A positioning device and retrieval method for a broken drill bit

Abstract

The present invention relates to a positioning device and a retrieval method for a broken drill bit, including a main positioning device. The main positioning device includes a housing, a sealing plug, a push rod, and a positioning display agent. An upper cavity and a lower cavity that are not connected to each other are formed inside the housing. The housing also forms a discharge hole communicating with the lower cavity. The sealing plug is detachably and sealingly connected to the discharge hole. The push rod is arranged outside the housing and fixedly connected to the sealing plug. The positioning display agent is respectively placed in the upper cavity and the lower cavity. The retrieval method for the broken drill bit includes the following steps: S1. Place the main positioning device into the first blast hole where the broken drill bit is located with the push rod facing downwards; S2. Pour sealing soil into the first blast hole to cover the main positioning device and seal the opening; S3. Conduct blasting, and search for the broken drill bit according to the overflowing positioning display agent after blasting. The positioning device for the broken drill bit provided by the present invention avoids the loss of the positioning display agent during falling by installing the positioning display agent in the housing, and reduces the usage amount of the positioning display agent.

Description

Technical Field

[0001] The present invention relates to the technical field of blasting structures, and particularly to a positioning device and retrieval method for a broken drill bit. Background Art

[0002] As the most effective rock-breaking means, perforation blasting is widely used in the production of open-pit mines. However, during the drilling process, due to factors such as equipment quality problems, improper operation during work, or unreasonable drilling parameters, the situation where the drill bit breaks and falls into the blast hole and cannot be taken out in time often occurs. The existing treatment methods mostly involve workers marking the blast hole where the drill bit has broken, and searching according to the marked position after blasting. However, during the blasting process, the upper and lower rock layers will move relative to each other under the action of blasting shock. The greater the hole depth, the greater the position difference between the marker and the broken drill bit, and the position of the marker will also change during the blasting process. Therefore, this method has low efficiency and poor practicability. If the broken drill bit is not properly handled and cannot be found in time and enters the concentrator with the ore, it will delay the production progress and even damage the concentrator equipment, causing huge economic losses.

[0003] Currently, for the positioning method of a broken drill bit, the application publication number CN113216941A discloses a positioning device and implementation structure and method for finding a broken down-the-hole drill bit. The method adopted is to pour a colored reflective substance into the bottom of the blast hole to immerse the drill bit. This method inevitably pours the colored reflective substance on the inner wall of the blast hole. Therefore, in order to ensure that the colored reflective substance can immerse the drill bit, an excessive amount of colored reflective substance is usually added. And the deeper the blast hole, the greater the amount of colored reflective substance used. And the addition amount of the colored reflective substance is also estimated by the operator according to experience, and there is still a possibility that the addition amount is insufficient and the dyeing effect of the drill bit is not good. Summary of the Invention

[0004] In view of this, it is necessary to provide a positioning device and retrieval method for a broken drill bit to solve the technical problem of a large amount of colored reflective substance used and serious waste in the prior art.

[0005] The present invention provides a positioning device for a broken drill bit. The positioning device for a broken drill bit includes: a main positioning device, the main positioning device includes a housing, a sealing plug, a top rod, and a positioning display agent. An upper cavity and a lower cavity that are not connected to each other are formed in the housing. The housing also forms a discharge hole communicating with the lower cavity. The sealing plug is detachably and sealingly connected to the discharge hole. The top rod is arranged outside the housing and fixedly connected to the sealing plug. The positioning display agent is respectively placed in the upper cavity and the lower cavity.

[0006] Further, the positioning display agent is composed of a colored reflective powder, a luminous powder, a thickening powder, sand, and water.

[0007] Furthermore, the main positioning device also includes a storage bag, which is built into the upper cavity and covers the positioning indicator.

[0008] Furthermore, the shell includes an upper part and a lower part which are detachably connected, the upper part has an upper cavity, and the lower part and the upper part together form a lower cavity.

