Anti-dropping device for upward deep hole mixed loading emulsion explosive

Abstract

The utility model discloses an upward deep hole mixed loading emulsion explosive falling prevention device, which belongs to the technical field of mine blasting and comprises a plastic cover and a blocking cylinder, the plastic cover is fixed at the top of the blocking cylinder through transparent adhesive tape, the top of the blocking cylinder is open, and the bottom of the blocking cylinder is vertically cut into a plurality of petals and unfolded outwards to be supported on the inner wall of a blast hole. A filling cavity is formed between the periphery of the blocking barrel and the inner wall of the blast hole, the top of the plastic cover and the filling cavity are filled with jute bags, and the mixed emulsion explosive cannot fall out of the blast hole through upward friction force generated by the bottom of the blocking barrel and the inner wall of the blast hole. The mixed emulsion explosive is supported through friction force between the bottom of the blocking barrel and the inner wall of the blast hole, and the top of the plastic cover and a filling cavity between the blocking barrel and the blast hole are filled with the jute bag, so that the mixed emulsion explosive is further prevented from falling out of the blast hole.

Description

Technical Field

[0001] The utility model relates to the technical field of mine blasting, in particular to a device for preventing explosives from falling when mixed and loaded with emulsion explosives in an upward deep hole. Background Art

[0002] In the charging of upward fan-shaped deep holes in the well, mixed emulsion explosives are mostly used. However, this mixed emulsion explosive has strong fluidity and there is a possibility of falling of explosives after being injected into the blasthole. Once this happens, it will affect the blasting effect of the mining area and even cause the mining area to hang. Therefore, it is necessary to block the tail of the blasthole after the mixed explosives are injected into the blasthole.

[0003] In the prior art, deep holes filled with mixed emulsion explosives are generally plugged with gunny bags. After the mixed emulsion explosives are loaded into the upward deep hole, the gunny bag is stuffed into the bottom of the mixed emulsion explosives.

[0004] Since the friction between the sack and the inner wall of the borehole is insufficient and the sack cannot be kept in close contact with the inner wall of the borehole at all times, the powder will still fall off and the problem of powder falling off cannot be completely solved. Utility Model Content

[0005] To this end, the utility model provides a device for preventing mixed emulsion explosives from dropping out in an upward deep hole, so as to solve the technical problem of mixed emulsion explosives dropping out after being injected into a blasthole.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A device for preventing explosives from falling out when mixed and loaded with emulsion explosives in an upward deep hole, comprising a plastic cover and a blocking cylinder;

[0008] The plastic cover is fixed to the top of the blocking cylinder by transparent glue;

[0009] The top of the blocking cylinder is open, and the bottom thereof is vertically cut into multiple petals and spread outwards to support the inner wall of the blasthole;

[0010] A filling cavity is formed between the outer periphery of the blocking cylinder and the inner wall of the blasthole, and the top of the plastic cover and the filling cavity are filled with sacks;

[0011] By blocking the bottom of the tube and the inner wall of the blast hole, an upward friction force is generated to prevent the mixed emulsion explosive in the blast hole from falling out of the blast hole.

[0012] Furthermore, the blocking cylinder is a tubular structure made of hard polyvinyl chloride.

[0013] Furthermore, the diameter of the plastic cover is larger than the diameter of the blocking cylinder.

[0014] Furthermore, the naturally opened diameter of the bottom of the blocking cylinder is larger than the diameter of the blast hole.

[0015] Furthermore, the outward expansion amplitudes of the multiple petals at the bottom of the blocking cylinder are consistent.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The utility model supports the mixed emulsion explosive by the friction between the bottom of the blocking tube and the inner wall of the blast hole, and fills the top of the plastic cover and the filling cavity between the blocking tube and the blast hole with sacks, thereby further preventing the mixed emulsion explosive from falling out of the blast hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0019] Figure 1 A schematic structural diagram of a device for preventing explosives from falling when mixed and loaded with emulsion explosives in an upward deep hole according to an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of an upward deep hole charging structure provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the deep hole arrangement provided in an embodiment of the present utility model.

[0022] The numbers in the figure represent the following:

[0023] 1-Plastic cover; 2-Blocking tube; 3-Mixed emulsion explosive; 4-Sack; 5-Blast hole; 6-Workshop; 7-Drilling port. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1 and Figure 2 As shown, the utility model provides a device for preventing explosives from falling out when mixed and loaded in an upward deep hole, comprising a plastic cover 1 and a blocking cylinder 2;

[0026] The plastic cover 1 is fixed to the top of the blocking cylinder 2 by transparent glue;

[0027] The top of the blocking tube 2 is open, and its bottom is vertically cut into multiple petals and spread outwards to support the inner wall of the blasthole 5;

[0028] A filling cavity is formed between the outer periphery of the blocking tube 2 and the inner wall of the blasthole 5, and a gunny bag 4 is filled in the top of the plastic cover 1 and in the filling cavity;

[0029] The upward friction force generated by the bottom of the blocking tube 2 and the inner wall of the blast hole 5 prevents the mixed emulsion explosive from falling out of the blast hole 5.

