Drilling slurry wall protecting device for fracture zone

Abstract

The utility model relates to the field of drilling, and discloses a broken zone drilling slurry wall protecting device which comprises a rotating rod, the inner wall of the rotating rod is slidably connected with a moving plate, the outer wall of the moving plate is fixedly connected with a sleeve, the inner wall of the sleeve is in threaded connection with a threaded pipe, the right end of the threaded pipe is fixedly connected with a clamping pipe, and the right end of the clamping pipe is fixedly connected with a rotating shaft. A connecting pipe is slidably connected to the inner wall of the moving plate, a trowelling plate is fixedly connected to the left end of the connecting pipe, a circular groove is formed in the outer wall of the rotating rod, a drilling mechanism is arranged at the bottom end of the rotating rod, and a mud inlet pipe is fixedly connected to the outer wall of the trowelling plate. According to the utility model, the clamping pipe drives the sleeve and the movable plate to move downwards, and the troweling plate is opened outwards to smooth slurry for blocking the hole wall, so that the situation that the slurry flows out of a gap to cause crushing and collapse is avoided, and the situation that a drill rod, a drill bit and an impactor are clamped due to the crushing and collapse of the hole wall in the drilling process can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of drilling, in particular to a mud wall protection device for drilling holes in a broken zone. Background Art

[0002] In the process of open-pit mining, weathered and broken rock layers often appear inside the rock mass. This type of rock layer will bring great inconvenience to the drilling operation when the drilling and blasting method is used for construction. The drill rod, drill bit and impactor will be stuck due to the collapse of the hole wall in the middle of the drilling operation. It takes a lot of time to deal with such problems, and even the accessories have to be discarded, which increases the drilling cost and the difficulty of hole maintenance. The borehole may collapse by itself before charging and blasting, resulting in fewer holes or insufficient hole depth. During the charging process, bulk explosives will slip away from the cracks in the hole wall of the broken zone, resulting in insufficient charging and affecting the blasting effect. It is necessary to develop a drilling auxiliary device that can increase the hole formation rate in the broken zone drilling stage, facilitate later drilling maintenance, and prevent explosives from slipping away. The mud wall protection method can help solve the problem of drilling construction in the broken zone. For this reason, a mud wall protection device for drilling in the broken zone is proposed to solve the above problems. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a mud wall protection device for drilling in a broken zone, aiming to improve the problem in the prior art of hole wall crushing and collapse, which causes the drill rod, drill bit and impactor to be stuck.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a broken zone drilling mud wall protection device, including a rotating rod, the inner wall of the rotating rod is slidably connected to a movable plate, the outer wall of the movable plate is fixedly connected to a casing, the inner wall of the casing is threadedly connected to a threaded pipe, the right end of the threaded pipe is fixedly connected to a clamping pipe, the inner wall of the movable plate is slidably connected to a connecting pipe, the left end of the connecting pipe is fixedly connected to a trowel plate, the outer wall of the rotating rod is provided with a circular groove, and the bottom end of the rotating rod is provided with a drilling mechanism.

[0005] As a further description of the above technical solution:

[0006] The outer wall of the trowel plate is fixedly connected with a mud inlet pipe, the top of the mud inlet pipe is fixedly connected with a storage box via a hose, the side wall of the storage box is provided with a connecting port, the top of the storage box is provided with a controller, the right end of the storage box is provided with a water tank, the top of the water tank is fixedly connected with a mixing barrel via a delivery pipe, and the side wall of the mixing barrel is provided with a pump pipe.

[0007] As a further description of the above technical solution:

[0008] The storage box is fixedly connected to the outer wall of the upper end of the rotating rod through a bracket.

[0009] As a further description of the above technical solution:

[0010] The clamping tube contacts the inner wall of the circular groove.

[0011] As a further description of the above technical solution:

[0012] The trowel plate is slidably connected to the inner wall of the rotating rod.

[0013] As a further description of the above technical solution:

[0014] The sleeve is slidably connected to the inner wall of the rotating rod.

[0015] As a further description of the above technical solution:

[0016] The drilling mechanism comprises a drill bit, and the drill bit is detachably mounted on the bottom end of the rotating rod.

[0017] The utility model has the following beneficial effects:

[0018] In the utility model, the clamping tube is moved downward with the casing and the movable plate, and the smearing plate is opened outward to smooth the mud blocking the hole wall, so as to avoid the mud flowing out from the gap to cause breakage and collapse, and to avoid the drill rod, drill bit and impactor being stuck due to the breakage and collapse of the hole wall during the drilling process.

[0019] In the utility model, mud is stored in a storage box, and the mud in the storage box can be transported to the trowel plate through a hose and a mud inlet pipe at any time. The mud can be used to cool drill bits, drill rods and other tools to extend their service life. At the same time, the mud can carry drill cuttings and be discharged out of the hole to avoid dust pollution caused by blowing the hole.