[0009] Furthermore, the upper portion is cylindrical and an end away from the lower portion forms an upper opening connected to the upper cavity.

[0010] Furthermore, the lower part is a conical structure, the bottom surface of which forms a lower opening connected to the lower cavity, and the upper part is detachably connected to the lower opening to close the lower opening.

[0011] Furthermore, the discharge hole is formed at the top of the conical structure, and the top rod is coaxially arranged with the lower part.

[0012] Furthermore, it also includes an auxiliary positioning device, which includes a packaging bag and a dye built into the packaging bag.

[0013] The present invention provides a method for recovering a broken drill bit, which comprises the following steps: S1, placing a main positioning device into a first blast hole where the broken drill bit is located in a manner in which a push rod faces downward, the main positioning device falling under the action of gravity until the push rod hits the broken drill bit to push the sealing plug to separate from the discharge hole, and a positioning indicator in a lower cavity flows out and adheres to the broken drill bit; S2, pouring sealing soil into the first blast hole to cover the main positioning device and seal it; S3, performing blasting, and after the blasting, finding the broken drill bit according to the overflowed positioning indicator.

[0014] Furthermore, step S1 also includes placing an auxiliary positioning device in a second blast hole around the first blast hole; step S2 also includes pouring covering soil into the second blast hole to cover the auxiliary positioning device and seal it.

[0015] Compared with the prior art, the broken drill bit locating device prevents the positioning indicator from being lost when falling by installing the positioning indicator in the shell.

[0016] The method for retrieving a broken drill bit places the main positioning device in the blasthole where the drill hole is located. The discharge hole is opened only after the push rod collides with the drill bit, allowing the positioning indicator to flow out and adhere to the broken drill bit. During the entire falling process, no positioning indicator will be contaminated on the side wall of the blasthole to cause waste, thereby reducing the amount of positioning indicator used and ensuring that the positioning indicator can fully flow to the drill bit to obtain a good dyeing effect.

[0017] The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and be implemented in accordance with the content of the specification, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The specific implementation manners of the present invention are given in detail by the following embodiments and their accompanying drawings. Description of the Drawings

[0018] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the main positioning device of the broken drill bit positioning device provided by the present invention;

[0020] Figure 2 is a schematic structural diagram of the auxiliary positioning device of the broken drill bit positioning device provided by the present invention;

[0021] Figure 3 is a schematic structural diagram of the main positioning device placed in the first blast hole;

[0022] Figure 4 is a schematic structural diagram of the auxiliary positioning device placed in the second blast hole;

[0023] Figure 5 is a distribution diagram of the first blast hole and the second blast hole. Detailed Description of the Preferred Embodiments

[0024] The following will specifically describe the preferred embodiments of the present invention in conjunction with the accompanying drawings. Among them, the accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principle of the present invention, and are not used to limit the scope of the present invention.

[0025] This broken drill bit positioning device includes a main positioning device 1.

[0026] Please refer to Figure 1 , the main positioning device 1 includes a housing 11, a sealing plug 12, a top rod 13 and a positioning indicator 14. Among them, an upper cavity and a lower cavity that are not connected to each other are formed in the housing 11. The housing 11 also forms a discharge hole communicating with the lower cavity. The sealing plug 12 is detachably and sealingly connected to the discharge hole to close the discharge hole. The top rod 13 is arranged outside the housing 11 and fixedly connected to the sealing plug 12. The positioning indicator 14 is respectively placed in the upper cavity and the lower cavity.

[0027] In this embodiment, the housing 11 includes a detachable upper part 111 and a lower part 112. The upper part 111 has an upper cavity, and the lower part 112 and the upper part 111 enclose to form a lower cavity.

[0028] In a preferred embodiment, the upper part 111 has a cylindrical structure, and its diameter is preferably slightly smaller than the size of the blast hole. In this way, during the process of the main positioning device 1 falling in the blast hole, its attitude can remain basically unchanged without flipping. The upper part 111 also forms an upper opening communicating with the upper cavity at one end far from the lower part 112, and the upper opening is used to add the positioning display agent 14 into the upper cavity.

