Waterproof grouting device and grouting method for coal mine shaft
By designing a coal mine shaft waterproof grouting device with a single grouting pump, the mixing power is obtained by using power conversion, and the problems of increasing equipment self-weight and cost increase in the existing technology are solved, and an efficient and economical grouting process is achieved.
Patent Information
- Application Number
- CN202510474191.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2025-06-13
AI Technical Summary
The existing grouting devices must be equipped with a mixing equipment and a grouting pump during underground operation, which leads to increased costs and increased equipment weight and increases the difficulty of lifting.
A coal mine wellbore waterproof grouting device is designed, and the grouting power of the grouting material is mixed through a single grouting pump, and the power conversion during the slurry transport process is used to obtain the stirring power of the slurry.
It reduces the use of motors, reduces costs, simplifies downhole operations, improves stirring and mixing efficiency, avoids slurry deposition, and ensures mixing uniformity.
Smart Images
Figure CN120139833A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of water control in coal mine shafts, and specifically to a waterproof grouting device and grouting method for coal mine shafts. Background Technique
[0002] Grouting for water control is a key means for water control in coal mine shafts. During the construction or operation stage of coal mine shafts, by injecting slurry into the strata or rock mass, a waterproof curtain is formed after solidification, thereby blocking the water inrush channel and effectively reducing the risk of shaft water inrush. In actual operation, the grouting technology will flexibly select appropriate grouting materials and processes according to different geological conditions and water inrush situations. For rock formations with developed fissures, cement grouting is usually adopted; for fine pores or water inrush under dynamic water conditions, chemical grouting is more applicable. With the grouting water control technology, the potential safety hazards brought by shaft water inrush in coal mines can be greatly reduced, economic losses can be minimized, and the safe production of coal mines can be ensured.
[0003] However, when the existing grouting devices are used for underground operations, a mixing device and a grouting pump need to be equipped simultaneously to complete the mixing of grouting raw materials and the grouting work. On the one hand, this increases the overall cost, and at the same time, it also significantly increases the self-weight of the equipment itself, increasing the difficulty of hoisting it underground. Summary of the Invention
[0004] Aiming at the deficiencies of the existing technology, the present invention provides a waterproof grouting device for coal mine shafts, which can realize the grouting of the water seepage part of the shaft and the mixing of grouting raw materials through a single grouting pump.
[0005] To achieve the above object, the present invention provides the following technical solution: A waterproof grouting device for coal mine shafts, including a raw material mixing barrel, an installation frame is installed at the top of the raw material mixing barrel, an installation frame is arranged at the upper end of one side of the outer wall of the raw material mixing barrel, a stirring component is installed in the middle above the installation frame, a grouting pump is installed on one side above the installation frame, the pumping end of the grouting pump is connected with a slurry extraction pipe, the discharging end of the grouting pump is connected with a power conversion component, a transmission component is jointly installed above the stirring component and the power conversion component, one end of the power conversion component is connected with a slurry flow conversion component, one end of the slurry flow conversion component is connected with a grouting hose, and one end of the grouting hose is connected with a slurry perfusion component; The power conversion component includes a first slurry conveying pipe connected to the discharging end of the grouting pump, one end of the first slurry conveying pipe communicates with a power conversion box, a power conversion impeller is rotatably installed inside the power conversion box, and a second slurry conveying pipe communicates with one side of the outer wall of the power conversion box, and the stirring power of the slurry can be obtained by using the power conversion during the slurry conveying process; The slurry flow conversion component includes a slurry flow conversion box connected to one end of the second slurry delivery pipe. An adjustment runner is rotatably installed inside the slurry flow conversion box. A flow injection area is provided on the outer wall of the adjustment runner corresponding to the second slurry delivery pipe, and a return hole is provided on the outer wall of the adjustment runner corresponding to the stirring return pipe.
[0006] Preferably, the stirring component includes a mounting plate installed at the top of the mounting frame. A rotating rod is rotatably installed in the middle of the mounting plate. A plurality of rotating disks are installed below the outer wall of the rotating rod, and stirring blades are provided at the outer wall of the rotating disks.
[0007] Preferably, the lower end of the slurry extraction pipe extends to the inner bottom end of the raw material mixing barrel.
[0008] Preferably, the transmission component includes a second belt pulley rotatably installed at the top of the power conversion box. The top of the stirring component is installed with a first belt pulley. A transmission belt is jointly sleeved on the outer walls of the first belt pulley and the second belt pulley. The rotation axis end of the second belt pulley is fixedly connected to the rotation axis end of the power conversion impeller.
