Modified tailing sand grouting equipment

Abstract

The utility model relates to the technical field of grouting equipment, and discloses modified tailing sand grouting equipment which comprises a stirring tank, a first hollow shaft, a scraping plate, a second hollow shaft, a stirring blade with a shaft, a spline sleeve, a spline shaft, a spiral blade with a shaft, a circular plate and a spiral conveyor. During use, after the spline shaft slides, the circular plate can be driven to move finally, and therefore the discharging opening is opened or closed. When the discharging opening is closed, the first hollow shaft rotates, so that the scraping plate and the stirring blade with the shaft can be driven to rotate, tailing sand and other raw materials can be stirred to form mortar, and a mixture adhered to the side wall and the bottom wall of the stirring tank can be scraped off. The bottom wall of the stirring tank is of a conical structure, so that the materials are easily discharged from the discharging opening after being scraped. When the discharging port is opened, the second hollow shaft rotates, and finally the spiral blade with the shaft is driven to rotate, so that mortar is pushed to fall into the material receiving port from the discharging port and is conveyed by the spiral conveyor. A spiral conveying mode is adopted in the whole device, and the device is suitable for conveying high-concentration thick slurry.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grouting equipment, for example to a modified tailings sand grouting equipment. BACKGROUND

[0002] Tailings sand can be used to prepare mortar after being mixed with cement. Due to the small particle size and high water content of tailings sand, the dispersibility and fluidity of the mortar are poor, and the consistency is large during construction, which is easy to adhere to the inner wall of the equipment during grouting. Related technology (publication number: CN221741273U) discloses a grouting device, which comprises a base, a stirring barrel is fixed on the top of the base, and a stirring and cleaning mechanism is arranged in the stirring barrel. The stirring and cleaning mechanism comprises a barrel cover, the top of the stirring barrel is provided with the barrel cover, the top of the barrel cover is fixedly connected with a second motor, the power output end of the second motor is fixedly connected with a transmission rod, the inside of the transmission rod is fixedly connected with two first supporting rods, the two ends of each first supporting rod are fixedly connected with a stirring rod, the middle of the transmission rod is fixedly connected with a second supporting rod, and the two ends of the second supporting rod are fixedly connected with a cleaning scraper.

[0003] In the process of implementing the above-mentioned embodiments, it is found that at least the following problems exist in the related art:

[0004] The grouting device controls the operation of the motor, which can drive the transmission rod to rotate. Then the first supporting rod and the second supporting rod are synchronously rotated, and finally the plurality of stirring rods and the cleaning scraper are synchronously rotated. The side wall of the stirring cylinder can be cleaned during stirring to reduce the residual material. However, the cleaning scraper can only clean the side wall of the stirring barrel. And since the bottom wall of the stirring barrel is a horizontal structure, the material scraped off is not easy to discharge after falling on the bottom wall of the stirring barrel.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0006] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or to delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0007] The present application relates to the technical field of grouting equipment, for example to a modified tailings sand grouting equipment.

[0008] In some embodiments, the modified tailings sand grouting device comprises: a stirring tank; a first hollow shaft rotatably penetrating the top wall of the stirring tank and coaxially distributed with the stirring tank; a shaft stirring blade installed on the outer wall of the first hollow shaft and located inside the stirring tank; a scraper installed on the outer wall of the first hollow shaft, located inside the stirring tank, and respectively attached to the side wall and the bottom wall of the stirring tank; a second hollow shaft rotatably penetrating the first hollow shaft; a spline sleeve installed inside the second hollow shaft; a spline shaft slidably penetrating the spline sleeve; a shaft spiral blade installed at the bottom end of the spline shaft and located inside the discharge port of the stirring tank; a circular plate installed at the bottom end of the shaft spiral blade and located outside the stirring tank; a screw conveyor, the receiving port of the screw conveyor is in communication with the discharge port, the circular plate is located in the receiving port, and the diameter of the circular plate is smaller than the inner diameter of the receiving port; wherein the first hollow shaft and the second hollow shaft are controlled to rotate respectively to drive the scraper and the shaft stirring blade to rotate respectively; the spline shaft is controlled to slide to drive the circular plate to open or close the discharge port.

