Charging nozzle for large-aperture emulsion explosive

Abstract

The utility model discloses a charging nozzle for large aperture emulsion explosive, which comprises a feed pipe and a nozzle body which are connected with each other, a fluid dispersion component is arranged in the nozzle body, a thickening unit and a throttling discharge hole are also arranged in the nozzle body, and the fluid dispersion component, the thickening unit and the throttling discharge hole are sequentially communicated. Fluid materials such as an emulsion matrix, a sensitizing agent and a catalyst enter the spray head body through the feeding pipe, sequentially pass through the fluid dispersing assembly, the thickening unit and the throttling discharging hole in the spray head body, and are sprayed out after being sheared, emulsified, mixed and thickened for multiple times, so that various fluids are uniformly mixed, the consistency is increased, and the fluids are better adhered to the hole wall.

Description

Technical Field

[0001] The utility model relates to the technical fields of mineral resource development, blasting engineering and mining engineering machinery, and in particular to a charging nozzle for large-aperture emulsion explosives. Background Art

[0002] At present, on-site mixed explosives technology is an important development direction in the field of industrial explosives. It has the advantages of eliminating storage and circulation links, improving safety of use, and reducing circulation costs. On-site mixing operations in underground mines are generally based on end-sensitization, that is, a static mixer is installed at the discharge port of the drug delivery hose, and the sensitizer, catalyst and emulsifier matrix are mixed and sensitized at the static mixer at the discharge port of the drug delivery hose. The static mixers currently used all pass two or more fluids through a mixer with a mesh structure, relying on the mesh flow channel to change the flow direction of the fluid for mixing and dispersion. However, the current static mixers have defects such as large pressure loss, poor dispersion effect, easy return of drugs and single function, and are usually only suitable for blastholes below DN80, and cannot be applied to large-diameter upward holes above DN100. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a charging nozzle for large-aperture emulsion explosives with uniform mixing and sensitization, good thickening effect, small pressure loss and good anti-return performance.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A charging nozzle for large-aperture emulsion explosives comprises a feed pipe and a nozzle body connected thereto, wherein a fluid dispersion component is provided in the nozzle body, and a thickening unit and a throttling discharge hole are also provided in the nozzle body, wherein the fluid dispersion component, the thickening unit and the throttling discharge hole are sequentially connected.

[0006] As a further improvement of the above technical solution: the thickening unit includes multiple groups of thickening components, the thickening components include multiple thickening plates arranged in parallel, there is a gap between two adjacent thickening plates of the thickening component, and the thickening plates of two adjacent groups of the thickening components are arranged crosswise.

[0007] As a further improvement of the above technical solution: the thickening plates of two adjacent groups of the thickening components are arranged vertically.

[0008] As a further improvement of the above technical solution: the thickening plates of two adjacent groups of the thickening components are connected as one.

[0009] As a further improvement of the above technical solution: a charging nozzle for large-aperture emulsion explosives also includes a detonating bomb mounting seat, and the detonating bomb mounting seat is circumferentially provided with a spraying port for spraying the dispersed and thickened fluid.

[0010] As a further improvement of the above technical solution: the detonating bomb mounting seat is detachably connected to the nozzle body.

[0011] As a further improvement of the above technical solution: a charging nozzle for large-aperture emulsion explosives also includes a piercing cone for clearing the blast hole, and the piercing cone is detachably connected to the detonator mounting seat.

[0012] As a further improvement of the above technical solution: the feed pipe is threadedly connected to the nozzle body, the explosive bomb mounting seat is threadedly connected to the nozzle body, and the piercing cone is threadedly connected to the explosive bomb mounting seat.

[0013] As a further improvement of the above technical solution: the fluid dispersion component is a dual-channel fluid dispersion component or a multi-channel fluid dispersion component.

