A borehole cleaning device

Abstract

This invention relates to the field of borehole cleaning technology and discloses a borehole cleaning device, including a controller, a blower, a casing, and a pipe assembly. The pipe assembly is disposed inside the casing, and several air outlets are opened on the outer wall of the casing. The air outlets are arranged sequentially at intervals along the length of the casing. One end of the pipe assembly is connected to the air outlet of the blower, and the other end of the pipe assembly is connected to each air outlet and the end of the casing away from the blower. The controller is electrically connected to the blower. The controller is used to control the blower when the end of the casing away from the blower is inserted into the borehole, so that the air outlets in the casing away from the blower exit first, and then the air outlets exit sequentially from the end of the casing away from the blower toward the blower. In the technical solution proposed by this invention, the pipe assembly is sent into the borehole, and after the air outlets in the casing away from the blower exit first, the air outlets exit sequentially from low to high. Through a step-by-step pressurization method, various impurities in the borehole are blown out from the bottom to the top of the borehole, minimizing the impact of impurities on subsequent blasting operations.

Description

Technical Field

[0001] This invention relates to the field of borehole cleaning technology, and in particular to a borehole cleaning device. Background Technology

[0002] Blasting is a technique that uses the energy of an explosion to break, move, or demolish materials. This technology is widely used in mining, construction, road building, tunnel excavation, demolition of old buildings, and other structural engineering projects. It can efficiently handle large quantities of hard rock or concrete, facilitating subsequent work.

[0003] Blasting operations are widely used in mining resources such as metal ores and coal; when constructing new large-scale infrastructure such as high-rise buildings and bridges, it may be necessary to modify the terrain or remove obstacles; especially in mountainous areas, blasting can open up passages; and it is indispensable for projects such as underground transportation lines (subways) and hydroelectric power station water diversion tunnels.

[0004] In engineering fields such as mining and tunneling, blasting operations have become a crucial component. Blasting operations require drilling a certain number and depth of boreholes at predetermined locations according to the design plan, and then placing explosives within these boreholes as specified. During the drilling process, rock dust, rock debris, and water accumulation are inevitably generated. Currently, traditional drill pipe water supply systems are generally used to remove debris from the boreholes. However, while the removal of debris is effective, impurities within the borehole can affect the placement of explosives and the detonation efficiency. Therefore, the effectiveness of debris removal directly impacts the efficiency of the blasting operation. Summary of the Invention

[0005] The main objective of this invention is to provide a borehole cleaning device that addresses the problem of limited removal efficiency of residue inside blast holes, which affects the efficiency of blasting operations.

[0006] To achieve the above objectives, the technical solution proposed by this invention is as follows:

[0007] A borehole cleaning device includes a controller, a blower, a casing, and a pipe assembly. The pipe assembly is disposed inside the casing, and a plurality of air outlets are formed on the outer wall of the casing. The air outlets are arranged sequentially at intervals along the length of the casing. One end of the pipe assembly is connected to the air outlet of the blower, and the other end of the pipe assembly is connected to each of the air outlets and the end of the casing away from the blower. The controller is electrically connected to the blower. The controller is used to control the blower when the end of the casing away from the blower is inserted into the borehole, so that the end of the casing away from the blower emits air first, and then each of the air outlets emits air sequentially from the end of the casing away from the blower toward the blower.

[0008] Preferably, the borehole cleaning device further includes a heater, a water pump, and a water pipe. The heater is used to heat the gas blown out by the blower. The water pump is connected to one end of the water pipe. The water pipe is disposed inside the casing, and the other end of the water pipe passes through the casing at the end away from the blower. The controller is electrically connected to the water pump, and the controller is used to control the water pump when the end of the casing away from the blower is inserted into the borehole, so that the water accumulated in the borehole is pumped out of the borehole through the water pipe.

[0009] Preferably, the pipe assembly includes a main pipe and several connecting pipes. The main pipe and each of the connecting pipes are disposed inside the sleeve. One end of the main pipe and one end of each connecting pipe are connected to the air outlet of the fan. The end of the main pipe away from the fan is connected to the end of the sleeve away from the fan. The ends of each connecting pipe away from the fan are sequentially connected to each of the air outlets.

[0010] Preferably, a plurality of centering limiters are fitted on the outer wall of the sleeve, and each centering limiter is arranged sequentially at intervals along the length of the sleeve. Each centering limiter is used to maintain the stability of the sleeve when air is discharged from each of the air outlets at the end of the sleeve away from the fan.