[0009] Preferably, the bottom of the outer wall of the adjustment runner is communicated with a stirring return pipe. A third slurry delivery pipe is horizontally communicated on one side of the outer wall of the slurry flow conversion box and close to the stirring return pipe. And during the stirring process of the slurry, it continuously flows back into the raw material mixing barrel from the stirring return pipe.
[0010] Preferably, the return hole communicates with the flow injection area. The interval angle between the third slurry delivery pipe and the stirring return pipe is 30 degrees. The interval angle between the second slurry delivery pipe and the stirring return pipe is 90 degrees. The flow injection area is fan-shaped and the angle is greater than 30 degrees. The angle interval between the flow injection area and the return hole is greater than 30 degrees. An adjustment knob is installed on one side of the slurry flow conversion box. The adjustment knob is fixedly connected to the rotation axis end of the adjustment runner.
[0011] Preferably, the slurry perfusion component includes a connector connected to one end of the grouting hose. One end of the connector is connected with a swivel joint. The swivel joint is installed with a grouting gun handle. One end of the grouting gun handle is installed with a grouting gun head. A grouting switch is installed at the outer wall of the grouting gun head.
[0012] The grouting method of the waterproof grouting device for coal mine shafts preferably includes the following steps: Step 1: First, add the raw materials required for grouting into the raw material mixing barrel from the raw material filling hopper; Step 2: By rotating the adjustment knob, drive the adjustment runner to rotate, so that the return hole rotates to the position corresponding to the stirring return pipe. At the same time, the second slurry delivery pipe corresponds to the lower area of the injection area, and the grouting pump is powered on through the control switch of the grouting pump. The grouting raw materials in the raw material mixing barrel are extracted by the slurry extraction pipe, transported through the first slurry delivery pipe to the power conversion box, and further transported through the second slurry delivery pipe to the slurry flow conversion box. After the slurry enters the power conversion box from the first slurry delivery pipe, it will also push the power conversion impeller to rotate; Step 3: Due to the rotation of the power conversion impeller, it will drive the first pulley to rotate. Through the cooperation of the transmission belt, drive the second pulley to rotate accordingly, and further drive the rotating rod, turntable and stirring blades to rotate, realizing the stirring and mixing of the slurry in the raw material mixing barrel; Step 4: After the slurry enters the injection area through the second slurry delivery pipe, it flows back to the raw material mixing barrel from the return hole and the stirring return pipe. Through the way of backflow and stirring, the stirring and mixing efficiency is further improved until the stirring is completed; Step 5: After the stirring is completed, rotate the return hole to the position corresponding to the third slurry delivery pipe by rotating the adjustment knob. At this time, the second slurry delivery pipe corresponds to the upper part of the injection area, and the lower area of the injection area is not communicated with the stirring return pipe. The slurry can be injected into the grouting water plugging hole opened on the inner wall of the coal mine shaft through the grouting hose and the slurry perfusion component, realizing the grouting waterproofing of the coal mine shaft.
[0013] Compared with the prior art, the present invention provides a coal mine shaft waterproof grouting device and a grouting method, which have the following beneficial effects: Through the setting of the slurry flow conversion component, the power conversion component and the transmission component, the stirring power of the slurry can be obtained by using the power conversion during the slurry transportation process. By adjusting the output direction of the slurry, the conversion and application of the grouting power are realized, reducing the use of motors, lowering the cost and facilitating underground operations. Through the way of backflow and stirring, the stirring and mixing efficiency is further improved. During the grouting process, the stirring component can still continuously stir the slurry in the raw material mixing barrel to avoid the deposition of the bottom slurry and the decline of the mixing uniformity of the slurry. Description of the Drawings
[0014] Figure 1 is the structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the raw material mixing barrel of the present invention; Figure 3 is the structural schematic diagram of the stirring component in the present invention; Figure 4 is the cross-sectional view of the power conversion box in the present invention; Figure 5 is the cross-sectional structural schematic diagram of the slurry flow conversion box in the present invention; Figure 6 Schematic structural diagram of the adjusting runner in the present invention; Figure 7 Schematic disassembled structural diagram of the slurry perfusion component in the present invention.
