate (33) is fixedly connected to the end of the threaded posts (32). The reinforcing plate (33) has an installation hole (34) inside, with a pin (8) penetrating through the inside of the installation hole (34).
4. The waterproof mining blasting device according to claim 1, characterized in that: The first soft thick-walled plastic film (1) has a counterweight (9) inside, and the length of the second soft thick-walled plastic film (4) is adapted to the actual depth of the blast hole on site.
5. The waterproof mining blasting device according to claim 1, characterized in that: The inner sides of the top cover (7) and the encapsulation plate (11) are both fixedly installed with a first sealing sleeve (12) and a second sealing sleeve (13), and the first sealing sleeve (12) and the second sealing sleeve (13) are arc-shaped.
6. The waterproof mining blasting device according to claim 1, characterized in that: The sealing sleeve (14) is disposed between the upper cover (7) and the encapsulation plate (11), and a cavity is formed between the upper cover (7), the connecting plate (10), the encapsulation plate (11) and the sealing sleeve (14), and the cavity is filled with high-pressure helium gas.
7. The waterproof mining blasting device according to claim 1, characterized in that: The threaded sleeve (16) is threaded onto the outside of the mounting port (15), and the end of the detonating tube (17) is fitted with a lead wire (18). The detonating tube (17) extends to the inside of the first sealing sleeve (12), the second sealing sleeve (13) and the sealing rubber sleeve (14), and the detonating tube (17) is in contact with the explosive filled inside the third soft thick-walled plastic film (6).