[0029] The lower part 112 has a conical structure, its bottom surface faces the upper part 111 and forms a lower opening communicating with the lower cavity. Similarly, the lower opening is used to add the positioning display agent 14 into the lower cavity, and the upper part 111 is detachably connected to the lower opening to seal the lower opening. The discharge hole is preferably opened at the top of the conical structure, and the ejector rod 13 is coaxially arranged with the lower part 112.

[0030] The positioning display agent 14 adheres to the drill bit to facilitate the staff to find it. Therefore, in a preferred embodiment, the positioning display agent 14 is composed of colored reflective powder, luminous powder, thickening powder, sand and water. During the day, the colored reflective powder can reflect colored light, facilitating the staff to find it from the ore pile. At night, the luminous powder can emit fluorescence, which is also convenient for the staff to find. The main function of the thickening powder is to increase the viscosity of the system, so that the system maintains a uniform and stable suspension state or emulsion state, or forms a gel. Commonly used thickening powders include starch and modified starch, agar, pectin, gelatin, sodium carboxymethyl cellulose, alginic acid and its salts and esters, etc. Those skilled in the art can select flexibly according to the actual situation.

[0031] In a preferred embodiment, the main positioning device 1 further includes a storage bag 15, and the storage bag 15 is placed inside the upper cavity and wraps the positioning display agent. That is, the positioning display agent 14 in the upper cavity is in a bagged state. First, the positioning display agent 14 is loaded into the storage bag 15, the opening of the storage bag 15 is tied tightly, and then the storage bag 15 is put into the upper cavity. In this way, during the process of the main positioning device 1 falling, the positioning display agent 14 in the upper cavity will not spill out.

[0032] Please refer to Figure 2 , in a preferred embodiment, the drill bit breakage positioning device of the present invention further includes an auxiliary positioning device 2, and the auxiliary positioning device 2 includes a packaging bag 21 and a dyeing agent 22 placed inside the packaging bag 21. The packaging bag 21 is preferably long strip-shaped to adapt to the shape of the blast hole.

[0033] Please refer to Figures 3 to 5 , the method for retrieving the broken drill bit of the present invention includes the following steps: S1. Place the main positioning device 1 into the first blast hole 40 where the broken drill bit 30 is located with the ejector rod 13 facing downwards. The main positioning device 1 falls under the action of gravity until the ejector rod 13 hits the broken drill bit 30 to push the sealing plug 12 away from the discharge hole, and the positioning display agent 14 in the lower cavity flows out and adheres to the broken drill bit 30.

[0034] In a preferred embodiment, the auxiliary positioning device 2 can also be placed in the second blast hole 50 around the first blast hole 40. In blasting operations, blast holes are generally evenly drilled at equal intervals. Figure 5 This is one of the forms. There is a circle of second blast holes 50 around the first blast hole 40, which can play an auxiliary indicating role for the position of the first blast hole 40.

[0035] S2. Pour the sealing soil 60 into the first blast hole 40 to cover the main positioning device 1 and seal the opening. Correspondingly, the sealing soil 60 should also be poured into the second blast hole 50 to cover the auxiliary positioning device 2 and seal the opening. The specific operation is that after the explosive is loaded into the second blast hole 50, add the sealing soil into the second blast hole 50 to cover the explosive, then place the auxiliary positioning device 2, and then add the sealing soil into the second blast hole 50 to cover the auxiliary positioning device. The auxiliary positioning device 2 is close to the orifice of the second blast hole 50.

[0036] S3. Conduct blasting. After blasting, search for the broken drill bit 30 according to the spilled positioning indicator 14 and the dye 22.