[0011] Preferably, the number of air outlets is the same as the number of connecting pipes, and the number of air outlets is proportional to the length of the sleeve; the centering limiter is proportional to the length of the sleeve.

[0012] Preferably, the drilling and cleaning mechanism further includes a connecting sleeve, a first moving part, and a pipe lowering mechanism. The fan, the heater, and the water pump are all disposed on the first moving part. The end of the casing away from the casing and the main pipe is connected to the first moving part through the connecting sleeve. The pipe lowering mechanism is driven and connected to the casing, and is used to send the casing into the blast hole. The controller is electrically connected to the first moving part and the pipe lowering mechanism respectively, and is used to control the first moving part and the pipe lowering mechanism respectively. When the pipe lowering mechanism sends the casing into the blast hole, the first moving part moves towards the pipe lowering mechanism.

[0013] Preferably, the tube lowering mechanism includes a second mover, a servo motor, a coil, and several connecting plates. The servo motor and the coil are both mounted on the second mover. The servo motor drives the coil to rotate. Each connecting plate is mounted on the rotating surface of the coil and is spaced apart sequentially along the rotation direction. The controller is electrically connected to both the second mover and the servo motor. The controller controls the second mover to move the sleeve to a preset position around the borehole. The controller also controls the servo motor to move the coil away from the first mover when the second mover moves the sleeve to the preset position around the borehole, so that each connecting plate sequentially pushes the outer wall of the sleeve, inserting the sleeve into the borehole.

[0014] Preferably, a rangefinder is provided on the side of the first locator facing the lowering mechanism, and the controller is electrically connected to the rangefinder. The rangefinder is used to obtain the interval distance between the first locator and the lowering mechanism and send it to the controller. The controller is used to obtain the depth distance of the borehole, and then control the first locator and the lowering mechanism respectively according to the depth distance and the interval distance, so that the end of the casing away from the fan is set close to the bottom side of the borehole.

[0015] Preferably, the connecting sleeve includes a fixed frame, a track, two sliders, two fixed frames, and several tension springs. The fixed frame is located on the top side of the first locator, and the fan, the heater, and the water pump are all located on the same side of the fixed frame. The track is located on the side of the fixed frame away from the first locator and extends away from the fan. The two sliders are slidably connected to the track, and one fixed frame is located on one of the sliders, while the other fixed frame is located on the other slider. The sleeve connects to the fixed frame away from the fan, and the main pipe, the water pipe, and each connecting pipe pass through the two fixed frames in sequence. Each tension spring is located between the two fixed frames, with one end of each tension spring connected to one of the fixed frames and the other end connected to the other fixed frame. Each tension spring is arranged around the main pipe, the water pipe, and each connecting pipe.

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

[0017] The pipe assembly is fed into the blast hole through the casing. After the casing, which is farthest from the blower, first blows air out, and then blows air out of each outlet in sequence from low to high. By gradually increasing the pressure, various impurities in the blast hole are blown out from the bottom to the top of the blast hole, minimizing the impact of impurities on subsequent blasting operations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of an embodiment of the borehole cleaning device of the present invention;

[0020] Figure 2 A schematic diagram of the connection between the pipe assembly and the sleeve;

[0021] Figure 3 This is a schematic diagram of the internal structure of the pipe assembly and sleeve connection.

[0022] Explanation of icon numbers:

[0023] 1-First mover; 11-Fan; 12-Heater; 13-Water pump; 14-Distance measuring device;

[0024] 2-Sleeve; 21-Air outlet; 22-Water pipe; 23-Filter screen; 24-Sealing plate; 25-Connecting through hole;

[0025] 3-Pipe assembly; 31-Main pipe; 32-Connecting pipe;

[0026] 4-Centering limiter; 41-Fixing ring; 42-Limit block;

[0027] 5-Connecting sleeve; 51-Fixing bracket; 52-Railway; 53-Slider; 54-Fixing frame; 55-Tension spring;

[0028] 6-Lower tube mechanism; 61-Second mover; 62-Servo motor; 63-Cable reel; 64-Connecting plate;

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0035] This invention proposes a borehole cleaning device.

[0036] like Figure 1 and Figure 3 The drilling and cleaning device shown includes a controller, a blower 11, a casing 2, and a pipe assembly 3. The pipe assembly 3 is disposed inside the casing 2. Several air outlets 21 are opened on the outer wall of the casing 2. The air outlets 21 are arranged sequentially at intervals along the length of the casing 2. One end of the pipe assembly 3 is connected to the air outlet 21 of the blower 11, and the other end of the pipe assembly 3 is connected to each air outlet 21 and the end of the casing 2 away from the blower 11. The controller is electrically connected to the blower 11. The controller is used to control the blower 11 when the end of the casing 2 away from the blower 11 is inserted into the blast hole, so that the end of the casing 2 away from the blower 11 emits air first, and then each air outlet 21 emits air sequentially from the end of the casing 2 away from the blower 11 toward the blower 11.