[0015] In the figure: 1, raw material mixing barrel; 11, raw material filling hopper; 12, mounting rack; 2, stirring component; 21, mounting disc; 22, rotating rod; 23, rotating disc; 24, stirring blades; 3, power conversion component; 31, power conversion box; 32, first slurry delivery pipe; 33, second slurry delivery pipe; 34, power conversion impeller; 4, grouting pump; 41, slurry extraction pipe; 5, transmission component; 51, first pulley; 52, second pulley; 53, transmission belt; 6, slurry flow conversion box; 61, adjusting knob; 62, third slurry delivery pipe; 63, stirring return pipe; 64, adjusting runner; 65, injection area; 66, return hole; 7, grouting hose; 8, slurry perfusion component; 81, connector; 82, adapter; 83, grouting gun handle; 84, grouting gun head; 85, grouting switch. Detailed implementation manners
[0016] In the present invention, unless otherwise stated, the directions such as "upper, lower" are generally in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left, right" are generally left and right as shown in the drawings; "inside, outside" refer to inside and outside the contour of each component itself, but the above orientation terms are not used to limit the present invention.
[0017] Please refer to Figure 1-7 , the present invention provides a technical solution for a waterproof grouting device for coal mine shafts: Embodiment 1, a waterproof grouting device for coal mine shafts, including a raw material mixing barrel 1, a mounting rack 12 is installed at the top of the raw material mixing barrel 1, a mounting rack 12 is arranged on the upper side of the outer wall of the raw material mixing barrel 1, a stirring component 2 is installed in the middle above the mounting rack 12, a grouting pump 4 is installed on one side above the mounting rack 12, the material extraction end of the grouting pump 4 is connected with a slurry extraction pipe 41, the material discharge end of the grouting pump 4 is connected with a power conversion component 3, a transmission component 5 is jointly installed above the stirring component 2 and the power conversion component 3, one end of the power conversion component 3 is connected with a slurry flow conversion component, one end of the slurry flow conversion component is connected with a grouting hose 7, and one end of the grouting hose 7 is connected with a slurry perfusion component 8; The power conversion component 3 includes a first slurry conveying pipe 32 connected to the discharge end of the grouting pump 4. One end of the first slurry conveying pipe 32 communicates with a power conversion box 31. A power conversion impeller 34 is rotatably installed inside the power conversion box 31. One side of the outer wall of the power conversion box 31 communicates with a second slurry conveying pipe 33. The stirring power of the slurry can be obtained by using the power conversion during the slurry conveying process; The slurry flow conversion component includes a slurry flow conversion box 6 communicated with one end of the second slurry conveying pipe 33. An adjusting runner 64 is rotatably installed inside the slurry flow conversion box 6. A slurry injection area 65 is formed on the outer wall of the adjusting runner 64 corresponding to the second slurry conveying pipe 33. A return hole 66 is formed on the outer wall of the adjusting runner 64 corresponding to the stirring return pipe 63; The stirring component 2 includes a mounting plate 21 installed at the top of the mounting frame 12. A rotating rod 22 is rotatably installed in the middle of the mounting plate 21. A plurality of rotating discs 23 are installed below the outer wall of the rotating rod 22. Stirring blades 24 are arranged on the outer wall of the rotating discs 23. The lower end of the slurry extraction pipe 41 extends to the inner bottom end of the raw material mixing barrel 1.
[0018] In the second embodiment, the transmission component 5 includes a second belt pulley 52 rotatably installed at the top of the power conversion box 31. A first belt pulley 51 is installed at the top of the stirring component 2. A transmission belt 53 is jointly sleeved on the outer walls of the first belt pulley 51 and the second belt pulley 52. The rotation axis end of the second belt pulley 52 is fixedly connected to the rotation axis end of the power conversion impeller 34. The transmission component 5 is used to transmit the slurry conveying power, so that the slurry can be stirred without adding a stirring motor. A stirring return pipe 63 is communicated with the bottom of the outer wall of the adjusting runner 64. A third slurry conveying pipe 62 is horizontally communicated with one side of the outer wall of the slurry flow conversion box 6 and near the stirring return pipe 63. By adjusting the output direction of the slurry, the conversion and application of the grouting power are realized, the use of the motor is reduced, the cost is lowered, and the underground operation is facilitated. During the stirring process of the slurry, the slurry continuously flows back into the raw material mixing barrel 1 through the stirring return pipe 63, which further improves the mixing uniformity and mixing efficiency of the raw materials. And during the subsequent grouting process, the slurry is continuously stirred to prevent the bottom slurry from depositing and causing the mixing uniformity of the slurry to decrease. The return hole 66 communicates with the slurry injection area 65. The interval angle between the third slurry conveying pipe 62 and the stirring return pipe 63 is 30 degrees. The interval angle between the second slurry conveying pipe 33 and the stirring return pipe 63 is 90 degrees. The slurry injection area 65 is fan-shaped and the angle is greater than 30 degrees. The angle interval between the slurry injection area 65 and the return hole 66 is greater than 30 degrees. An adjusting knob 61 is installed on one side of the slurry flow conversion box 6. The adjusting knob 61 is fixedly connected to the rotation axis end of the adjusting runner 64.
