Surface mine accumulated water blast hole water blowing device

Abstract

The utility model relates to a water blowing device in the technical field of blasting engineering, in particular to a surface mine accumulated water blast hole water blowing device which comprises a first semicircular disc, a first external water pipe, a second semicircular disc and a second external water pipe, a first hoop matched with a guide pipe is arranged on the first semicircular disc, a first drainage pipeline is arranged on the first semicircular disc, and a second hoop matched with the guide pipe is arranged on the second semicircular disc. A first fixing device is arranged on the outer circumference of the first semicircular disc and used for fixing the first semicircular disc to a blast hole outlet, a second hoop matched with a guide pipe is arranged on the second semicircular disc, a second drainage pipeline is arranged on the second semicircular disc, and a second fixing device is arranged on the outer circumference of the second semicircular disc and used for fixing the second semicircular disc to a blast hole outlet. The second fixing device is used for fixing the second semicircular disc to a blast hole outlet, the first external water pipe is connected with the first drainage pipeline, and the second external water pipe is connected with the second drainage pipeline, so that high-pressure air of the guide pipe can blow accumulated water into the first external water pipe and the second external water pipe, and the blast hole is prevented from collapsing.

Description

Technical Field

[0001] The utility model relates to a water blowing device in the technical field of blasting engineering, in particular to a water blowing device for waterlogged blast holes in open-pit mines. Background Technique

[0002] Open-pit blasting is mainly applied to large-scale earthwork excavation projects with good construction environments. Due to the existence of fissure water and groundwater, water will accumulate in the drill holes. On the other hand, during construction in the rainy season, a large amount of rainwater will pour into the drill holes after they are completed, forming water accumulation. The water accumulation in the blast holes brings many disadvantages to the subsequent blasting operations: First, cost-effective on-site mixed ammonium nitrate fuel oil explosives cannot be used in blasting, and only more expensive water-resistant explosives can be adopted, increasing the blasting cost; Second, during the charging process, since the density of the water accumulation (especially muddy water) in the blast holes is similar to that of the emulsion explosive, it is difficult to ensure that the charging density meets the design requirements during charging, affecting the blasting quality. In addition, it will also lead to poor stemming quality of the blast holes, resulting in hole flushing or blasting flying stones, triggering safety accidents.

[0003] The existing method for dealing with the problem of water accumulation in blast holes is as follows: Insert a conduit into the water accumulation in the blast hole, connect an air compressor to the conduit, and the air compressor sends high-pressure air into the conduit. The high-pressure air is used to blow the water in the blast hole, so that the water in the blast hole is blown. For example, the Chinese patent with the authorization announcement number CN210603006U discloses a rapid water blowing device for water holes, specifically a rapid water blowing device for water holes, which includes a drill rig, a connecting piece, and a conduit with one end capable of extending into the water hole. One end of the connecting piece is provided with a thread and is threadedly connected to the rotary head of the drill rig. The other end of the connecting piece is fixedly connected to the inlet end of the conduit. This patent uses the conduit to extend into the blast hole and blows the water in the blast hole through high-pressure air. However, when the high-pressure air drives the water to rush out of the blast hole, it is easy to scour the blast hole wall, causing hole collapse. Therefore, there is an urgent need for a water blowing device for waterlogged blast holes in open-pit mines that can not only drain the water in the blast hole but also avoid causing hole collapse. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a water blowing device for waterlogged blast holes in open-pit mines that can not only drain the water in the blast hole but also avoid causing hole collapse.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is as follows: A water blowing device for waterlogged blast holes in open-pit mines, comprising:

[0006] A mobile air compressor, on which an air outlet pipe is provided;

[0007] A ball valve, one end of which is threadedly connected to the air outlet pipe;

[0008] A conduit, one end of which is connected to the other end of the ball valve;

[0009] The first semi - disc, on which there is a first clamp matching the conduit, a first drainage pipe, and on the outer circumference of the first semi - disc there is a first fixing device for fixing the first semi - disc at the outlet of the blast hole;

