A slurry mixer for mine underground grouting

Abstract

The present application relates to mine energy-saving mixing technical field, especially to a kind of slurry mixer for mine underground grouting, the present application includes mixing barrel, and for the spiral feeder of mixing barrel feeding;It also includes being arranged in spiral feeder, for the stirring assembly of material stirring in mixing barrel, stirring assembly includes rotationally arranged in mixing barrel stirring shaft, multiple stirring plates for material stirring are arranged at equal angle on stirring shaft, and multiple stirring plates can adjust its angle according to material viscosity;While driving motor heating, energy consumption is serious, the angle of stirring plate is gradually adjusted at this time, so that the resistance between stirring plate and material gradually becomes smaller, to avoid driving motor due to resistance becomes larger, leading to energy loss, while stirring plate angle is adjusted according to material viscosity, further improve the stirring uniformity of equipment, while improving the quality of mixing, reduce the loss of energy.

Description

Technical Field

[0001] This invention relates to the field of energy-saving mixing technology in mines, and in particular to a slurry mixer for underground grouting in mines. Background Technology

[0002] In underground grouting and similar industrial mixing operations in mines, the viscosity of the grout can fluctuate significantly due to differences in raw material ratios, water addition, and ambient temperature.

[0003] Traditional fixed-angle blade mixers cannot automatically adjust mixing parameters according to changes in slurry viscosity. When processing high-viscosity slurries, the frictional resistance between the mixing plate and the material increases sharply, causing the drive motor current to surge, heat up severely, energy consumption to increase significantly, and even causing the motor to overload, stall, or burn out. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by proposing a slurry mixer for underground grouting in mines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A slurry mixer for underground grouting in mines includes a mixing tank and a screw feeder for feeding materials into the mixing tank. It also includes a mixing assembly disposed inside the screw feeder for mixing materials in the mixing tank. The mixing assembly includes a mixing shaft rotatably disposed inside the mixing tank. Multiple mixing plates for mixing materials are disposed at equal angles on the mixing shaft, and the angles of the multiple mixing plates can be adjusted according to the viscosity of the materials. A flow control component for controlling material flow rate is provided between the mixing tank and the screw feeder. The flow control component includes multiple rotating plates that are rotatably arranged at the discharge port of the screw feeder at equal angles, and the gap between the multiple rotating plates is adjusted synchronously when the angle of the mixing plate is adjusted.

[0006] Preferably, the flow control assembly further includes a first toothed ring rotatably disposed at the discharge port of the screw feeder, a pull rod hinged between the first toothed ring and the rotating plate, and a driven gear meshing with the first toothed ring at the discharge port of the screw feeder, and an arc-shaped rack meshing with the other side of the driven gear.

[0007] Preferably, the stirring shaft is provided with an adjustment component for adjusting the angle of the stirring plate.

[0008] Preferably, the adjusting assembly includes an adjusting gear disposed at the end of the stirring plate, a plurality of adjusting racks are slidably disposed inside the stirring shaft, and the adjusting racks mesh with the adjusting gear. Each end of the plurality of adjusting racks is provided with a fixing ring, so that the plurality of adjusting racks form a whole. Two first springs are fixedly disposed on the fixing ring at the top of the adjusting racks, and the first springs are fixedly disposed on the top surface of the inner wall of the stirring shaft. A first pull rope is fixedly disposed on the fixing ring at the top of the adjusting racks, and the end of the first pull rope is fixedly disposed on the arc-shaped rack for pulling the arc-shaped rack to rotate in a ring.

[0009] Preferably, a control component for driving the movement of the adjusting rack is provided on the lower side of the stirring shaft.

[0010] Preferably, the control component includes two support rings disposed on the stirring shaft, one of which is fixedly disposed on the stirring shaft and the other is slidably disposed on the stirring shaft. A guide groove is provided on the stirring shaft, and the support ring is slidably disposed in the guide groove. The upper side of the sliding support ring is fixedly disposed with a fixing ring at the bottom of the adjusting rack. Both support rings are hinged with adjusting arms, and a counterweight ball is disposed between the two adjusting arms.