[0009] Optionally, it further comprises a support rod, a mounting plate and a first long shaft motor. The support rod is installed on the top wall of the stirring tank; the mounting plate is installed on the top end of the support rod; the first long shaft motor is installed on the mounting plate, and the rotating end of the first long shaft motor penetrates the mounting plate; wherein the first hollow shaft rotates under the drive of the first long shaft motor.

[0010] Optionally, it further comprises a first driving pulley, a first driven pulley and a first belt. The first driving pulley is installed on the rotating end of the first long shaft motor; the first driven pulley is installed on the outer wall of the first hollow shaft; the first belt is sleeved on the first driving pulley and the first driven pulley; wherein the diameter of the first driving pulley is smaller than the diameter of the first driven pulley.

[0011] Optionally, it further comprises a second long shaft motor. The second long shaft motor is installed on the mounting plate, and the rotating end of the second long shaft motor penetrates the mounting plate; wherein the second hollow shaft rotates under the drive of the second long shaft motor.

[0012] Optionally, it further comprises a second driving pulley, a second driven pulley and a second belt. The second driving pulley is installed on the rotating end of the second long shaft motor; the second driven pulley is installed on the outer wall of the second hollow shaft; the second belt is sleeved on the second driving pulley and the second driven pulley; wherein the diameter of the second driving pulley is smaller than the diameter of the second driven pulley.

[0013] Optionally, the device further comprises an electric push rod and a support. The electric push rod is installed on the mounting plate, and a moving end of the electric push rod penetrates through the mounting plate; the support is connected with the moving end of the electric push rod and is rotatably installed on the top end of the spline shaft.

[0014] Optionally, the device further comprises a deep groove ball bearing. The deep groove ball bearing is installed between the support and the spline shaft; wherein an outer ring of the deep groove ball bearing abuts against the support, and an inner ring of the deep groove ball bearing abuts against the spline shaft.

[0015] Optionally, the device further comprises a bearing seat and a first bearing. The bearing seat is installed on the top wall of the stirring tank and is sleeved on the first hollow shaft; the first bearing is installed between the bearing seat and the first hollow shaft.

[0016] Optionally, the device further comprises a second bearing. The second bearing is installed between the first hollow shaft and the second hollow shaft.

[0017] The modified tailings sand grouting device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0018] The modified tailing sand grouting equipment provided by the embodiments of the present disclosure comprises a stirring tank, a first hollow shaft, a scraper, a second hollow shaft, a shaft stirring blade, a spline sleeve, a spline shaft, a shaft spiral blade, a circular plate and a screw conveyor. The bottom wall of the stirring tank is conical, and the feeding opening of the stirring tank is used to add tailing sand and other raw materials into the stirring tank. The first hollow shaft is rotatably arranged in the top wall of the stirring tank and coaxially distributed with the stirring tank, and can rotate relative to the stirring tank. The shaft stirring blade is installed on the outer wall of the first hollow shaft and located in the stirring tank, and rotates under the driving of the first hollow shaft. The scraper is installed on the outer wall of the first hollow shaft and located in the stirring tank, and is in contact with the side wall and the bottom wall of the stirring tank respectively, and rotates under the driving of the first hollow shaft. The second hollow shaft is rotatably arranged in the first hollow shaft and can rotate relative to the first hollow shaft, and can further rotate relative to the stirring tank. The spline sleeve is installed in the second hollow shaft, and the spline shaft is slidably arranged in the spline sleeve. Through the design of the spline sleeve, the second hollow shaft can drive the spline shaft to rotate, and the spline shaft can slide relative to the second hollow shaft. The shaft spiral blade is installed at the bottom end of the spline shaft and located in the discharge opening of the stirring tank, and moves under the driving of the spline shaft. The circular plate is installed at the bottom end of the shaft spiral blade and located outside the stirring tank, and moves under the driving of the shaft spiral blade. The receiving opening of the screw conveyor is in communication with the discharge opening, and the discharge opening of the screw conveyor is used to discharge the mortar. The circular plate is located in the receiving opening, and the diameter of the circular plate is smaller than the inner diameter of the receiving opening. A gap is formed between the circular plate and the receiving opening, so that the mortar can fall from the discharge opening to the receiving opening. The first hollow shaft and the second hollow shaft are controlled to rotate respectively to drive the scraper and the shaft stirring blade to rotate respectively. The spline shaft is controlled to slide to drive the circular plate to open or close the discharge opening.