[0037] The pipe assembly 3 is sent into the blast hole through the sleeve 2. After the sleeve 2 is far away from the blower 11 and the air comes out first, the air outlets 21 are made to come out in sequence from low to high. By gradually increasing the pressure, various impurities in the blast hole are blown out from the blast hole from bottom to top, minimizing the impact of impurities on the subsequent blasting operation.

[0038] The borehole cleaning device also includes a heater 12, a water pump 13, and a water pipe 22. The heater 12 heats the gas blown out by the blower 11. The water pump 13 is connected to one end of the water pipe 22. The water pipe 22 is installed inside the casing 2, with the other end of the water pipe 2 passing through the end of the casing 2 furthest from the blower 11. A controller is electrically connected to the water pump 13. The controller controls the water pump 13 when the end of the casing 2 furthest from the blower 11 is inserted into the borehole, so that the water accumulated in the borehole is pumped out through the water pipe 22. The cooperation of the water pump 13 and the water pipe 22 pumps out the water accumulated in the borehole. The cooperation of the pipe assembly 3, the heater 12, and the blower 11 enables rapid drying of the borehole, preventing residual water in the borehole from affecting subsequent blasting.

[0039] Specifically, a filter screen 23 is installed at the end of the water pipe 22 that is away from the water pump 13.

[0040] Pipe assembly 3 includes a main pipe 31 and several connecting pipes 32. The main pipe 31 and each connecting pipe 32 are installed inside the sleeve 2. One end of the main pipe 31 and one end of each connecting pipe 32 are connected to the air outlet 21 of the ventilator 11. The end of the main pipe 31 away from the ventilator 11 is connected to the end of the sleeve 2 away from the ventilator 11. The ends of each connecting pipe 32 away from the ventilator 11 are connected to each air outlet 21 in sequence.

[0041] Specifically, a sealing plate 24 is provided at the end of the sleeve 2 away from the blower 11. The sealing plate 24 has two connecting through holes 25. The end of the main pipe 31 away from the blower 11 is connected to one of the connecting through holes 25. The end of the water pipe 22 away from the water pump 13 passes through the other connecting through hole 25. The sealing plate 24 can prevent impurities from entering the sleeve 2.

[0042] Specifically, the controller is used to obtain the number of blast holes and at least two fan control schemes, determine at least two test blast holes based on the number of blast holes, determine a detection scheme based on each test blast hole and each fan control scheme, determine the working efficiency of each fan control scheme based on the detection scheme, determine the optimal scheme based on each working efficiency, and control the fan 11 according to the optimal scheme so that the fan 11 performs cleaning operations on the remaining blast holes according to the optimal scheme.

[0043] Specifically, the fan control scheme includes a historical scheme and a setting scheme. The historical scheme is the operation scheme of the fan 11 used in previous blast holes of the same size as the current blast hole; the setting scheme is the operation scheme of the fan 11 input to the controller from the field.

[0044] Specifically, the fan control scheme includes at least the air pressure of each air outlet 21 and the air outlet time of each air outlet 21.

[0045] Several centering limiters 4 are fitted onto the outer wall of the sleeve 2. These centering limiters 4 are spaced apart along the length of the sleeve 2. Each centering limiter 4 is used to maintain the stability of the sleeve 2 when air is discharged from the air outlets 21 at the end of the sleeve 2 furthest from the blower 11. The centering limiters 4 are designed to reduce the swaying amplitude of the sleeve 2 when cleaning the blast holes, preventing the swaying sleeve 2 from blocking impurities from being blown out of the blast holes and ensuring effective cleaning.

[0046] Specifically, the centering limiter 4 includes a fixing ring 41 and several limiting blocks 42. The fixing ring 41 is sleeved on the sleeve 2, and the limiting blocks 42 are arranged sequentially and at intervals along the outer wall of the fixing ring 41, forming a cleaning gap between adjacent limiting blocks 42. The fixing ring 41, through the limiting blocks 42, conforms to the inner wall of the borehole, minimizing the swaying of the sleeve 2 due to wind pressure during borehole cleaning, thereby preventing the sleeve 2 from affecting the cleaning effect. The cleaning gap is used to allow impurities to pass through.