[0019] Embodiment 3. The slurry perfusion component 8 includes a connector 81 connected to one end of the grouting hose 7. One end of the connector 81 is connected to an adapter 82. The adapter 82 is equipped with a grouting gun handle 83. One end of the grouting gun handle 83 is equipped with a grouting gun head 84. A grouting switch 85 is installed on the outer wall of the grouting gun head 84.
[0020] When in specific use, as a grouting method of a coal mine shaft waterproof grouting device, the present invention includes the following steps: Step 1: First, add the raw materials required for grouting into the raw material mixing barrel 1 from the raw material filling hopper 11. Step 2: By rotating the adjustment knob 61, drive the adjustment runner 64 to rotate, so that the return hole 66 rotates to the position corresponding to the stirring return pipe 63. At the same time, the second slurry delivery pipe 33 corresponds to the lower area of the injection flow area 65, and the grouting pump 4 is powered on through the control switch of the grouting pump 4. The grouting raw materials in the raw material mixing barrel 1 are extracted by the slurry extraction pipe 41, transported through the first slurry delivery pipe 32 to the power conversion box 31, and further transported through the second slurry delivery pipe 33 to the slurry flow conversion box 6. After the slurry enters the power conversion box 31 from the first slurry delivery pipe 32, it will also push the power conversion impeller 34 to rotate. Step 3: Due to the rotation of the power conversion impeller 34, it will drive the first belt pulley 51 to rotate. Through the cooperation of the transmission belt 53, drive the second belt pulley 52 to rotate accordingly, thereby further driving the rotating rod 22, the turntable 23, and the stirring blades 24 to rotate, realizing the stirring and mixing of the slurry in the raw material mixing barrel 1. Step 4: After the slurry enters the injection flow area 65 through the second slurry delivery pipe 33, it flows back to the raw material mixing barrel 1 from the return hole 66 and the stirring return pipe 63. Through the way of reflux and stirring, the stirring and mixing efficiency is further improved until the stirring is completed. Step 5: After the stirring is completed, rotate the adjustment knob 61 to rotate the return hole 66 to the position corresponding to the third slurry delivery pipe 62. At this time, the second slurry delivery pipe 33 corresponds to the upper part of the injection flow area 65, and the lower area of the injection flow area 65 is not communicated with the stirring return pipe 63. The slurry can be injected into the grouting water plugging holes opened on the inner wall of the coal mine shaft through the grouting hose 7 and the slurry perfusion component 8, realizing the grouting waterproofing of the coal mine shaft. During the grouting process, the stirring component 2 can still continuously stir the slurry in the raw material mixing barrel 1 to avoid the deposition of the bottom slurry and the decline of the mixing uniformity of the slurry.
[0021] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements, or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present invention.
Claims
1. A waterproof grouting device for a coal mine shaft, comprising a raw material mixing barrel, a mounting frame is installed on the top of the raw material mixing barrel, and a mounting frame is provided on the upper end of one side of the outer wall of the raw material mixing barrel, characterized in that: A stirring component is installed in the middle of the upper part of the mounting frame, a grouting pump is installed on one side of the upper part of the mounting frame, the extraction end of the grouting pump is connected to a slurry extraction pipe, the discharge end of the grouting pump is connected to a power conversion component, a transmission component is installed above the stirring component and the power conversion component, one end of the power conversion component is connected to a slurry circulation conversion component, one end of the slurry circulation conversion component is connected to a grouting hose, and one end of the grouting hose is connected to a slurry pouring component; The power conversion component includes a first slurry delivery pipe connected to the discharge end of the grouting pump, one end of the first slurry delivery pipe is connected to a power conversion box, a power conversion impeller is rotatably installed inside the power conversion box, and one side of the outer wall of the power conversion box is connected to a second slurry delivery pipe, which can utilize the power conversion during the slurry delivery process to obtain the stirring power of the slurry; The slurry circulation conversion component includes a slurry circulation conversion box connected to one end of the second slurry delivery pipe. An adjusting wheel is rotatably installed inside the slurry circulation conversion box. An injection area is opened on the outer wall of the adjusting wheel corresponding to the second slurry delivery pipe. A reflux hole is opened on the outer wall of the adjusting wheel corresponding to the stirring reflux pipe.