[0019] In use, the spline shaft slides under the driving of an external force to drive the shaft spiral blade to move, and further drive the circular plate to move, so as to open or close the discharge opening. When the discharge opening is in the closed state, the first hollow shaft rotates under the driving of an external force to drive the scraper and the shaft stirring blade to rotate synchronously. When the shaft stirring blade rotates, the tailing sand and other raw materials are stirred to form the mortar. When the scraper rotates, the mixture adhered to the side wall and the bottom wall of the stirring tank is scraped off. Since the bottom wall of the stirring tank is conical, the scraped mixture is easily discharged from the discharge opening. When the discharge opening is in the open state, the second hollow shaft rotates under the driving of an external force to drive the spline shaft to rotate through the spline sleeve. The spline shaft further drives the shaft spiral blade to rotate, so as to push the mortar to be discharged from the discharge opening and fall into the receiving opening. Finally, the mortar is conveyed by the screw conveyor and discharged from the discharge opening. At the same time, the whole device adopts the spiral conveying mode, which is particularly suitable for the conveying of high-concentration thick slurry.

[0020] The foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0021] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the application as defined by the claims. Like numbers refer to like elements throughout the drawings, which are not necessarily to scale, with:

[0022] Figure 1 is a sectional view of a modified tailings sand grouting equipment provided by the embodiments of the present disclosure;

[0023] Figure 2 is Figure 1 is an enlarged structure schematic view of A in FIG. 1;

[0024] Figure 3 is Figure 1 is an enlarged structure schematic view of B in FIG. 1;

[0025] Figure 4 is Figure 1 is an enlarged structure schematic view of C in FIG. 1;

[0026] Figure 5 is a front view of a modified tailings sand grouting equipment provided by the embodiments of the present disclosure.

[0027] Reference Signs:

[0028] 1: agitator tank; 2: first hollow shaft; 3: shafted agitator blade; 4: scraper; 5: second hollow shaft; 6: spline sleeve; 7: spline shaft; 8: shafted helical blade; 9: circular plate; 10: screw conveyor; 11: support rod; 12: mounting plate; 13: first long shaft motor; 14: second long shaft motor; 15: electric push rod; 16: support; 17: deep groove ball bearing; 18: bearing seat; 19: first bearing; 20: second bearing. DETAILED DESCRIPTION

[0029] In order to enable persons skilled in the art to better understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to illustrate the drawings.

[0030] The terms "first", "second", etc. in the description, claims, and drawings of the embodiments of the present disclosure, and the above-described figures are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0031] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the term can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0032] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0033] Unless otherwise specified, the term "a plurality of" means two or more.

[0034] In the embodiments of the present disclosure, the character " / " represents a "or" relationship between the objects before and after. For example, A / B represents: A or B.

[0035] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B, which means: A or B, or, A and B, three kinds of relationships.