[0047] The number of air outlets 21 is the same as the number of connecting pipes 32, and the number of air outlets 21 is proportional to the length of the sleeve 2; the centering limiter 4 is proportional to the length of the sleeve 2.

[0048] The drilling and cleaning mechanism also includes a connecting sleeve 5, a first moving device 1, and a lowering mechanism 6. A fan 11, a heater 12, and a water pump 13 are all located on the first moving device 1. The end of the casing 2 furthest from the main pipe 31 is connected to the first moving device 1 via the connecting sleeve 5. The lowering mechanism 6 drives the connecting casing 2 and is used to feed the casing 2 into the borehole. A controller is electrically connected to both the first moving device 1 and the lowering mechanism 6, and is used to control both. When the lowering mechanism 6 feeds the casing 2 into the borehole, the first moving device 1 moves towards the lowering mechanism 6. The cooperation between the first moving device 1 and the lowering mechanism 6 assists in the movement of the casing 2 on the ground and in and out of the borehole. The cooperation between the first moving device 1 and the lowering mechanism 6 can accommodate casings of various sizes.

[0049] The tube lowering mechanism 6 includes a second mover 61, a servo motor 62, a wire reel 63, and several connecting plates 64. The servo motor 62 and the wire reel 63 are both mounted on the second mover 61. The servo motor 62 drives the wire reel 63 to rotate. Each connecting plate 64 is mounted on the rotating surface of the wire reel 63 and is spaced apart sequentially along the rotation direction. The controller is electrically connected to the second mover 61 and the servo motor 62. The controller controls the second mover 61 to drive the sleeve 2 to a preset position around the borehole. The controller also controls the servo motor 62 to drive the wire reel 63 to move away from the first mover 1 when the second mover 61 drives the sleeve 2 to the preset position around the borehole, so that each connecting plate 64 sequentially pushes the outer surface of the sleeve 2 and sends the sleeve 2 into the borehole. Servo motor 62 drives coil 63 to rotate. Coil 63 moves each centering limiter 4 in sequence through connecting plate 64, thereby controlling the sleeve 2 to enter and exit the blast hole.

[0050] A rangefinder 14 is installed on the side of the first moving device 1 facing the lowering pipe mechanism 6. The controller is electrically connected to the rangefinder 14. The rangefinder 14 is used to obtain the interval distance between the first moving device 1 and the lowering pipe mechanism 6 and send it to the controller. The controller is used to obtain the depth distance of the blast hole, and then control the first moving device 1 and the lowering pipe mechanism 6 respectively according to the depth distance and the interval distance, so that the end of the sleeve 2 away from the blower 11 is set close to the bottom side of the blast hole.

[0051] Specifically, the rangefinder 14 is an infrared rangefinder 14.

[0052] The connecting sleeve 5 includes a fixed frame 51, a track 52, two sliders 53, two fixed frames 54, and several tension springs 55. The fixed frame 51 is located on the top side of the first locator 1, and the fan 11, heater 12, and water pump 13 are all located on the same side of the fixed frame 51. The track 52 is located on the side of the fixed frame 51 away from the first locator 1, and extends along the fan 11 in a direction away from the fan 11. The two sliders 53 are slidably connected to the track 52, and one fixed frame 54 is located within it. A slider 53 and a fixed frame 54 are disposed on the other slider 53; the sleeve 2 is connected to the fixed frame 54 away from the fan 11, and the main pipe 31, water pipe 22 and each connecting pipe 32 pass through the two fixed frames 54 in sequence; each tension spring 55 is located between the two fixed frames 54, one end of each tension spring 55 is connected to one of the fixed frames 54, and the other end of each tension spring 55 is connected to the other fixed frame 54, and each tension spring 55 is arranged around the main pipe 31, water pipe 22 and each connecting pipe 32. The arrangement of each tension spring 55 can leave a margin for the lifting process of the sleeve 2, avoiding excessive pulling of the rope, so that the sleeve 2 and the connecting sleeve 5 are separated during the lifting process, resulting in damage to the sleeve 2.