[0010] The second semi - disc, on which there is a second clamp matching the conduit, a second drainage pipe, and on the outer circumference of the second semi - disc there is a second fixing device for fixing the second semi - disc at the outlet of the blast hole;

[0011] The first external water pipe, which is connected to the first drainage pipe;

[0012] The second external water pipe, which is connected to the second drainage pipe;

[0013] During assembly, one end of the first external water pipe extends into the bottom of the blast hole, one end of the second external water pipe extends into the bottom of the blast hole, the first clamp and the second clamp tightly connect the conduit, the first semi - disc and the second semi - disc form a disc, and through the first fixing device and the second fixing device, the disc seals the outlet of the blast hole.

[0014] Furthermore, one end of the first drainage pipe is provided with a first internal thread, and one end of the first external water pipe is provided with a first external thread connected to the first internal thread.

[0015] Furthermore, one end of the second drainage pipe is provided with a second internal thread, and one end of the second external water pipe is provided with a second external thread connected to the second internal thread.

[0016] Furthermore, the other end of the conduit is a bevel - cut end, and the cutting angle is 45°.

[0017] Furthermore, the first fixing device includes a convex block and a screw. There is a convex block on the outer circumference of the first semi - disc, and a through - hole matching the screw is provided on the convex block. The structure of the second fixing device is the same as that of the first fixing device.

[0018] Furthermore, the other end of the first drainage pipe is provided with a third internal thread, and the other end of the second drainage pipe is provided with a fourth internal thread.

[0019] Furthermore, the first semi - disc is provided with a limiting block, and the second semi - disc is provided with a limiting groove matching the limiting block. In the assembled state, the limiting block of the first semi - disc matches the limiting groove of the second semi - disc.

[0020] The beneficial effect of the present utility model is that: compared with the prior art, it avoids the high - pressure air driving the water flow to scour the blast hole wall, thus preventing the collapse of the blast hole. Description of the Drawings

[0021] Figure 1 Schematic diagram of the structure of a water - blowing device for water - accumulated blast holes in open - pit mines, which is a specific embodiment of the present utility model;

[0022] Figure 2 Explosion structure diagram of a water - blowing device for water - accumulated blast holes in open - pit mines, which is a specific embodiment of the present utility model;

[0023] Figure 3 Explosion structure diagram of a water - blowing device for water - accumulated blast holes in open - pit mines, which is a specific embodiment of the present utility model;

[0024] Figure 4 is Figure 3 Enlarged view of part A of

[0025] Label description

[0026] 1. Mobile air compressor; 11. Air outlet pipe;

[0027] 2. Ball valve;

[0028] 3. Duct; 31. Oblique cutting end;

[0029] 4. First semi - disc; 41. First drainage pipe; 411. First internal thread; 412. Third internal thread; 42. First fixing device; 421. Convex block; 4211. Through hole; 422. Screw; 43. Limit block;

[0030] 5. Second semi - disc; 51. Second drainage pipe; 511. Second internal thread; 512. Fourth internal thread; 52. Second fixing device; 53. Limit groove;

[0031] 6. First external water pipe; 61. First external thread;

[0032] 7. Second external water pipe; 62. Second external thread. Specific embodiment

[0033] To describe in detail the technical content, achieved purpose and effects of the present utility model, the following is described in conjunction with the embodiments and with reference to the drawings.

[0034] Please refer to Figures 1 to 4 , a water - blowing device for water - accumulated blast holes in open - pit mines, comprising:

[0035] A mobile air compressor 1, on which there is an air outlet pipe 11;

[0036] A ball valve 2, one end of which is threadedly connected to the air outlet pipe 11;

[0037] A duct 3, one end of which is connected to the other end of the ball valve 2;

[0038] The first semi - disc 4 is provided with a first hoop matching the conduit 3. The first semi - disc 4 is provided with a first drainage pipe 41. The outer circumference of the first semi - disc 4 is provided with a first fixing device 42, and the first fixing device 42 is used to fix the first semi - disc 4 at the outlet of the blast hole.