[0020] 3. The utility model is helpful to improve the porosity of the rock fracture zone, facilitates the maintenance of the drilled holes before blasting, ensures the number and depth of holes in the blasting area, avoids economic losses caused by re-drilling and re-drilling, and prevents bulk explosives from slipping away from the cracks in the rock wall during the charging process, thereby improving the utilization rate of explosives and saving the cost of explosives. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall three-dimensional schematic diagram of a rotating rod of a mud wall protection device for drilling holes in a broken zone proposed by the utility model;

[0022] Figure 2 This is a schematic cross-sectional view of the entire rotating rod of a mud wall protection device for drilling in a broken zone proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the disassembled sectional view of a screed plate and a rotating rod of a mud wall protection device for drilling a broken zone proposed by the utility model;

[0024] Figure 4 The utility model discloses an exploded schematic diagram of a casing, a threaded pipe and a clamping pipe of a mud wall protection device for drilling holes in a broken zone.

[0025] Legend:

[0026] 1. Rotating rod; 2. Moving plate; 3. Casing; 4. Threaded pipe; 5. Clamp pipe; 6. Connecting pipe; 7. Screed plate; 8. Drill bit; 9. Mud inlet pipe; 10. Hose; 11. Storage box; 12. Connecting port; 13. Controller; 14. Water tank; 15. Delivery pipe; 16. Mixing barrel; 17. Pump pipe; 18. Round groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-Figure 3 The utility model provides an embodiment: a mud wall protection device for drilling in a broken zone, comprising a rotating rod 1, the top of which is connected to the output end of an existing motor, so that the output end of the motor can drive the rotating rod 1 and the drill bit 8 to rotate and drill holes, the inner wall of the rotating rod 1 is slidably connected to a moving plate 2, and an inclined groove is provided on the moving plate 2, so that the inclined groove can squeeze the connecting pipe 6, so that the connecting pipe 6 can move with the trowel plate 7, and the outer wall of the moving plate 2 is fixedly connected to a sleeve 3, referring to Figure 4 The inner wall of the casing 3 is threadedly connected with a threaded tube 4, and the right end of the threaded tube 4 is fixedly connected with a clamping tube 5. The inner wall of the movable plate 2 is slidably connected with a connecting tube 6. The connecting tube 6 mainly connects the entire trowel plate 7. The connecting tube 6 will move synchronously with the trowel plate 7. The left end of the connecting tube 6 is fixedly connected with the trowel plate 7. The interior of the trowel plate 7 is a cavity, and a groove is provided on the surface of the trowel plate 7, which can allow mud to overflow from the groove and seal the cracks on the inner wall of the borehole. A circular groove 18 is provided on the outer wall of the rotating rod 1, and a drilling mechanism is provided at the bottom end of the rotating rod 1.

[0029] Reference Figure 1The outer wall of the trowel plate 7 is fixedly connected with a mud inlet pipe 9. The mud inlet pipe 9 is the same as the trowel plate 7, and can allow mud to enter the cavity of the trowel plate 7 from the mud inlet pipe 9. The top of the mud inlet pipe 9 is fixedly connected with a storage box 11 through a hose 10. One end of the hose 10 is connected to the mud inlet pipe 9, and the other end of the hose 10 is connected to the bottom end of the storage box 11, and the hose 10 can produce elongation deformation. The side wall of the storage box 11 is provided with a connecting port 12, and the connecting port 12 can be connected to the pump pipe 17 to allow mud to enter the storage box 11. The top of the storage box 11 is provided with a controller 13. The controller 13 can open the valve at the bottom of the storage box 11 through the existing technology to let the mud The slurry is discharged from the hose 10. A water tank 14 is provided at the right end of the storage box 11. The water tank 14 is of existing technology. The water pump inside the water tank 14 can pump water into the mixing barrel 16 to mix with the soil. The top of the water tank 14 is fixedly connected to the mixing barrel 16 through a delivery pipe 15. A stirring rod is provided in the mixing barrel 16. The soil and water are stirred and mixed into slurry through the stirring rod. A pump pipe 17 is provided on the side wall of the mixing barrel 16. A delivery pump is provided in the mixing barrel 16. The delivery pump can deliver the content in the mixing barrel 16 to the connecting port 12 through the pump pipe 17 and enter the storage box 11. The storage box 11 is fixedly connected to the upper outer wall of the rotating rod 1 through a bracket.

[0030] Reference Figure 4 The clamping tube 5 contacts the inner wall of the circular groove 18, and a notch for the sleeve 3 to slide is provided on the rotating rod 1. The circular groove 18 is divided into an upper notch and a lower notch. The upper notch of the circular groove 18 contacts the clamping tube 5 to limit the position when the trowel plate 7 is not punched, so that it can be retracted to Figure 1 As shown, the lower end notch of the circular groove 18 contacts the clamping tube 5 to limit the entry of the trowel plate 7 into the hole wall, thereby preventing the trowel plate 7 from being squeezed by the protrusion of the inner wall of the hole and moving. The trowel plate 7 is slidably connected to the inner wall of the rotating rod 1, as shown in FIG. Figure 2 As shown, a round tube is provided at the lower end of the trowel plate 7, which enables the round tube to slide on the inner wall of the rotating rod 1, thereby guiding the entire trowel plate 7. The sleeve 3 is slidably connected to the inner wall of the rotating rod 1, and the drilling mechanism includes a drill bit 8, which is detachably mounted at the bottom end of the rotating rod 1, and the drill bit 8 is used to perform drilling processing on the drilling zone of the open-pit mine.

