Auxiliary device for charging gun holes

Abstract

The utility model discloses an auxiliary device for charging explosives in a blasthole, comprising a first sleeve, a second sleeve and a rib plate, wherein a first cavity and a second cavity are formed between the first sleeve, the second sleeve and the rib plate, and a groove is further formed between the second sleeve and the rib plate. After drilling the blasthole, a detonator is put in, a leg line is led out, and then the auxiliary device is inserted into the blasthole, and the leg line led out of the detonator is restricted in the groove. When charging explosives, the first cavity and the second cavity ensure the stability of the air pressure inside and outside the blasthole, thereby ensuring that the auxiliary device can safely and smoothly complete the charging work of the mixed explosives.

Description

Technical Field

[0001] The utility model relates to the technical field of blasthole charging, in particular to an auxiliary device for blasthole charging. Background Art

[0002] The blasting of earth and rock in open-pit mines is generally large-scale. The large and small gravels generated during the entire construction operation are often scattered throughout the entire mining area. In the face of emergency and dangerous blasting areas where large drilling rigs cannot be used, small-diameter drilling and blasting are often used. At present, after small-diameter drilling and blasting, conventional auxiliary devices are used to assist in charging the blastholes, that is, a funnel-shaped auxiliary device is placed on the blasthole.

[0003] However, the existing technology has the following problems: 1. Conventional auxiliary devices are prone to contact with the hole wall and damage the detonator leg line, affecting the blasting quality and resulting in poor use effect; 2. Conventional auxiliary devices directly block the holes when spraying. The inside and outside of the blasthole are isolated during spraying, which will cause an imbalance in air pressure. As a result, the pressure inside the hole is too high, resulting in uneven spraying. The charging efficiency is affected and the risk of premature explosion and explosion refusal is increased. Utility Model Content

[0004] The utility model aims at the problem that the current blasting is not smooth when charging blast holes, and provides an auxiliary device for charging blast holes.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] An auxiliary device for charging a blast hole comprises a first sleeve, a second sleeve and a plurality of ribs;

[0007] The first sleeve is sleeved outside the second sleeve, and the two ends of the rib plate are respectively connected to the first sleeve and the second sleeve, and the rib plate forms a plurality of cavities between the first sleeve and the second sleeve.

[0008] The utility model can maintain the air pressure balance inside and outside the blast hole through the cavity when charging the blast hole, thereby ensuring the smooth progress of the charging process and high charging efficiency.

[0009] Further, the first sleeve and the second sleeve are both in an inverted cone shape;

[0010] The lower end of the second sleeve is provided with a first opening, and the upper end surface is provided with a second opening, and the first opening of the second sleeve is smaller than the second opening.

[0011] The utility model can ensure that the explosives will not be stuck on the wall and blocked when the explosives are mixed and loaded on site through the inverted cone slope in the second sleeve, and the use effect is good.

[0012] Furthermore, the lower end surface of the first sleeve does not exceed the lower end surface of the second sleeve, and the upper end surface does not exceed the upper end surface of the second sleeve.

[0013] The outer side wall of the first sleeve of the utility model can be closely fitted with the opening of the blast hole, so that broken stones are not easy to enter the hole while maintaining the stability of the opening of the blast hole.

[0014] Furthermore, a groove is provided on the first sleeve, and ribs are provided at both ends of the groove.

[0015] The groove of the utility model can leave a wiring position for the detonator leg wire, thereby protecting the detonator leg wire from being crushed.

[0016] Further, the number of the ribs is five, and the cavity includes a first cavity and a second cavity;

[0017] Two first cavities and two second cavities are formed between the five ribs and the first sleeve and the second sleeve. The second cavities are close to the grooves, and the first cavities are far away from the grooves.

[0018] The utility model utilizes a plurality of cavities to ensure the air pressure balance inside and outside the blast hole, and when a part of the cavities is blocked, the air pressure balance can be maintained through the cavities that are not blocked.

[0019] Furthermore, the circumferential angle of two adjacent first cavities is greater than the circumferential angle of the second cavity, and the circumferential angle of the groove is not less than forty-five degrees.

[0020] The different sizes of the first cavity and the second cavity of the utility model are arranged to help the user to quickly identify the position of the groove during use.