[0039] The second semi - disc 5 is provided with a second hoop matching the conduit 3. The second semi - disc 5 is provided with a second drainage pipe 51. The outer circumference of the second semi - disc 5 is provided with a second fixing device 52, and the second fixing device 52 is used to fix the second semi - disc 5 at the outlet of the blast hole.

[0040] The first external water pipe 6 is connected to the first drainage pipe 41.

[0041] The second external water pipe 7 is connected to the second drainage pipe 51.

[0042] During assembly, one end of the first external water pipe 6 extends into the bottom of the blast hole, one end of the second external water pipe 7 extends into the bottom of the blast hole. The first hoop and the second hoop tightly connect the conduit 3. The first semi - disc 4 and the second semi - disc 5 form a disc, and through the first fixing device 42 and the second fixing device 52, the disc seals the outlet of the blast hole.

[0043] In the above - mentioned embodiments, it should be noted that the threaded connection between the mobile air compressor 1 and the ball valve 2 is prior art and will not be elaborated here.

[0044] By inserting the conduit 3 into the accumulated water in the blast hole, then extending one end of the first external water pipe 6 into the bottom of the blast hole, extending one end of the second external water pipe 7 into the bottom of the blast hole, and then assembling the first semi - disc 4 and the second semi - disc 5, so that the first hoop and the second hoop tightly connect the conduit 3, the first fixing device and the second fixing device seal the disc at the outlet of the blast hole. Then turn on the mobile air compressor 1. When the mobile air compressor 1 reaches the rated value, open the ball valve 2 switch. The high - pressure gas is discharged into the bottom of the blast hole through the conduit 3. Under the action of the high - pressure gas, the accumulated water in the hole will be discharged from the inner wall of the blast hole through the first external water pipe 6 and the second external water pipe 7. Compared with the prior art, it avoids the erosion of the blast hole wall by the water flow driven by the high - pressure air, thus preventing the collapse of the blast hole.

[0045] As an alternative embodiment, one end of the first drainage pipe 41 is provided with a first internal thread 411, and one end of the first external water pipe 6 is provided with a first external thread 61 connected to the first internal thread 411.

[0046] In the above embodiments, the first external water pipe 6 can be threadedly connected to the first drainage pipe 41, enabling the first external water pipe 6 to be detachably connected to the first semi - disc 4. Furthermore, based on observing or measuring the length of the blast hole, an external water pipe of an appropriate length can be selected, facilitating better drainage of the accumulated water in the blast hole.

[0047] As an alternative embodiment, one end of the second drainage pipe 51 is provided with a second internal thread 511, and one end of the second external water pipe 7 is provided with a second external thread 62 that is connected to the second internal thread 511.

[0048] In the above embodiments, the second external water pipe 7 can be threadedly connected to the second drainage pipe 51, enabling the second external water pipe 7 to be detachably connected to the second semi - disc 5. Furthermore, based on observing or measuring the length of the blast hole, an external water pipe of an appropriate length can be selected, facilitating better drainage of the accumulated water in the blast hole.

[0049] As an alternative embodiment, the other end of the conduit 3 is a bevel - cut end 31, and the cutting angle is 45°.

[0050] In the above embodiments, when the conduit 3 is inserted into the bottom of the blast hole, the phenomenon of pipeline blockage can be avoided.

[0051] As an alternative embodiment, the first fixing device 42 includes a convex block 421 and a screw 422. There is a convex block 421 on the outer circumference of the first semi - disc 4, and a through - hole 4211 matching the screw 422 is provided on the convex block 421. The structure of the second fixing device 52 is the same as that of the first fixing device 42.