[0014] As a further improvement of the above technical solution: the inner diameter of the feed pipe is larger than the inner diameter of the throttling discharge hole.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. The utility model discloses a charge nozzle for large-aperture emulsion explosives, comprising a connected feed pipe and nozzle body. Fluid materials, such as a latex matrix, a sensitizer, and a catalyst, enter the nozzle body through the feed pipe. Within the nozzle body, they sequentially pass through a fluid dispersion assembly, a thickening unit, and a throttle discharge hole, undergoing multiple shearing, emulsification, mixing, and thickening processes before being ejected. This ensures a uniform mixing of the various fluids, increases their consistency, and improves adhesion to the borehole wall. The throttle discharge hole allows the uniformly mixed, high-viscosity mixed fluid to be ejected onto the borehole wall at a high injection pressure, preventing charge backflow.

[0017] 2. The utility model discloses a charging nozzle for large-aperture emulsion explosives. A plurality of thickening plates are arranged in an interlaced manner to form a thickening unit with a plurality of dispersed small holes inside. Compared with the existing charging nozzle that disperses and remixes the mixed fluid through a dispersion network, the charging nozzle with a thickening unit disperses the mixed fluid more times, making the mixing of multiple fluids more uniform and the sensitization effect of the mixed fluid better.

[0018] 3. The utility model discloses a charging nozzle for large-aperture emulsion explosives, in which the thickening plates of two adjacent thickening components are arranged vertically, which is conducive to further enhancing the shear emulsification thickening effect of the thickening components.

[0019] 4. The utility model discloses a charging nozzle for large-aperture emulsion explosives, in which the thickening plates of two adjacent thickening assemblies are connected as one, which is beneficial to increasing the structural stability of the thickening unit.

[0020] 5. The utility model discloses a charging nozzle for large-aperture emulsion explosives. By arranging a fluid dispersion component to collide with the mixed fluid flowing through the feed pipe, the mixed fluid is dispersed and then merged to achieve the purpose of uniform mixing. Multiple flow channels are arranged in the fluid dispersion component to further improve the uniformity of fluid mixing and thus improve the quality of the agent.

[0021] 6. The utility model discloses a charging nozzle for large-aperture emulsion explosives. Since the inner diameter of the feed pipe is larger than the inner diameter of the throttling discharge hole, the mixed fluid changes its flow direction in the nozzle body, collides and mixes multiple times, and then enters the throttling discharge hole with a smaller diameter and is sprayed out at a faster flow rate.

[0022] 7. The utility model discloses a charging nozzle for large-aperture emulsion explosives, which also includes a detonating bomb mounting seat. The detonating bomb mounting seat is provided with a spraying port for spraying the agent. The agent sprayed from the throttling discharge hole is sprayed from the spraying port to prevent the detonating bomb mounting seat from hindering the agent from being sprayed to the hole wall.

[0023] 8. The utility model discloses a charging nozzle for large-diameter emulsion explosives. When the blast hole is blocked or orifice detonation is adopted, the piercing cone is fixed on the detonator mounting seat to clear the blocked blast hole and also play a guiding role. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a structural schematic diagram of a charging nozzle for large-aperture emulsion explosives in accordance with a first embodiment.

[0025] Figure 2 for Figure 1 Cross-sectional view at point A.

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the thickening unit of the present invention from a first angle.

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the thickening unit of the present invention from a second angle.

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the second embodiment of the present utility model.

[0029] The numbers in the figure represent: 1. feed pipe; 2. nozzle body; 21. thickening unit; 22. thickening assembly; 221. thickening plate; 23. throttling outlet; 3. detonator mounting seat; 31. spray port; 4. piercing cone; 5. fluid dispersion assembly. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0033] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," "connect," "fix," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] Example 1

[0035] like Figures 1 to 4 As shown, the charging nozzle for large-aperture emulsion explosives of this embodiment includes a feed pipe 1 and a nozzle body 2 connected to each other. A fluid dispersion component 5 is provided in the nozzle body 2. A thickening unit 21 and a throttling discharge hole 23 are also provided in the nozzle body 2. The fluid dispersion component 5, the thickening unit 21 and the throttling discharge hole 23 are connected in sequence.

