Radial vacuum interval charging device with active pressure relief function

Abstract

The utility model relates to a radial vacuum interval charging device capable of actively relieving pressure, which belongs to the field of charging devices and comprises an outer cylinder, an inner cylinder is arranged in the outer cylinder, sealing plates are arranged at the top of the outer cylinder and the top of the inner cylinder, a vacuum medium layer is arranged between the outer cylinder and the inner cylinder, a plurality of partition plates are arranged in the inner cylinder, and the partition plates are arranged on the outer cylinder and the inner cylinder. And an explosive filler layer located on one side of the isolation plate is arranged in the inner cylinder. According to the radial vacuum interval charging device with the active pressure relief function, multiple layers of isolation plates are arranged, so that explosive filler layers are separated in a layered mode, explosives are layered, hole-by-hole detonation can be achieved, and the problem that the energy utilization rate is low due to the fact that energy of single-time instant explosion is intensively released in a short time is solved; and meanwhile, the energy during explosion can be transmitted to the vacuum of the vacuum medium layer from air and then transmitted to the blast hole, so that the time of the explosion action can be effectively prolonged, and the effective utilization rate of the explosive explosion energy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charge devices, in particular to a radial vacuum interval charge device with active pressure relief. Background Art

[0002] Open-pit bench blasting is a blasting operation carried out in an open-pit mine. It uses precisely controlled placement and detonation of explosives to efficiently and safely remove ore or rock. This technology is often used in large-scale mining projects, especially when large-scale surface material needs to be removed to facilitate mining operations. Blasting operations require on-site charging.

[0003] A large amount of waste rock needs to be stripped during the mining period, and the mine faces a peak period of stripping within a short period of time after it is put into production. With the stripping of the mining area, accompanied by the development of rock joints and fissures and the differences in rock properties, etc., air medium interval charging blasting is currently used. Due to the narrow and closed space in the blasthole, the energy of the explosives cannot be effectively unloaded in time after the explosion, resulting in the rock crushing effect in the crushing area is still large, the initial energy consumption is large, and the effective utilization rate of the energy generated by the instantaneous explosives is low. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a radial vacuum interval charging device with active pressure relief, which has the advantages of improving the effective utilization rate of explosive energy.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a radial vacuum interval charging device with active pressure relief, comprising an outer cylinder, an inner cylinder is provided inside the outer cylinder, sealing plates are provided at the top and top of the outer cylinder and the inner cylinder, a vacuum medium layer is provided between the outer cylinder and the inner cylinder, a plurality of isolation plates are provided inside the inner cylinder, and an explosive filling layer is provided inside the inner cylinder on one side of the isolation plate.

[0006] Furthermore, installation cavities are provided on both sides of the interior of the isolation plate, a movable plate is slidably connected to the interior of the installation cavity, and a spring is provided between the movable plate and the inner wall of the installation cavity.

[0007] Furthermore, a limiting block is provided on a side of the movable plate away from the spring, and the limiting block is a trapezoidal structure.

[0008] Furthermore, a lead wire is provided on the inner wall of the inner cylinder, and the limit block is adapted to the lead wire.

[0009] Furthermore, a threading hole is provided at the center of the interior of the isolation plate, and a lead is provided inside the explosive filling layer.

[0010] Furthermore, one end of the lead sequentially passes through the isolation plate and the sealing plate and extends to the outside. The explosive filling layer is provided with three layers, and an air medium layer is provided between the uppermost explosive filling layer and the sealing plate.

[0011] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0012] The radial vacuum interval charging device with active pressure relief can isolate the explosive filling layers by arranging multiple layers of isolation plates, and the explosives can be detonated hole by hole, avoiding the problem of low energy utilization rate caused by concentrated release of energy of a single instantaneous explosion in a short time. At the same time, the energy during the explosion will be transferred from the air to the vacuum of the vacuum medium layer, and finally to the blast hole, which can effectively prolong the time of the blasting effect and improve the effective utilization rate of the explosive explosion energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a cross-sectional view of the charging device of the utility model structure;

[0014] Figure 2 This is an enlarged view of the structural isolation board of the utility model;

[0015] Figure 3 It is a three-dimensional diagram of the structural isolation board of the utility model.

[0016] In the figure: 1. Outer tube; 2. Inner tube; 3. Vacuum medium layer; 4. Sealing plate; 5. Explosive filling layer; 6. Isolation plate; 7. Air medium layer; 8. Threading hole; 9. Mounting cavity; 10. Movable plate; 11. Spring; 12. Limiting block; 13. Lead wire. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1 to 3 In this embodiment, an active pressure-relieving radial vacuum interval charging device includes an outer tube 1, an inner tube 2 is provided inside the outer tube 1, sealing plates 4 are provided at the top and top of the outer tube 1 and the inner tube 2, a vacuum medium layer 3 is provided between the outer tube 1 and the inner tube 2, a plurality of isolation plates 6 are provided inside the inner tube 2, and an explosive filling layer 5 is provided inside the inner tube 2 on one side of the isolation plate 6.