[0021] Furthermore, the first sleeve, the second sleeve and the ribs are made of PFA or other corrosion-resistant and impact-resistant engineering plastics.

[0022] The materials adopted by the utility model can ensure that the entire charging auxiliary work can be carried out safely and smoothly.

[0023] Furthermore, the outer side wall of the first sleeve is elastic.

[0024] The elastic first sleeve of the utility model can bounce away the broken stones hitting the first sleeve when in use, thereby preventing the broken stones from falling into the blast hole.

[0025] Compared with the prior art, the utility model has the following beneficial effects: 1. The utility model has good comprehensive mechanical properties and can be used repeatedly for charging blastholes. The elastic first sleeve is sleeved on the blasthole and can bounce back when the crushed stone contacts the outer wall of the first sleeve, thereby effectively preventing the crushed stone from falling into the hole and causing blockage of the blasthole; 2. The utility model can prevent the closed air pressure in the hole from being too high when conveying explosives through the first cavity and the second cavity, and timely eliminate the air pressure difference inside and outside the blasthole; 3. The groove of the utility model can prevent the foot line from falling into the hole when charging, and can also protect the foot line from being impacted or bent at the mouth of the blasthole. Damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 It is a top view of the utility model.

[0028] Markings in the figure: 1. second sleeve; 2. first cavity; 3. rib; 4. first sleeve; 5. groove; 6. second cavity; 8. second opening; 9. first opening. DETAILED DESCRIPTION

[0029] The utility model is described in detail below in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 should not be understood as a limitation on the present invention.

[0032] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0033] like Figure 1 , Figure 2 As shown, the auxiliary device for charging a blast hole provided in this embodiment includes a first sleeve 4, a second sleeve 1 and a plurality of ribs 3;

[0034] The first sleeve 4 is sleeved outside the second sleeve 1, and the two ends of the rib plate 3 are respectively connected to the first sleeve 4 and the second sleeve 1, and the rib plate 3 forms a plurality of cavities between the first sleeve 4 and the second sleeve 1;

[0035] The outer diameter of the midpoint of the axis of the first sleeve 4 is φ1, and the value of φ1 is 110mm<φ1<310mm, which is determined by the actual aperture. The cone angle is 16°<θ<24°. The outer diameters of the upper and lower ends of the first sleeve 4 are 0.50φ1~0.60φ1 and 1.40φ1~1.50φ1 respectively. The axis length is derived from the above design parameters: 1.80φ1 <l1<3.50φ1。

[0036] The conical surface of the second sleeve 1 is parallel to the first sleeve 4, the midpoint is φ2, the range of φ2 is 0.93φ1<φ2<0.95φ1, the outer diameters of the upper and lower ends of the second sleeve 1 are 0.45φ2~0.55φ2 and 1.45φ2~1.55φ2 respectively, and the axis length is derived from the above design parameters: 2.00φ2 <l2<3.80φ2。

[0037] In this embodiment, when starting to work, the auxiliary device is installed in the blast hole so that the outer wall of the first sleeve 4 fits tightly with the blast hole. When charging, the cavity maintains the air pressure balance inside and outside the blast hole.

[0038] like Figure 1 As shown, the first sleeve 4 and the second sleeve 1 are both in an inverted cone shape;

[0039] The second sleeve 1 has a first opening 9 at its lower end and a second opening 8 at its upper end. The first opening 9 of the second sleeve 1 is smaller than the second opening 8 .

[0040] In this embodiment, when charging, the mixed explosive will first enter the second sleeve 1 through the second opening 8 and then enter the blast hole through the first opening 9 .

[0041] like Figure 1 As shown, the lower end surface of the first sleeve 4 does not exceed the lower end surface of the second sleeve 1 , and the upper end surface does not exceed the upper end surface of the second sleeve 1 .

[0042] In this embodiment, when starting work, the auxiliary device is installed in the blast hole, specifically, the outer wall of the first sleeve 4 is tightly fitted in the blast hole, and then the charging work is waited.

[0043] like Figure 2 As shown, a groove 5 is provided on the first sleeve 4 , and ribs 3 are provided at both ends of the groove 5 .