[0031] Working principle: First, the soil needs to be introduced into the mixing barrel 16 before drilling, and the water in the water tank 14 is transported to the mixing barrel 16 through the delivery pipe 15 by the water pump in the water tank 14, so that the water and soil are mixed into mud for use. After the mixing is completed, the pump pipe 17 can be spliced ​​and transported with the connecting port 12, and the mud can be stored in the storage box 11.

[0032] When drilling, it is only necessary to first contact the drill bit 8 with the ground, and use the existing motor to drive the rotating rod 1 and the drill bit 8 to rotate, so that the drill bit 8 drills the ground. When the hole can allow the lower end of the trowel plate 7 to enter, the clamping tube 5 is rotated clockwise to drive the threaded tube 4 to rotate, so that the clamping tube 5 is separated from the upper end notch of the circular groove 18, and then the clamping tube 5 is moved downward to drive the sleeve 3 and the movable plate 2 downward, so that the inclined groove of the movable plate 2 squeezes the connecting tube 6, so that the connecting tube 6 and the trowel plate 7 are separated from each other, and the trowel plate 7 is separated from the connecting tube 6. The inner wall of the hole is contacted, and finally the clamping tube 5 is rotated counterclockwise to move along the left end of the casing 3 with the threaded tube 4, so that the clamping tube 5 is overlapped and plugged with the lower end notch of the circular groove 18, and then the controller 13 is started to inject the mud in the storage box 11 into the cavity of the trowel plate 7 through the hose 10 and the mud inlet pipe 9. At this time, the drilling process is continued to allow the mud in the cavity of the trowel plate 7 to overflow and block the gap of the inner wall of the hole wall. At the same time, the trowel plate 7 rotates with the rotating rod 1 to allow the trowel plate 7 to continuously smooth the gap after the mud is blocked, thereby improving its blocking effect.

[0033] After the drilling is completed, according to the second operation steps, the clamping tube 5 is separated from the circular groove 18 by rotating it, and the sleeve 3 and the movable plate 2 are reset upward by the clamping tube 5, so that the inclined groove of the movable plate 2 squeezes the connecting tube 6, and the connecting tube 6 and the trowel plate 7 are brought close to each other and reset, and finally the clamping tube 5 is rotated to make the clamping tube 5 contact and block the upper end notch of the circular groove 18.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mud wall protection device for drilling in a broken zone, comprising a rotating rod (1), characterized in that: The inner wall of the rotating rod (1) is slidably connected to a movable plate (2), the outer wall of the movable plate (2) is fixedly connected to a sleeve (3), the inner wall of the sleeve (3) is threadedly connected to a threaded tube (4), the right end of the threaded tube (4) is fixedly connected to a clamping tube (5), the inner wall of the movable plate (2) is slidably connected to a connecting tube (6), the left end of the connecting tube (6) is fixedly connected to a trowel plate (7), the outer wall of the rotating rod (1) is provided with a circular groove (18), and the bottom end of the rotating rod (1) is provided with a drilling mechanism.

2. The broken zone drilling mud wall protection device according to claim 1 is characterized in that: The outer wall of the trowel plate (7) is fixedly connected to a mud inlet pipe (9), the top end of the mud inlet pipe (9) is fixedly connected to a storage box (11) via a hose (10), a side wall of the storage box (11) is provided with a connection port (12), a top end of the storage box (11) is provided with a controller (13), a right end of the storage box (11) is provided with a water tank (14), the top end of the water tank (14) is fixedly connected to a mixing barrel (16) via a delivery pipe (15), and a side wall of the mixing barrel (16) is provided with a pump pipe (17).

3. The broken zone drilling mud wall protection device according to claim 2 is characterized in that: The storage box (11) is fixedly connected to the upper outer wall of the rotating rod (1) via a bracket.

4. The broken zone drilling mud wall protection device according to claim 1 is characterized in that: The clamping tube (5) contacts the inner wall of the circular groove (18).

5. The broken zone drilling mud wall protection device according to claim 1 is characterized in that: The trowel plate (7) is slidably connected to the inner wall of the rotating rod (1).

6. The broken zone drilling mud wall protection device according to claim 1 is characterized by: The sleeve (3) is slidably connected to the inner wall of the rotating rod (1).

7. The broken zone drilling mud wall protection device according to claim 1 is characterized by: The drilling mechanism comprises a drill bit (8), and the drill bit (8) is detachably mounted on the bottom end of the rotating rod (1).

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