[0036] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0037] In combination with Figures 1 to 5As shown, the embodiment of the present disclosure provides a modified tailings sand grouting equipment, which comprises a stirring tank 1, a first hollow shaft 2, a shaft stirring blade 3, a scraper 4, a second hollow shaft 5, a spline sleeve 6, a spline shaft 7, a shaft spiral blade 8, a circular plate 9 and a screw conveyor 10. The bottom wall of the stirring tank 1 is conical, and the feeding port of the stirring tank 1 is used to add tailings sand and other raw materials to the inside. The first hollow shaft 2 is rotatably arranged in the top wall of the stirring tank 1 and coaxially distributed with the stirring tank 1, and can rotate relative to the stirring tank 1. The shaft stirring blade 3 is installed on the outer wall of the first hollow shaft 2 and located in the inside of the stirring tank 1, and rotates under the driving of the second hollow shaft 5. The scraper 4 is installed on the outer wall of the first hollow shaft 2 and located in the inside of the stirring tank 1, and respectively adheres to the side wall and the bottom wall of the stirring tank 1, and rotates under the driving of the first hollow shaft 2. The second hollow shaft 5 is rotatably arranged in the first hollow shaft 2 and can rotate relative to the first hollow shaft 2, and further can rotate relative to the stirring tank 1. The spline sleeve 6 is installed in the inside of the second hollow shaft 5, and the spline shaft 7 is slidably arranged in the spline sleeve 6. Through the design of the spline sleeve 6, the second hollow shaft 5 drives the spline shaft 7 to rotate at the same time, and the spline shaft 7 can slide relative to the second hollow shaft 5. The shaft spiral blade 8 is installed at the bottom end of the spline shaft 7 and located in the discharge port of the stirring tank 1 and moves under the driving of the spline shaft 7. The circular plate 9 is installed at the bottom end of the shaft spiral blade 8 and located outside the stirring tank 1 and moves under the driving of the shaft spiral blade 8. The receiving port of the screw conveyor 10 is connected with the discharge port, and the discharge port of the screw conveyor 10 is used to discharge the mortar. The circular plate 9 is located in the receiving port, and the diameter size of the circular plate 9 is smaller than the inner diameter size of the receiving port. So that a gap is formed between the circular plate 9 and the receiving port, so that the mortar can fall from the discharge port to the receiving port. Wherein, the first hollow shaft 2 and the second hollow shaft 5 are controlled to rotate respectively to drive the scraper 4 and the shaft stirring blade 3 to rotate respectively. The spline shaft 7 is controlled to slide to drive the circular plate 9 to open or close the discharge port.

[0038] The modified tailings sand grouting equipment provided by the embodiments of the present disclosure can drive the shaft screw blade 8 to move after the spline shaft 7 slides under the driving of external force. Then the circular plate 9 is driven to move, so as to open or close the discharge port. When the discharge port is in the closed state, the first hollow shaft 2 is driven to rotate under the driving of external force, so as to drive the scraper 4 and the shaft stirring blade 3 to rotate synchronously. When the shaft stirring blade 3 rotates, the mixture adhered to the side wall and the bottom wall of the stirring tank 1 can be scraped off. Since the bottom wall of the stirring tank 1 is in a conical structure, the mixture scraped off can be easily discharged from the discharge port. When the discharge port is in the open state, the second hollow shaft 5 is driven to rotate under the driving of external force, so as to drive the spline shaft 7 to rotate through the spline sleeve 6. Then the shaft screw blade 8 is driven to rotate, so as to push the mortar out of the discharge port and drop into the receiving port. Finally, the mortar is conveyed by the spiral conveyor 10 and discharged from the discharge port. At the same time, the whole body adopts the spiral conveying mode, which is particularly suitable for conveying high-concentration thick mortar.

[0039] Optionally, as shown in Figure 1 and Figure 5 , the modified tailings sand grouting equipment further includes a support rod 11, a mounting plate 12 and a first long shaft motor 13. The support rod 11 is installed on the top wall of the stirring tank 1 and used to support the mounting plate 12. The mounting plate 12 is installed on the top end of the support rod 11 and used to support the first long shaft motor 13, the second long shaft motor 14 and the electric push rod 15. The first long shaft motor 13 is installed on the mounting plate 12, and the rotating end of the first long shaft motor 13 penetrates through the mounting plate 12 and used to provide driving force to realize the rotating function. The first hollow shaft 2 rotates under the driving of the first long shaft motor 13.