[0030] In order to ensure the supporting force of the anti-drug-drop device, the blocking tube 2 is specifically made of a tubular structure of hard polyvinyl chloride. The bottom of the tube can be manually cut vertically into multiple petals and spread outward to complete the production, which is easy to operate.

[0031] In order to enable the plastic cover 1 to completely seal the top of the blocking cylinder 2 to increase the force-bearing area, the diameter of the plastic cover 1 is designed to be larger than the diameter of the blocking cylinder 2 .

[0032] In order to facilitate the insertion of the gun rod and drive it upward into the gun hole 5, the structure formed by the combination of the plastic cover 1 and the blocking tube 2 is a hollow structure.

[0033] In order for the blocking tube 2 to effectively support the emulsion explosive mixed in the blasthole, the diameter of the naturally opened bottom of the blocking tube 2 must be larger than the diameter of the blasthole 5.

[0034] In order to make the frictional force exerted on the multiple petals at the bottom of the blocking cylinder 2 consistent, the outward expansion amplitudes of the multiple petals at the bottom of the blocking cylinder 2 need to be consistent.

[0035] like Figure 3 As shown, a number of upward deep holes are arranged in a fan shape on the top of the rock drilling channel 7. After the mixed emulsion explosives are loaded into the deep holes, the sacks 4 and the prepared blocking tubes 2 are inserted upward from the bottom of the blasthole 5 to make them close to the mixed explosives.

[0036] When in use, after the mixed emulsion explosive is loaded into the upward fan-shaped deep hole, the sack 4 is first stuffed into the blast hole from the bottom, and then the prepared blocking tube 2 is poked into the blast hole 5;

[0037] The specific use of the blocking tube is: the top of the blocking tube 2 is facing the deep hole, and the blocking tube is poked from the bottom of the blast hole 5 to the bottom of the sack 4 with a stick until it can no longer be poked in;

[0038] Since the bottom of the blocking tube 2 is open, and the maximum diameter of the naturally opened bottom is larger than the diameter of the inner wall of the blasthole 5, the upward friction force generated by the bottom of the blocking tube 2 and the inner wall of the blasthole 5 can resist the gravity of the mixed emulsion explosive sliding down, and the top of the plastic cover 1 and the filling cavity are filled with sacks 4, which can further prevent the mixed emulsion explosive from falling.

[0039] In summary, the utility model aims to solve the problem of mixed emulsion explosives dropping out after being injected into upward fan-shaped deep holes in the prior art, and designs a device to prevent mixed emulsion explosives from dropping out in upward deep holes. The mixed emulsion explosives are supported by the friction between the bottom of the blocking tube 2 and the inner wall of the blasthole 5. In addition, the top of the plastic cover 1 and the filling cavity between the blocking tube 2 and the blasthole 5 are filled with sacks 4, thereby further preventing the mixed emulsion explosives from falling out of the blasthole 5.

[0040] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A device for preventing explosives from falling out when mixed and loaded emulsion explosives upward in deep holes, characterized in that: It comprises a plastic cover (1) and a blocking cylinder (2); The plastic cover (1) is fixed to the top of the blocking cylinder (2) by transparent glue; The blocking cylinder (2) has an open top, and its bottom is vertically cut into multiple petals and spread outwards to support the inner wall of the blast hole (5); A filling cavity is formed between the outer periphery of the blocking cylinder (2) and the inner wall of the blast hole (5), and a sack (4) is filled on the top of the plastic cover (1) and in the filling cavity; An upward friction force is generated between the bottom of the blocking tube (2) and the inner wall of the blast hole (5), so that the mixed emulsion explosive will not fall out of the blast hole (5).

2. The device for preventing explosives from falling out when mixed and loaded emulsion explosives upward in deep holes according to claim 1, characterized in that: The blocking cylinder (2) is specifically a tubular structure made of hard polyvinyl chloride.

3. The device for preventing explosives from falling out when mixed and loaded emulsion explosives upward in deep holes according to claim 1, characterized in that: The diameter of the plastic cover (1) is larger than the diameter of the blocking cylinder (2).

4. The device for preventing explosives from falling out when mixed and loaded emulsion explosives upward in deep holes according to claim 1, characterized in that: The naturally opened diameter of the bottom of the blocking cylinder (2) is larger than the diameter of the blast hole (5).

5. The device for preventing explosives from falling out when mixed and loaded emulsion explosives upward in deep holes according to claim 1, characterized in that: The multiple petals at the bottom of the blocking cylinder (2) expand outwards to the same extent.

Images