[0011] Preferably, the mixing tank is equipped with a feeding component, and after the angle of the mixing plate is adjusted, the material in the mixing tank is discharged by the feeding component.

[0012] Preferably, the feeding assembly includes a sealing plate slidably disposed inside the mixing tank, a second pull rope is fixedly disposed between the sealing plate and the fixing ring at the bottom of the adjusting rack, and a second spring for resetting is also disposed at the end of the sealing plate.

[0013] Preferably, the mixing tank is provided with a drive assembly for driving the mixing shaft and the screw feeder to rotate. The drive assembly includes a drive motor mounted on the mixing tank. The output end of the drive motor is connected to the output end of the screw feeder. A transmission shaft is rotatably mounted inside the mixing tank and meshes with the output end of the drive motor. A drive gear is provided at the end of the transmission shaft, and a second toothed ring that meshes with the drive gear is provided at the end of the mixing shaft.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The centrifugal force of the counterweight ball senses changes in the stirring shaft speed, and the position of the adjustment component is adjusted accordingly. This allows the adjustment component to automatically adjust the angle of the stirring plate, achieving an adaptive adjustment where the stirring plate tends to be horizontal when the stirring resistance is high and vertical when the resistance is low. This effectively reduces the energy consumption and heat generation of the drive motor under high-viscosity materials. Simultaneously, the stirring plate angle adjustment and flow control components work together to synchronously control the gap between the rotating plates, achieving an adaptive matching effect where a larger stirring plate angle (fast stirring for low viscosity) results in a faster feeding speed, and a smaller stirring plate angle (slow stirring for high viscosity) results in a slower feeding speed. This avoids excessive material accumulation in the mixing tank, which would lead to a surge in energy consumption. In this equipment, a single drive motor simultaneously drives the screw feeder, stirring shaft, and discharge assembly. During the stirring process, centrifugal force-controlled mechanical linkage achieves coordinated adjustment of the stirring plate angle, feeding speed, and discharge sealing. This allows a single power source to perform multi-parameter coordinated control, simplifying the transmission structure and reducing manufacturing costs and operating energy consumption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the front side proposed in this invention; Figure 3 This is a schematic diagram of the interior of a partial upper structure proposed in this invention; Figure 4 This is a schematic diagram of the interior of the partial lower structure proposed in this invention; Figure 5 This is a schematic cross-sectional view of the partial front structure proposed in this invention; Figure 6 This is a schematic diagram of the internal structure of the partial front side proposed in this invention; Figure 7 This is a schematic cross-sectional view of a partial upper structure proposed in this invention; Figure 8 This is a schematic diagram of the workflow of the present invention.