[0040] In the embodiments of the present disclosure, the first hollow shaft 2 rotates under the driving of the first long shaft motor 13, so as to realize the free rotation function of the scraper 4 and the shaft stirring blade 3, thereby saving manpower.

[0041] Optionally, as shown in Figure 1 and Figure 5 , the modified tailings sand grouting equipment further includes a first driving pulley, a first driven pulley and a first belt. The first driving pulley is installed on the rotating end of the first long shaft motor 13 and rotates under the driving of the first long shaft motor 13. The first driven pulley is installed on the outer wall of the first hollow shaft 2 and used to drive the first hollow shaft 2 to rotate. The first belt is sleeved on the first driving pulley and the first driven pulley and used to transmit driving force. The diameter size of the first driving pulley is smaller than that of the first driven pulley.

[0042] In the embodiment of the present disclosure, the first long shaft motor 13 is controlled to work, so as to drive the first driving pulley to rotate. Through the first belt, the first driven pulley is driven to rotate, and the first hollow shaft 2 is further driven to rotate. In addition, the diameter of the first driving pulley is smaller than that of the first driven pulley, so as to reduce the rotating speed and improve the output torque.

[0043] Optionally, as shown in Figure 1 and Figure 5 , the second long shaft motor 14 is further included. The second long shaft motor 14 is installed on the mounting plate 12, and the rotating end of the second long shaft motor 14 penetrates through the mounting plate 12, so as to provide driving force to realize the rotating motion function. The second hollow shaft 5 rotates under the driving of the second long shaft motor 14.

[0044] In the embodiment of the present disclosure, the second hollow shaft 5 rotates under the driving of the second long shaft motor 14, and the free rotation function of the belt shaft spiral blade 8 is realized, so as to save manpower.

[0045] Optionally, as shown in Figure 1 , Figure 4 and , the second driving pulley, the second driven pulley and the second belt are further included. The second driving pulley is installed on the rotating end of the second long shaft motor 14 and rotates under the driving of the second long shaft motor 14. The second driven pulley is installed on the outer wall of the second hollow shaft 5 and is used to drive the second hollow shaft 5 to rotate. The second belt is sleeved on the second driving pulley and the second driven pulley and is used to transmit driving force. The diameter of the second driving pulley is smaller than that of the second driven pulley.

[0046] In the embodiment of the present disclosure, the second long shaft motor 14 is controlled to work, so as to drive the second driving pulley to rotate. Through the second belt, the second driven pulley is driven to rotate, and the second hollow shaft 5 is further driven to rotate. In addition, the diameter of the second driving pulley is smaller than that of the second driven pulley, so as to reduce the rotating speed and improve the output torque.

[0047] Figure 1 Optionally, as shown in Figure 2 , Figure 5 and , the electric push rod 15 and the support 16 are further included. The electric push rod 15 is installed on the mounting plate 12, and the moving end of the electric push rod 15 penetrates through the mounting plate 12, so as to provide driving force to realize the linear motion function. The support 16 is connected with the moving end of the electric push rod 15 and is rotatably installed on the top end of the spline shaft 7. The support 16 moves under the driving of the electric push rod 15 and can rotate relative to the spline shaft 7.

[0048] In the embodiments of the present disclosure, the electric push rod 15 is controlled to work, i.e. to drive the support 16 to move, and then to drive the spline shaft 7 to slide. Since the spline shaft 7 and the support 16 can rotate relative to each other, the support 16 will not rotate with the spline shaft 7, thereby avoiding interference.

[0049] Optionally, as shown in Figure 1 , Figure 2 and Figure 5 , the deep groove ball bearing 17 is further included. The deep groove ball bearing 17 is installed between the support 16 and the spline shaft 7. The outer ring of the deep groove ball bearing 17 abuts against the support 16, and the inner ring of the deep groove ball bearing 17 abuts against the spline shaft 7.