[0053] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A borehole cleaning apparatus, characterized in that, The drilling hole cleaning device comprises a controller, a fan, a sleeve and a pipe group, the pipe group is arranged in the sleeve, a plurality of air outlets are formed on the outer wall of the sleeve, the air outlets are arranged along the length direction of the sleeve, one end of the pipe group is connected with the air outlet of the fan, the other end of the pipe group is connected with the air outlets and the end of the sleeve away from the fan respectively, the controller is electrically connected with the fan, and the controller is used for controlling the fan when the end of the sleeve away from the fan is inserted into a blast hole, so that the air is discharged from the end of the sleeve away from the fan firstly, and then the air is discharged from the air outlets along the end of the sleeve away from the fan to the fan. The drilling hole cleaning device further comprises a heater, a water pump and a water pipe, the heater is used for heating the air discharged by the fan, the water pump is connected with one end of the water pipe, the water pipe is arranged in the sleeve, the other end of the water pipe passes through the end of the sleeve away from the fan, the controller is electrically connected with the water pump, and the controller is used for controlling the water pump when the end of the sleeve away from the fan is inserted into the blast hole, so that the water in the blast hole is pumped out of the blast hole through the water pipe. The pipe group comprises a main pipe and a plurality of connecting pipes, the main pipe and the connecting pipes are arranged in the sleeve, one end of the main pipe and one end of the connecting pipes are connected with the air outlet of the fan, the end of the main pipe away from the fan is connected with the end of the sleeve away from the fan, and the ends of the connecting pipes away from the fan are connected with the air outlets in sequence. The drilling hole cleaning device further comprises a connecting sleeve, a first mover and a pipe lowering mechanism, the fan, the heater and the water pump are arranged in the first mover, the end of the sleeve away from the sleeve and the main pipe is connected with the first mover through the connecting sleeve, the pipe lowering mechanism is connected with the sleeve, the pipe lowering mechanism is used for sending the sleeve into the blast hole, and the controller is electrically connected with the first mover and the pipe lowering mechanism respectively, and the controller is used for controlling the first mover and the pipe lowering mechanism respectively, so that the first mover moves to the pipe lowering mechanism when the pipe lowering mechanism sends the sleeve into the blast hole.

2. A borehole cleaning apparatus according to claim 1, characterised in that, The outer wall of the sleeve is sleeved with a plurality of centering limiters, the centering limiters are arranged along the length direction of the sleeve in sequence, and the centering limiters are used for keeping the sleeve stable when the air outlets of the end of the sleeve away from the fan discharge air.

3. A borehole cleaning apparatus according to claim 2, wherein, The number of the air outlets is the same as the number of the connecting pipes, and the length of the sleeve is proportional to the number of the air outlets; the length of the sleeve is proportional to the number of the centering limiters.

4. A borehole cleaning apparatus as defined in claim 1, wherein, The lower pipe mechanism comprises a second mover, a servo motor, a wire reel and a plurality of connecting plates, the servo motor and the wire reel are arranged on the second mover, the servo motor is connected with the wire reel and is used to drive the wire reel to rotate, each connecting plate is arranged on a rotating surface of the wire reel, and each connecting plate is arranged in sequence and at intervals along the rotating direction, the controller is electrically connected with the second mover and the servo motor, the controller is used to control the second mover to drive the sleeve pipe to move to a preset position around the blast hole, and the controller is also used to control the servo motor to drive the wire reel to move away from the first mover when the sleeve pipe is driven by the second mover to move to the preset position around the blast hole, so that each connecting plate pushes the outer wall surface of the sleeve pipe in sequence and the sleeve pipe is sent into the blast hole.

5. A borehole cleaning apparatus as defined in claim 1, wherein, The first mover is provided with a distance measuring device on a side facing the lower pipe mechanism, the distance measuring device is electrically connected with the controller, the distance measuring device is used to obtain the interval distance between the first mover and the lower pipe mechanism and send the interval distance to the controller, the controller is used to obtain the depth distance of the blast hole, and then the first mover and the lower pipe mechanism are controlled according to the depth distance and the interval distance respectively, so that the sleeve pipe is arranged close to the bottom side of the blast hole away from the fan end.

6. A borehole cleaning apparatus as defined in claim 1, wherein, The connecting sleeve comprises a fixed frame, a track, two sliding blocks, two fixed frames and a plurality of tension springs, the fixed frame is arranged on the top side of the first mover, and the fan, the heater and the water pump are located on the same side of the fixed frame, the track is arranged on a side of the fixed frame away from the first mover, the track extends away from the fan along the fan, the two sliding blocks are respectively connected with the track in a sliding mode, one of the fixed frames is arranged on one of the sliding blocks, and the other fixed frame is arranged on the other sliding block, the sleeve pipe is connected with the fixed frame away from the fan, the main pipe, the water pipe and the connecting pipes are sequentially arranged through the two fixed frames, and the tension springs are arranged between the two fixed frames, one end of each tension spring is connected with one of the fixed frames, the other end of each tension spring is connected with the other fixed frame, and each tension spring surrounds the main pipe, the water pipe and the connecting pipes.

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