[0016] In the diagram: 1. Mixing tank; 2. Screw feeder; 3. Mixing assembly; 31. Mixing shaft; 32. Mixing plate; 4. Flow control assembly; 41. Rotating plate; 42. First gear ring; 43. Pull rod; 44. Driven gear; 45. Arc rack; 5. Adjusting assembly; 51. Adjusting gear; 52. Adjusting rack; 53. First spring; 54. First pull rope; 6. Control assembly; 61. Support ring; 62. Adjusting arm; 63. Counterweight ball; 7. Discharge assembly; 71. Sealing plate; 72. Second pull rope; 73. Second spring; 8. Drive assembly; 81. Drive motor; 82. Transmission shaft; 83. Drive gear; 84. Second gear ring. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0019] Reference Figures 1-8 A slurry mixer for underground grouting in mines includes a mixing tank 1 and a screw feeder 2 for feeding materials into the mixing tank 1; it also includes a mixing assembly 3 disposed in the screw feeder 2 for mixing materials in the mixing tank 1. The mixing assembly 3 includes a mixing shaft 31 rotatably disposed in the mixing tank 1, and multiple mixing plates 32 for mixing materials are disposed at equal angles on the mixing shaft 31, and the angle of the multiple mixing plates 32 can be adjusted according to the viscosity of the material. A flow control component 4 for material flow rate control is provided between the mixing tank 1 and the screw feeder 2. The flow control component 4 includes multiple rotating plates 41 that are rotatably arranged at equal angles at the discharge port of the screw feeder 2, and the gap between the multiple rotating plates 41 is adjusted synchronously when the angle of the mixing plate 32 is adjusted; Reference Figure 1 and Figure 8 The raw materials to be mixed are placed in the screw feeder 2, and the stirring shaft 31 is driven to rotate. At this time, the screw feeder 2 conveys the raw materials into the mixing tank 1. When the stirring shaft 31 rotates, multiple rotating plates 41 are gradually opened, and the raw materials gradually enter the mixing tank 1. When the stirring shaft 31 drives the stirring plates 32 to rotate, the stirring plates 32 can stir and mix the raw materials. Since the stirring plates 32 are plate-shaped, their initial state is close to a horizontal state. Therefore, when the stirring shaft 31 is driven, the resistance of the stirring plates 32 can be reduced to the greatest extent, thereby reducing the heat generation of the drive motor 81 and achieving the energy-saving effect of the drive motor 81. As the stirring shaft 31 rotates, water is added to the raw materials to mix them. The viscosity of the mixed materials creates resistance on the surface of the stirring plate 32. When the resistance of the stirring plate 32 increases, the rotation speed of the stirring shaft 31 gradually decreases. At the same time, the drive motor 81 heats up and consumes a lot of energy. The angle of the stirring plate 32 is gradually adjusted to reduce the resistance between the stirring plate 32 and the materials, thereby avoiding energy loss due to increased resistance in the drive motor 81. In addition, the angle adjustment of the stirring plate 32 according to the viscosity of the materials further improves the mixing uniformity of the equipment, improves the mixing quality, and reduces energy consumption.

[0020] Preferred, Reference Figure 7 The flow control assembly 4 also includes a first gear ring 42 rotatably disposed at the discharge port of the screw feeder 2. A pull rod 43 is hinged between the first gear ring 42 and the rotating plate 41. A driven gear 44 meshing with the first gear ring 42 is also provided at the discharge port of the screw feeder 2, and an arc-shaped rack 45 meshes with the other side of the driven gear 44. An elastic element is provided on one side of the arc-shaped rack 45, which is an arc-shaped spring. That is, when the stirring shaft 31 rotates, it will pull the arc-shaped rack 45 to rotate, so that the arc-shaped rack 45 gradually drives the driven gear 44 to rotate. When the driven gear 44 rotates, the driven gear... Wheel 44 simultaneously drives the first gear ring 42 to rotate. At this time, the pull rod 43 on the first gear ring 42 gradually pulls the rotating plate 41 to rotate, making the gap between the multiple rotating plates 41 larger, while ensuring the feeding effect in the mixing tank 1. When the rotation speed of the stirring shaft 31 slows down, the elastic element on the rear side of the arc-shaped rack 45 will gradually pull the arc-shaped rack 45 back. At this time, the first gear ring 42 rotates in the opposite direction. When the first gear ring 42 rotates in the opposite direction, the gap between the multiple rotating plates 41 gradually decreases, thereby reducing the feeding speed in the mixing tank 1 and avoiding excessive material in the mixing tank 1, which would cause the drive motor 81 to heat up and consume more energy.

[0021] Preferred, Reference Figure 5 and Figure 6 An adjustment component 5 for adjusting the angle of the stirring plate 32 is provided inside the stirring shaft 31. By adjusting the up and down movement of the parts inside the adjustment component 5, the angle of the stirring plate 32 can be effectively adjusted, so that the equipment can adjust the stirring plate 32 according to the viscosity of the material, avoiding energy consumption and improving the mixing effect of the equipment.