[0037] Since the auxiliary positioning device 2 is closer to the orifice of the blast hole than the main positioning device 1, after blasting, the dye 22 in the auxiliary positioning device 2 is sprayed onto the ore on the rock surface, indicating the general direction of the broken drill bit 30 to the staff to guide the excavation direction. The positioning indicator 14 in the lower cavity of the main positioning device 1 impregnates the broken drill bit 30, and the positioning indicator 14 in the upper cavity is sprayed onto the ore near the broken drill bit 30 under the action of the blasting impact force. When excavating, if it is found that the positioning indicator 14 adheres to the ore, it means that the position of the broken drill bit 30 is very close, and it can be carefully searched for.

[0038] The broken drill bit positioning device provided by the present invention avoids the loss of the positioning indicator during falling by installing the positioning indicator in the housing. The method for retrieving the broken drill bit places the main positioning device into the blast hole where the drill hole is located. Only after the ejector rod collides with the drill bit will the discharge hole be opened to allow the positioning indicator to flow out and adhere to the broken drill bit. During the entire falling process, no positioning indicator will be contaminated on the side wall of the blast hole, resulting in waste. This reduces the amount of the positioning indicator used and also ensures that the positioning indicator can fully flow onto the drill bit to obtain a good dyeing effect.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A positioning device for a broken drill bit, characterized in that, It includes: The main positioning device, which includes a housing, a sealing plug, a push rod and a positioning indicator. An upper cavity and a lower cavity that do not communicate with each other are formed in the housing. The housing also forms a discharge hole communicating with the lower cavity. The sealing plug is detachably and sealingly connected to the discharge hole. The push rod is arranged outside the housing and fixedly connected to the sealing plug. The positioning indicators are respectively placed in the upper cavity and the lower cavity. The positioning indicator in the lower cavity impregnates the broken drill bit, and the positioning indicator in the upper cavity is sprayed onto the ore near the broken drill bit under the action of the blasting impact force; The auxiliary positioning device, which includes a packaging bag and a coloring agent placed inside the packaging bag.

2. The lost drill bit positioning device according to claim 1, characterized in that, The positioning indicator is composed of a colored reflective powder, a luminous powder, a thickening powder, sand and water.

3. The broken drill bit positioning device according to claim 1, characterized in that, The main positioning device further includes a storage bag, which is placed inside the upper cavity and covers the positioning indicator.

4. The broken drill bit positioning device according to claim 3, characterized in that, The housing includes a detachable upper part and a lower part. The upper part has the upper cavity, and the lower part and the upper part enclose to form the lower cavity.

5. The positioning device for a broken drill bit according to claim 4, characterized in that, The upper part is cylindrical, and an upper opening communicating with the upper cavity is formed at one end far from the lower part.

6. The positioning device for the broken drill bit according to claim 4, wherein, The lower part is a conical structure, and a lower opening communicating with the lower cavity is formed at its bottom surface. The upper part is detachably connected to the lower opening to close the lower opening.

7. The positioning device for the broken drill bit according to claim 6, wherein, The discharge hole is formed at the top of the conical structure, and the push rod is arranged coaxially with the lower part.

8. A method for retrieving a broken drill bit, which uses the broken drill bit positioning device described in any one of claims 1-7, characterized in that, It includes the following steps: S1. Place the main positioning device into the first blast hole where the broken drill bit is located with the push rod facing down. The main positioning device falls under the action of gravity until the push rod hits the broken drill bit to push the sealing plug away from the discharge hole, and the positioning indicator in the lower cavity flows out and adheres to the broken drill bit; S2. Pour earth filling into the first blast hole to cover the main positioning device and seal the opening; S3. Conduct blasting, and search for the broken drill bit according to the spilled positioning indicator after blasting.

9. The method for retrieving a broken drill bit according to claim 8, wherein, Step S1 further includes placing the auxiliary positioning device into the second blast hole around the first blast hole; Step S2 further includes pouring earth filling into the second blast hole to cover the auxiliary positioning device and seal the opening.

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