[0044] In this embodiment, before the work starts, it is necessary to arrange the detonators, specifically, put the detonators into the blasthole, then arrange the leg wires of the detonators outside the blasthole, install the auxiliary device into the blasthole, make the leg wire pulled out of the blasthole located in the groove 5, and then wait for the subsequent charging work.

[0045] like Figure 2 As shown, the number of the ribs 3 is five, and the cavity includes a first cavity 2 and a second cavity 6;

[0046] Two first cavities 2 and two second cavities 6 are formed between the five ribs 3 and the first sleeve 4 and the second sleeve 1 . The second cavities 6 are close to the groove 5 , and the first cavities 2 are far away from the groove 5 .

[0047] In this embodiment, when charging, when the second opening 8 is temporarily sealed by the mixed explosive during charging, the first cavity 2 and the second cavity 6 play a role in keeping the air pressure inside and outside the blast hole balanced.

[0048] like Figure 2 As shown, the circumferential angle of two adjacent first cavities 2 is greater than the circumferential angle of the second cavity 6, and the circumferential angle of the groove 5 is not less than forty-five degrees.

[0049] In this embodiment, when charging, when the second opening 8 is temporarily sealed by the mixed explosive during charging, the first cavity 2 and the second cavity 6 play a role in keeping the air pressure inside and outside the borehole balanced. When the first cavity 2 or the second cavity 6 is accidentally blocked, the other first cavity 2 or the second cavity 6 that is not blocked will still maintain the balance between the internal and external air pressures.

[0050] like Figure 2 As shown, the materials of the first sleeve 4, the second sleeve 1 and the rib 3 are PFA, whose Chinese name is fusible polytetrafluoroethylene, or other corrosion-resistant and impact-resistant engineering plastics.

[0051] In this embodiment, the auxiliary device will be stably placed in the blast hole to carry out the charging work when charging.

[0052] like Figure 2 As shown, the outer side wall of the first sleeve 1 is elastic.

[0053] In this embodiment, when the auxiliary device is charged, the outer wall of the first sleeve 1 will bounce off the gravel that hits the first sleeve 1, so that the gravel will not fall into the blast hole.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for charging a blast hole, characterized in that: It comprises a first sleeve (4), a second sleeve (1) and a plurality of ribs (3); The first sleeve (4) is sleeved outside the second sleeve (1), and the two ends of the rib plate (3) are respectively connected to the first sleeve (4) and the second sleeve (1), and the rib plate (3) forms a plurality of cavities between the first sleeve (4) and the second sleeve (1).

2. The auxiliary device for charging a blast hole according to claim 1, characterized in that: The first sleeve (4) and the second sleeve (1) are both in an inverted cone shape; The lower end of the second sleeve (1) is provided with a first opening (9), and the upper end surface is provided with a second opening (8); the first opening (9) of the second sleeve (1) is smaller than the second opening (8).

3. The auxiliary device for charging a blast hole according to claim 2, characterized in that: The lower end surface of the first sleeve (4) does not exceed the lower end surface of the second sleeve (1), and the upper end surface does not exceed the upper end surface of the second sleeve (1).

4. The auxiliary device for charging a blast hole according to claim 1, characterized in that: The first sleeve (4) is provided with a groove (5), and ribs (3) are provided at both ends of the groove (5).

5. The auxiliary device for charging a blast hole according to claim 4, characterized in that: The number of the ribs (3) is five, and the cavity comprises a first cavity (2) and a second cavity (6); Two first cavities (2) and two second cavities (6) are formed between the five ribs (3) and the first sleeve (4) and the second sleeve (1), wherein the second cavities (6) are close to the groove (5) and the first cavities (2) are far away from the groove (5).

6. The auxiliary device for charging a blast hole according to claim 5, characterized in that: The circumferential angle of two adjacent first cavities (2) is greater than the circumferential angle of the second cavity (6), and the circumferential angle of the groove (5) is not less than forty-five degrees.

7. The auxiliary device for charging a blast hole according to claim 1, characterized in that: The first sleeve (4), the second sleeve (1) and the rib plate (3) are made of PFA or other corrosion-resistant and impact-resistant engineering plastics.

8. The auxiliary device for charging a blast hole according to claim 1, characterized in that: The outer side wall of the first sleeve (4) is elastic.

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