[0022] Preferred, Reference Figure 5 and Figure 6The adjusting assembly 5 includes an adjusting gear 51 disposed at the end of the stirring plate 32. Multiple adjusting racks 52 are slidably disposed within the stirring shaft 31, and the adjusting racks 52 mesh with the adjusting gear 51. Each end of the multiple adjusting racks 52 has a fixing ring, forming a single unit. Two first springs 53 are fixedly disposed on the fixing ring at the top of the adjusting racks 52, and the first springs 53 are fixedly disposed on the top surface of the inner wall of the stirring shaft 31. A first pull rope 54 is fixedly disposed on the top fixing ring of the adjusting racks 52, and the end of the first pull rope 54 is fixedly disposed on an arc-shaped rack 45 for pulling the arc-shaped rack 45 to rotate in a ring. Initially, the multiple adjusting racks 52 are pulled by the first springs 53. When the stirring shaft 31 rotates, the adjusting racks 52 gradually descend, and the length of the first springs 53 is stretched. When the adjusting racks 52 rotate, the adjusting racks 52 gradually descend, and the length of the first springs 53 is stretched. When the rack 52 descends, it drives the adjusting gear 51 to rotate, thereby changing the angle of the stirring plate 32. When the rotation speed of the stirring shaft 31 slows down, the elastic force of the first spring 53 pulls the adjusting rack 52 upward. At this time, the adjusting rack 52 drives the adjusting gear 51 to rotate, causing the angle of the stirring plate 32 to change again. That is, the angle of the stirring plate 32 is adjusted to be closer to the horizontal direction, thereby changing the friction between the stirring plate 32 and the material, achieving the effect of reducing frictional stirring. At the same time, when the adjusting rack 52 moves upward, it means that the friction inside the mixing tank 1 increases. At this time, the arc-shaped rack 45 drives the first gear ring 42 to rotate, making the gap between the multiple rotating plates 41 smaller, thereby slowing down the feeding speed of the equipment, thus avoiding continuous feeding, which would cause the material in the mixing tank 1 to increase, resulting in energy consumption and damage to the drive motor 81.

[0023] Preferred, Reference Figure 5 and Figure 6 A control component 6 for driving the movement of the adjusting rack 52 is provided on the lower side of the stirring shaft 31. By operating the control component 6, the movement of the adjusting rack 52 can be adjusted, so that the adjusting rack 52 can indirectly adjust the angle of the stirring plate 32.

[0024] Preferred, Reference Figure 6The control component 6 includes two support rings 61 mounted on the stirring shaft 31. One support ring 61 is fixedly mounted on the stirring shaft 31, while the other support ring 61 is slidably mounted on the stirring shaft 31. A guide groove is provided on the stirring shaft 31, and the support ring 61 is slidably mounted within the guide groove. The upper side of the sliding support ring 61 is fixedly mounted to a fixing ring at the bottom of the adjusting rack 52. Both support rings 61 are hinged to adjusting arms 62, and a counterweight ball 63 is positioned between the two adjusting arms 62. When the stirring shaft 31 rotates, the two counterweight balls 63 gradually move outward under the action of centrifugal force. At this time, the counterweight ball 63 will gradually pull the adjusting arm 62, causing the adjusting arm 62 to drive the sliding support ring 61 to descend. When the support ring 61 descends, the support ring 61 drives the adjusting component 5 to descend. At this time, the angle of the stirring plate 32 can be changed. When the speed of the stirring shaft 31 slows down, the centrifugal force of the support ring 61 gradually decreases. At the same time, the adjusting component 5 rises. At this time, the adjusting component 5 can change the angle of the stirring plate 32 again, so as to reduce the friction between it and the material. By changing the centrifugal force, the angle of the stirring plate 32 is adjusted to change the friction, avoiding the overheating and energy loss of the drive motor 81, while ensuring the uniformity of mixing.