[0019] The outer tube 1, the inner tube 2 and the sealing plate 4 are made of polyvinyl chloride, which has the characteristics of flexibility, pressure resistance, wear resistance, acid and alkali resistance, and light weight.

[0020] By providing multiple layers of isolation plates 6, the explosive filling layer 5 is separated into layers, and the explosives are separated into layers, so that they can be detonated hole by hole, thereby avoiding the problem of low energy utilization rate caused by concentrated release of energy from a single instantaneous explosion in a short time.

[0021] In this embodiment, installation cavities 9 are opened on both sides of the interior of the isolation plate 6, and a movable plate 10 is slidably connected to the interior of the installation cavity 9. A spring 11 is provided between the movable plate 10 and the inner wall of the installation cavity 9. A limiting block 12 is provided on the side of the movable plate 10 away from the spring 11, and the limiting block 12 is a trapezoidal structure.

[0022] It is understandable that the limiting block 12 is designed to be trapezoidal so that the isolation plate 6 can be inserted into the inner tube 2 for easy installation.

[0023] See also Figure 1 In this embodiment, a lead wire 13 is provided on the inner wall of the inner tube 2 , and the limiting block 12 is adapted to the lead wire 13 .

[0024] It should be noted that the explosive energy is first transferred to the air medium layer 7 in the inner tube 2, then transferred to the vacuum of the vacuum medium layer 3 by the air medium layer 7, and finally transferred to the blast hole. This energy transfer process can store a part of the explosive explosion energy in the vacuum area of the vacuum medium layer, which can effectively extend the time of the blasting effect and improve the effective utilization rate of the explosive explosion energy.

[0025] Among them, a wire hole 8 is provided at the center of the isolation plate 6, and a lead 13 is provided inside the explosive filling layer 5. One end of the lead 13 passes through the isolation plate 6 and the sealing plate 4 in sequence and extends to the outside. The explosive filling layer 5 is provided with three layers, and an air medium layer 7 is provided between the topmost explosive filling layer 5 and the sealing plate 4.

[0026] The wire threading hole 8 is used for the lead wire 13 to pass through and lead out, and the isolation plate 6 is used to separate the upper and lower explosive filling layers 5.

[0027] The working principle of the above embodiment is as follows: when charging, vacuum is stored in the vacuum medium layer 3, and the first layer of explosive filling layer 5 is filled into the inner tube 2, and then the isolation plate 6 is placed. In the process of pressing the isolation plate 6 downward, the limiting card block 12 is squeezed and moves into the interior of the installation cavity 9. When the installation cavity 9 is aligned with the lead 13 of the lowest layer, the rebound force of the spring 11 can make the limiting card block 12 inserted into the interior of the lead 13, thereby limiting the isolation plate 6, and then filling the second layer of explosive filling layer 5. The three layers of explosive filling layer 5 are filled in sequence, and space is left between the top layer of explosive filling layer 5 and the sealing plate 4 so that an air medium layer 7 is stored inside it. By isolating the explosives in layers, detonation can be carried out hole by hole, avoiding the problem of low energy utilization rate caused by the concentrated release of energy of a single instantaneous explosion in a short time. At the same time, the energy during the explosion will be transferred from the air to the vacuum of the vacuum medium layer 3, and finally to the blasthole, which can effectively prolong the time of the blasting effect and improve the effective utilization rate of the explosive explosion energy.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0029] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A radial vacuum spacer charging device with active pressure relief, comprising an outer cylinder (1), characterized in that: An inner cylinder (2) is provided inside the outer cylinder (1), sealing plates (4) are provided at the top and bottom of the outer cylinder (1) and the inner cylinder (2), a vacuum medium layer (3) is provided between the outer cylinder (1) and the inner cylinder (2), a plurality of isolation plates (6) are provided inside the inner cylinder (2), and an explosive filling layer (5) is provided inside the inner cylinder (2) and is located on one side of the isolation plates (6).

2. The radial vacuum spacer charging device with active pressure relief according to claim 1, characterized in that: Both sides of the interior of the isolation plate (6) are provided with mounting cavities (9), the interior of the mounting cavity (9) is slidably connected to a movable plate (10), and a spring (11) is provided between the movable plate (10) and the inner wall of the mounting cavity (9).

3. The radial vacuum spacer charging device with active pressure relief according to claim 2, characterized in that: A limiting block (12) is provided on a side of the movable plate (10) away from the spring (11), and the limiting block (12) is a trapezoidal structure.

4. The radial vacuum spacer charging device with active pressure relief according to claim 3, characterized in that: A lead wire (13) is provided on the inner wall of the inner cylinder (2), and the limit block (12) is adapted to the lead wire (13).

5. The radial vacuum spacer charging device with active pressure relief according to claim 1, characterized in that: A threading hole (8) is provided at the center of the interior of the isolation plate (6), and a lead (13) is provided inside the explosive filling layer (5).

6. The radial vacuum spacer charging device with active pressure relief according to claim 1, characterized in that: One end of the lead (13) sequentially passes through the isolation plate (6) and the sealing plate (4) and extends to the outside. The explosive filling layer (5) is provided with three layers, and an air medium layer (7) is provided between the uppermost explosive filling layer (5) and the sealing plate (4).

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