[0052] In the above embodiments, by driving the screw 422 through the through - hole 4211 on the convex block 421 and into the ground around the outlet end of the blast hole, the assembled disc formed by the first semi - disc 4 and the second semi - disc 5 can be fixed at the blast hole outlet. Furthermore, the conduit 3 can be stabilized, thereby maintaining high - pressure air blowing into the blast hole.

[0053] As an alternative embodiment, the other end of the first drain pipe is provided with a third internal thread 412, and the other end of the second drain pipe is provided with a fourth internal thread 512.

[0054] In the above embodiments, by selecting an external water pipe that is threadedly connected to the third internal thread 412 and the fourth internal thread 512 and placing one end of the external connecting pipe away from the first semi - disc 4 and the second semi - disc 5, better drainage of the blast hole can be achieved.

[0055] As an alternative embodiment, the first semi - disc 4 is provided with a limiting block 43, and the second semi - disc 5 is provided with a limiting groove 53 that matches the limiting block 43. In the assembled state, the limiting block 43 of the first semi - disc 4 matches the limiting groove 53 of the second semi - disc 5.

[0056] In the above embodiments, through the matching connection between the limiting block 43 and the limiting groove 53, the gap at the joint of the first semi-circular disc 4 and the second semi-circular disc 5 is sealed, further ensuring the airtightness of the blast hole.

[0057] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An open-pit mine waterlogged blast hole water blowing device, characterized in that, Comprising: A mobile air compressor, on which an air outlet pipe is provided; A ball valve, one end of which is threadedly connected to the air outlet pipe; A conduit, one end of which is connected to the other end of the ball valve; A first semi-disc, on which a first hoop matching the conduit is provided, a first drainage pipe is provided on the first semi-disc, and a first fixing device is provided on the outer circumference of the first semi-disc, and the first fixing device is used to fix the first semi-disc at the outlet of the blast hole; A second semi-disc, on which a second hoop matching the conduit is provided, a second drainage pipe is provided on the second semi-disc, and a second fixing device is provided on the outer circumference of the second semi-disc, and the second fixing device is used to fix the second semi-disc at the outlet of the blast hole; A first external water pipe, which is connected to the first drainage pipe; A second external water pipe, which is connected to the second drainage pipe; During assembly, one end of the first external water pipe extends into the bottom of the blast hole, one end of the second external water pipe extends into the bottom of the blast hole, the first hoop and the second hoop tightly connect the conduit, the first semi-disc and the second semi-disc form a disc, and through the first fixing device and the second fixing device, the disc seals the outlet of the blast hole.

2. The water-blowing device for accumulated water blast holes in open-pit mines according to claim 1, wherein One end of the first drainage pipe is provided with a first internal thread, and one end of the first external water pipe is provided with a first external thread connected to the first internal thread.

3. The open-pit mine water-accumulated blast hole water blowing device according to claim 1, wherein One end of the second drainage pipe is provided with a second internal thread, and one end of the second external water pipe is provided with a second external thread connected to the second internal thread.

4. The open-pit mine waterlogged blast hole water blowing device according to claim 1, characterized in that The other end of the conduit is a beveled end, and the cutting angle is 45°.

5. The open-pit mine waterlogged blast hole water blowing device according to claim 1, characterized in that, The first fixing device includes a convex block and a screw. There is a convex block on the outer circumference of the first semi-disc, and a through hole matching the screw is provided on the convex block. The structure of the second fixing device is the same as that of the first fixing device.

6. The water-jetting device for accumulated water blast holes in open-pit mines according to claim 2, characterized in that The other end of the first drainage pipe is provided with a third internal thread, and the other end of the second drainage pipe is provided with a fourth internal thread.

7. The water-blowing device for waterlogged blast holes in open-pit mines according to claim 1, wherein A limiting block is provided on the first semi-disc, and a limiting groove matching the limiting block is provided on the second semi-disc. In the assembled state, the limiting block of the first semi-disc matches the limiting groove of the second semi-disc.

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