[0025] Preferred, Reference Figure 4 The mixing tank 1 is equipped with a feeding component 7. After the angle of the mixing plate 32 is adjusted, the material in the mixing tank 1 is discharged through the feeding component 7. When the control component 6 adjusts the angle of the mixing plate 32, it can also adjust the opening and closing of the feeding component 7. That is to say, when the mixing plate 32 stops rotating, the material in the mixing tank 1 is mixed. At this time, the material is discharged through the feeding component 7, realizing the effect of automatic material discharge, reducing manual operation, and reducing the use of motor.

[0026] Preferred, Reference Figure 4 The feeding assembly 7 includes a sealing plate 71 slidably disposed inside the mixing tank 1. A second pull rope 72 is fixedly disposed between the sealing plate 71 and the fixing ring at the bottom of the adjusting rack 52. A second spring 73 for resetting is also disposed at the end of the sealing plate 71. In the initial state, the distance between the two support rings 61 is at its maximum, and the adjusting rack 52 is located at the uppermost side inside the mixing shaft 31. At this time, the sealing plate 71 is in the open state, and the second spring 73 is in the stretched state. When the mixing shaft 31 rotates, the two support rings 61 gradually approach each other, that is, the equipment starts to mix. As the support rings 61 descend, the second spring 73 gradually resets, and at the same time pulls the sealing plate 71 to seal the lower side of the mixing tank 1. When the equipment stops working, that is, when the equipment has finished mixing and can be unloaded, the two support rings 61 move away from each other again. At this time, the support rings 61 will pull the sealing plate 71 to move through the second pull rope 72, so that the bottom of the mixing tank 1 opens and the material is discharged, realizing the automatic discharge of the equipment.

[0027] Preferred, Reference Figure 1 and Figure 2 The mixing tank 1 is equipped with a drive assembly 8 for driving the mixing shaft 31 and the screw feeder 2 to rotate. The drive assembly 8 includes a drive motor 81 mounted on the mixing tank 1. The output end of the drive motor 81 is connected to the output end of the screw feeder 2. A transmission shaft 82 is rotatably mounted inside the mixing tank 1, and the transmission shaft 82 meshes with the output end of the drive motor 81. A drive gear 83 is mounted at the end of the transmission shaft 82, and a second gear ring 84 meshes with the drive gear 83 at the end of the mixing shaft 31. When the equipment is working, the drive motor 81 is controlled to operate. The screw feeder 2 is driven to work, and at the same time, the drive motor 81 drives the transmission shaft 82 to rotate. When the transmission shaft 82 rotates, the drive gear 83 at the bottom of the transmission shaft 82 drives the second gear ring 84 to rotate. At the same time, the second gear ring 84 drives the stirring shaft 31 to rotate. By using a single drive motor 81 to drive the screw feeder 2 and the stirring shaft 31 to rotate, the use of the drive motor 81 is reduced. At the same time, the angle of the stirring plate 32 is adjusted according to the viscosity of the material to avoid excessive friction between the stirring plate 32 and the material, which would cause the drive motor 81 to overheat and lose energy. This also ensures the mixing effect of the equipment.