[0036] When the charge nozzle for large-aperture emulsion explosives is used, a mixed fluid including a latex matrix, a sensitizer and a catalyst enters the nozzle body 2 through the feed pipe 1 and is ejected. The mixed fluid composed of multiple materials collides with each other when passing through the fluid dispersion component 5 in the nozzle body 2, and changes the flow direction, undergoing the first mixing, shearing and thickening. The mixed fluid that has undergone the first dispersion and thickening enters the thickening unit 21 in the nozzle body 2. When the mixed fluid passes through the thickening unit 21, it collides with each other again, undergoing the second mixing, shearing and thickening. The mixed fluid that has undergone the second dispersion and thickening enters the throttling discharge hole 23 in the nozzle body 2. When the mixed fluid passes through the throttling discharge hole 23, it is throttled, collides and mixes again during the flow process, and is quickly ejected through the throttling discharge hole 23, achieving the third mixing and thickening of the mixed fluid.

[0037] The charging nozzle for large-aperture emulsion explosives of this embodiment has the following advantages:

[0038] 1. By sequentially arranging the fluid dispersion assembly 5, the thickening unit 21 and the throttling discharge hole 23 along the flow direction of the mixed fluid in the nozzle body 2, the mixed fluid composed of the latex matrix, the sensitizer and the catalyst is mixed, sheared and thickened three times in succession, thereby improving the sensitization effect of the mixed agent.

[0039] Second, by providing the throttling discharge hole 23, the mixed fluid with uniform mixing and high viscosity is sprayed onto the blasthole wall at a relatively high spray pressure, thereby avoiding the return of charge.

[0040] Furthermore, the thickening unit 21 includes multiple groups of thickening assemblies 22, each of which includes multiple parallel thickening plates 221 (in this embodiment, six groups of thickening assemblies 22 are provided, each group including three thickening plates 221). A gap exists between adjacent thickening plates 221 of the thickening assemblies 22, and the thickening plates 221 of two adjacent groups of thickening assemblies 22 are arranged crosswise. The multiple thickening plates 221 are arranged crosswise at intervals to form a thickening unit 21 with multiple dispersed small holes inside. Compared to existing powdered nozzles that disperse and remix mixed fluids using a dispersion net, the powdered nozzles provided with the thickening unit 21 disperse the mixed fluid more times, resulting in a more uniform mixing of the multiple fluids and a better sensitization effect.

[0041] Furthermore, in this embodiment, the thickening plates 221 of two adjacent groups of thickening components 22 are arranged vertically, which is beneficial to further enhance the shear emulsification thickening effect of the thickening components.

[0042] Furthermore, in this embodiment, the thickening plates 221 of two adjacent groups of thickening components 22 are connected as one, which is beneficial to increasing the structural stability of the thickening unit 21.

[0043] Preferably, the thickening unit 21 is a 3D-printed integrated thickening unit, which has good structural stability and helps to reduce processing difficulty.

[0044] As a preferred embodiment, the fluid dispersion assembly 5 can be a dual-channel fluid dispersion assembly or a multi-channel fluid dispersion assembly. By arranging the fluid dispersion assembly 5 to collide with the mixed fluid flowing through the feed pipe 1, the mixed fluid is dispersed and then merged to achieve the purpose of uniform mixing.

[0045] Furthermore, in this embodiment, the inner diameter of the feed pipe 1 is larger than the inner diameter of the throttle discharge hole 23. The mixed fluid changes its flow direction within the nozzle body 2, collides and mixes multiple times, and then enters the throttle discharge hole 23 with a smaller diameter, so that the medicine is further mixed evenly and sprayed out at a faster flow rate.

[0046] Example 2

[0047] like Figure 5 As shown, another embodiment of the present invention is basically the same as the first embodiment, except that:

[0048] The charge nozzle for large-aperture emulsion explosives in this embodiment also includes a detonator mounting seat 3, which is circumferentially defined with spray ports 31 for dispensing the dispersed and thickened fluid. Under normal conditions, when bottom-of-hole detonation is employed, the detonator is placed on the detonator mounting seat 3. The detonator is ejected along with the explosive within the nozzle, anchored at the bottom of the hole, and continuously sprayed to fill the blasthole. Detonator mounting seat 3 is circumferentially defined with spray ports 31 for dispensing the explosive. The explosive ejected from the throttling outlet 23 is ejected through spray ports 31, preventing the detonator mounting seat 3 from obstructing the spray of the explosive from reaching the hole wall.