2. A coal mine shaft waterproof grouting device according to claim 1, characterized in that: The stirring component comprises a mounting plate mounted on the top of the mounting frame, a rotating rod is rotatably mounted in the middle of the mounting plate, a plurality of rotating disks are mounted below the outer wall of the rotating rod, and stirring blades are arranged on the outer wall of the rotating disk.
3. A coal mine shaft waterproof grouting device according to claim 1, characterized in that: The lower end of the slurry extraction pipe extends to the inner bottom end of the raw material mixing barrel.
4. A coal mine shaft waterproof grouting device according to claim 1, characterized in that: The transmission component includes a second pulley rotatably installed on the top of the power conversion box, a first pulley is installed on the top of the stirring component, the outer walls of the first pulley and the second pulley are jointly covered with a transmission belt, and the rotating shaft end of the second pulley is fixedly connected to the rotating shaft end of the power conversion impeller.
5. A coal mine shaft waterproof grouting device according to claim 1, characterized in that: The bottom of the outer wall of the regulating wheel is connected with a stirring reflux pipe, and one side of the outer wall of the slurry flow conversion box is horizontally connected with a third slurry delivery pipe near the stirring reflux pipe.
6. A coal mine shaft waterproof grouting device according to claim 5, characterized in that: The reflux hole is connected with the injection area, the interval angle between the third slurry pipe and the stirring reflux pipe is thirty degrees, the interval angle between the second slurry pipe and the stirring reflux pipe is ninety degrees, the injection area is fan-shaped and the angle is greater than thirty degrees, the angular interval between the injection area and the reflux hole is greater than thirty degrees, and an adjusting knob is installed on one side of the slurry circulation conversion box, and the adjusting knob is fixedly connected to the rotating shaft end of the adjusting wheel.
7. A coal mine shaft waterproof grouting device according to claim 1, characterized in that: The slurry pouring component comprises a connector connected to one end of a grouting hose, one end of the connector is connected to an adapter, a grouting gun handle is installed on the adapter, a grouting gun head is installed on one end of the grouting gun handle, and a grouting switch is installed on the outer wall of the grouting gun head.
8. A grouting method for a coal mine shaft waterproof grouting device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: First, add the raw materials required for grouting into the raw material mixing barrel from the raw material filling hopper; Step 2: By turning the adjustment knob, the adjustment wheel is driven to rotate, so that the reflux hole is rotated to the position corresponding to the stirring reflux pipe. At the same time, the second slurry delivery pipe corresponds to the lower area of the injection area, and the grouting pump is powered on through the control switch of the grouting pump. The grouting raw materials in the raw material mixing barrel are extracted by the slurry extraction pipe, transported to the power conversion box through the first slurry delivery pipe, and further transported to the slurry circulation conversion box through the second slurry delivery pipe. After the slurry enters the power conversion box from the first slurry delivery pipe, it will also drive the power conversion impeller to rotate; Step 3: Due to the rotation of the power conversion impeller, the first pulley will be driven to rotate, and through the cooperation of the transmission belt, the second pulley will also be driven to rotate, thereby further driving the rotating rod, the rotating disk and the stirring blade to rotate, so as to achieve the stirring and mixing of the slurry in the raw material mixing barrel; Step 4: After the slurry enters the injection area through the second slurry delivery pipe, it flows back to the raw material mixing barrel through the reflux hole and the stirring reflux pipe. The stirring and mixing efficiency is further improved by the reflux and stirring until the stirring is completed; Step 5: After the stirring is completed, rotate the adjusting knob to rotate the reflux hole to the corresponding position of the third slurry delivery pipe. At this time, the second slurry delivery pipe corresponds to the upper part of the injection area, and the area below the injection area will not be connected to the stirring reflux pipe. The slurry can be injected into the grouting water plugging holes opened on the inner wall of the coal mine shaft through the grouting hose and the slurry pouring components to achieve grouting waterproofing of the coal mine shaft. During the grouting process, the stirring component can still continuously stir the slurry in the raw material mixing barrel to avoid the deposition of slurry at the bottom, which causes the mixing uniformity of the slurry to decrease.