[0028] Working principle The drive motor 81 starts, simultaneously driving the screw feeder 2 and the drive shaft 82 to rotate; the drive shaft 82 drives the stirring shaft 31 to rotate via the drive gear 83 and the second toothed ring 84; the screw feeder 2 conveys the raw materials to the mixing tank 1; when the stirring shaft 31 rotates, the counterweight ball 63 moves outward under the action of centrifugal force, pulling the sliding support ring 61 down along the guide groove via the adjusting arm 62, compressing the first spring 53; the sliding support ring 61 drives the adjusting rack 52 to descend, and the adjusting rack 52 drives the adjusting gear 51 to rotate, so that the stirring plate 32 gradually deflects from the initial state of being nearly horizontal to the vertical direction with an increasing angle; at the same time, when the adjusting rack 52 descends, it pulls the arc-shaped rack 45 through the first pull rope 54 to overcome the rotation of the elastic element, and the arc-shaped rack 45 drives the driven gear 44 and the first toothed ring 42 to rotate, and the first toothed ring 42 pulls the rotating plate 41 to rotate via the pull rod 43, so that the gap between the multiple rotating plates 41 increases synchronously as the angle of the stirring plate 32 increases, and the feeding speed of the screw feeder 2 increases accordingly; When the viscosity of the material increases, leading to increased stirring resistance, the rotational speed of the stirring shaft 31 decreases, the centrifugal force of the counterweight ball 63 decreases, and the first spring 53 pulls the adjusting rack 52 and the sliding support ring 61 to rise and reset. The rising of the adjusting rack 52 drives the adjusting gear 51 to rotate in the opposite direction, causing the stirring plate 32 to deflect towards a near-horizontal direction, reducing the contact area with the material and the stirring resistance. At the same time, the first pull rope 54 loosens, and the elastic element pushes the arc-shaped rack 45 to reset, reducing the gap between the rotating plates 41, lowering the feeding speed of the screw feeder 2, and preventing excessive material in the mixing tank 1 from increasing the load on the drive motor 81. When stirring begins, as the sliding support ring 61 descends, the second pull rope 72 loosens, and the sealing plate 71 moves toward the closing direction under the action of the second spring 73, sealing the bottom outlet of the mixing tank 1; when stirring is completed, the stirring shaft 31 stops rotating, the sliding support ring 61 rises to reset, and the sealing plate 71 is pulled by the second pull rope 72 to overcome the second spring 73 and open the outlet, so that the material is automatically discharged.

[0029] Beneficial effects: By sensing the change in the rotational speed of the stirring shaft 31 through the centrifugal force of the counterweight ball 63, and simultaneously adjusting the position of the adjusting component 5 according to the change in the centrifugal force of the counterweight ball 63, the adjusting component 5 can effectively and automatically adjust the angle of the stirring plate 32. This achieves the adaptive adjustment purpose that the stirring plate 32 tends to be more horizontal when the stirring resistance is greater, and more vertical when the stirring resistance is less. This effectively reduces the energy consumption and heat generation of the drive motor 81 under high viscosity materials. At the same time, the adjustment of the stirring plate 32 angle and the flow control component 4 work together to synchronously control the gap of the rotating plate 41, so that the larger the stirring plate 32 angle (for low viscosity materials), the more effective the adjustment. The device achieves an adaptive matching effect where the feeding speed is faster during rapid mixing and the feeding speed is slower during slow mixing (high viscosity). This avoids excessive accumulation of materials in the mixing tank 1, which would lead to a surge in energy consumption. At the same time, one drive motor 81 in the device drives the screw feeder 2, the mixing shaft 31, and the discharge assembly 7 simultaneously. During the mixing process, the mechanical linkage controlled by centrifugal force is used to achieve coordinated adjustment of the mixing plate 32 angle, feeding speed, and discharge sealing. This achieves the goal of completing multi-parameter coordinated control with a single power source, simplifies the transmission structure, and reduces manufacturing costs and operating energy consumption.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A slurry mixer for underground grouting in mines, comprising a mixing tank (1) and a screw feeder (2) for feeding materials into the mixing tank (1): characterized in that, It also includes a stirring assembly (3) set inside the spiral feeder (2) for stirring materials in the mixing tank (1). The stirring assembly (3) includes a stirring shaft (31) rotatably set inside the mixing tank (1). Multiple stirring plates (32) for stirring materials are set at equal angles on the stirring shaft (31), and the angles of the multiple stirring plates (32) can be adjusted according to the viscosity of the material. A flow control component (4) for controlling material flow rate is provided between the mixing tank (1) and the screw feeder (2). The flow control component (4) includes multiple rotating plates (41) that are rotatably arranged at the discharge port of the screw feeder (2) at equal angles. When the angle of the mixing plate (32) is adjusted, the gap between the multiple rotating plates (41) is adjusted synchronously.