[0049] Furthermore, in this embodiment, the explosive bomb mounting seat 3 is detachably connected to the nozzle body 2 (for example, by threaded connection, snap connection, etc.), which facilitates the disassembly and replacement of the explosive bomb mounting seat 3.

[0050] Furthermore, in this embodiment, the charge nozzle for large-aperture emulsion explosives also includes a piercing cone 4 for clearing the blasthole. The piercing cone 4 is detachably connected to the explosive mount 3. When the blasthole is blocked or port detonation is used, the piercing cone 4 is fixed to the explosive mount 3 to clear the blocked blasthole and also serves as a guide.

[0051] As a preferred embodiment, the feed pipe 1 is threadedly connected to the nozzle body 2, the explosive bomb mounting base 3 is threadedly connected to the nozzle body 2, and the piercing cone 4 is threadedly connected to the explosive bomb mounting base 3. The connection between each component is reliable, and disassembly is convenient and quick, making it easy to repair and replace.

[0052] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the present invention, or modify it into equivalent embodiments with equivalent variations. Therefore, any simple modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A charging nozzle for large-aperture emulsion explosives, comprising a feed pipe (1) and a nozzle body (2) connected to each other, wherein a fluid dispersion component (5) is provided in the nozzle body (2), characterized in that: A thickening unit (21) and a throttling discharge hole (23) are also provided in the nozzle body (2), and the fluid dispersion component (5), the thickening unit (21) and the throttling discharge hole (23) are connected in sequence.

2. The charging nozzle for large-aperture emulsion explosives according to claim 1, characterized in that: The thickening unit (21) comprises a plurality of thickening assemblies (22), each of the thickening assemblies (22) comprising a plurality of thickening plates (221) arranged in parallel, a gap being provided between two adjacent thickening plates (221) of the thickening assemblies (22), and the thickening plates (221) of two adjacent groups of thickening assemblies (22) being arranged crosswise.

3. The charging nozzle for large-aperture emulsion explosives according to claim 2, characterized in that: The thickening plates (221) of two adjacent groups of thickening assemblies (22) are arranged vertically.

4. The charging nozzle for large-aperture emulsion explosives according to claim 2, characterized in that: The thickening plates (221) of two adjacent groups of thickening components (22) are connected as a whole.

5. The charging nozzle for large-aperture emulsion explosives according to any one of claims 1 to 4, characterized in that: It also includes an explosive bomb mounting seat (3), wherein the explosive bomb mounting seat (3) is circumferentially provided with a spraying port (31) for spraying the dispersed and thickened fluid.

6. The charging nozzle for large-aperture emulsion explosives according to claim 5, characterized in that: The explosive bomb mounting seat (3) is detachably connected to the nozzle body (2).

7. The charging nozzle for large-aperture emulsion explosives according to claim 5, characterized in that: It also includes a piercing cone (4) for clearing the blast hole, and the piercing cone (4) is detachably connected to the explosive bomb mounting seat (3).

8. The charging nozzle for large-aperture emulsion explosives according to claim 7, characterized in that: The feed pipe (1) is threadedly connected to the nozzle body (2), the explosive bomb mounting seat (3) is threadedly connected to the nozzle body (2), and the piercing cone (4) is threadedly connected to the explosive bomb mounting seat (3).

9. The charging nozzle for large-aperture emulsion explosives according to any one of claims 1 to 4, characterized in that: The fluid dispersion component (5) is a dual-channel fluid dispersion component or a multi-channel fluid dispersion component.

10. The charging nozzle for large-aperture emulsion explosives according to any one of claims 1 to 4, characterized in that: The inner diameter of the feed pipe (1) is greater than the inner diameter of the throttling discharge hole (23).

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