2. The slurry mixer for underground grouting in mines according to claim 1, characterized in that, The flow control assembly (4) also includes a first toothed ring (42) rotatably disposed at the discharge port of the screw feeder (2), a pull rod (43) is hinged between the first toothed ring (42) and the rotating plate (41), and a driven gear (44) meshing with the first toothed ring (42) is also provided at the discharge port of the screw feeder (2), and an arc-shaped rack (45) meshes with the other side of the driven gear (44).

3. A slurry mixer for underground grouting in mines according to claim 2, characterized in that, An adjustment component (5) for adjusting the angle of the stirring plate (32) is provided inside the stirring shaft (31).

4. A slurry mixer for underground grouting in mines according to claim 3, characterized in that, The adjustment assembly (5) includes an adjustment gear (51) disposed at the end of the stirring plate (32). Multiple adjustment racks (52) are slidably disposed inside the stirring shaft (31), and the adjustment racks (52) mesh with the adjustment gear (51). Fixed rings are disposed at both ends of the multiple adjustment racks (52), so that the multiple adjustment racks (52) form a whole. Two first springs (53) are fixedly disposed on the fixed ring at the top of the adjustment racks (52), and the first springs (53) are fixedly disposed on the top surface of the inner wall of the stirring shaft (31). A first pull rope (54) is fixedly disposed on the fixed ring at the top of the adjustment racks (52), and the end of the first pull rope (54) is fixedly disposed on the arc-shaped rack (45) for pulling the arc-shaped rack (45) to rotate in a ring.

5. A slurry mixer for underground grouting in mines according to claim 4, characterized in that, A control component (6) for driving the movement of the adjusting rack (52) is provided on the lower side of the stirring shaft (31).

6. A slurry mixer for underground grouting in mines according to claim 5, characterized in that, The control component (6) includes two support rings (61) disposed on the stirring shaft (31). One of the support rings (61) is fixedly disposed on the stirring shaft (31), and the other support ring (61) is slidably disposed on the stirring shaft (31). A guide groove is provided on the stirring shaft (31), and the support ring (61) is slidably disposed in the guide groove. The upper side of the sliding support ring (61) is fixedly disposed with the fixing ring at the bottom of the adjusting rack (52). Both support rings (61) are hinged with adjusting arms (62), and a counterweight ball (63) is disposed between the two adjusting arms (62).

7. A slurry mixer for underground grouting in mines according to claim 6, characterized in that, The mixing tank (1) is equipped with a feeding component (7), and after the angle of the mixing plate (32) is adjusted, the material in the mixing tank (1) is discharged by the feeding component (7).

8. A slurry mixer for underground grouting in mines according to claim 7, characterized in that, The feeding assembly (7) includes a sealing plate (71) that is slidably disposed in the mixing tank (1). A second pull rope (72) is fixedly disposed between the sealing plate (71) and the fixing ring at the bottom of the adjusting rack (52). A second spring (73) for resetting is also disposed at the end of the sealing plate (71).

9. A slurry mixer for underground grouting in mines according to claim 8, characterized in that, The mixing tank (1) is provided with a drive assembly (8) for driving the mixing shaft (31) and the screw feeder (2) to rotate. The drive assembly (8) includes a drive motor (81) provided on the mixing tank (1). The output end of the drive motor (81) and the output end of the screw feeder (2) are connected in a transmission. A transmission shaft (82) is rotatably provided inside the mixing tank (1), and the transmission shaft (82) meshes with the output end of the drive motor (81). A drive gear (83) is provided at the end of the transmission shaft (82), and a second toothed ring (84) meshes with the drive gear (83) at the end of the mixing shaft (31).

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