[0050] In the embodiments of the present disclosure, the deep groove ball bearing 17 is used to enable the support 16 and the spline shaft 7 to rotate relative to each other, and to reduce the friction between the support 16 and the spline shaft 7.

[0051] Optionally, as shown in Figure 1 and Figure 3 , the bearing seat 18 and the first bearing 19 are further included. The bearing seat 18 is installed on the top wall of the stirring tank 1 and is sleeved on the first hollow shaft 2. The first bearing 19 is installed between the bearing seat 18 and the first hollow shaft 2.

[0052] In the embodiments of the present disclosure, the bearing seat 18 is used to support and position the first bearing 19. The first bearing 19 is used to support and install the rotatable first hollow shaft 2, to reduce the friction on the first hollow shaft 2, and to improve the rotation accuracy of the first hollow shaft 2.

[0053] Optionally, as shown in Figure 1 and Figure 3 , the second bearing 20 is further included. The second bearing 20 is installed between the first hollow shaft 2 and the second hollow shaft 5.

[0054] In the embodiments of the present disclosure, the second bearing 20 is used to reduce the friction between the first hollow shaft 2 and the second hollow shaft 5, and to improve the rotation accuracy of the second hollow shaft 5.

[0055] The above description and drawings sufficiently show the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A modified tailings sand grouting apparatus, characterized by, It comprises: a stirring tank; a first hollow shaft, rotatably penetrating the top wall of the stirring tank and coaxially distributed with the stirring tank; a shaft stirring blade, installed on the outer wall of the first hollow shaft and located inside the stirring tank; a scraper, installed on the outer wall of the first hollow shaft, located inside the stirring tank, and respectively attached to the side wall and bottom wall of the stirring tank; a second hollow shaft, rotatably penetrating the first hollow shaft; a spline sleeve, installed inside the second hollow shaft; a spline shaft, slidably penetrating the spline sleeve; a shaft screw blade, installed at the bottom end of the spline shaft and located inside the discharge port of the stirring tank; a circular plate, installed at the bottom end of the shaft screw blade and located outside the stirring tank; a screw conveyor, the receiving port of the screw conveyor being in communication with the discharge port, the circular plate being located in the receiving port, and the diameter of the circular plate being smaller than the inner diameter of the receiving port; wherein the first hollow shaft and the second hollow shaft are controlled to rotate respectively to drive the scraper and the shaft stirring blade to rotate respectively, and the spline shaft is controlled to slide to drive the circular plate to open or close the discharge port.

2. A modified tailings sand grouting apparatus as claimed in claim 1, wherein, It further comprises: a support rod, installed on the top wall of the stirring tank; a mounting plate, installed on the top end of the support rod; a first long shaft motor, installed on the mounting plate, the rotating end of the first long shaft motor penetrating the mounting plate; wherein the first hollow shaft rotates under the drive of the first long shaft motor.

3. A modified tailings sand grouting apparatus as claimed in claim 2, wherein, It further comprises: a first driving pulley, installed on the rotating end of the first long shaft motor; a first driven pulley, installed on the outer wall of the first hollow shaft; a first belt, sleeved on the first driving pulley and the first driven pulley; wherein the diameter of the first driving pulley is smaller than the diameter of the first driven pulley.

4. The modified tailings sand grouting apparatus of claim 2, wherein, It further comprises: a second long shaft motor, installed on the mounting plate, the rotating end of the second long shaft motor penetrating the mounting plate; wherein the second hollow shaft rotates under the drive of the second long shaft motor.

5. A modified tailings sand grouting apparatus as claimed in claim 4, wherein, It further comprises: a second driving pulley, installed on the rotating end of the second long shaft motor; a second driven pulley, installed on the outer wall of the second hollow shaft; a second belt, sleeved on the second driving pulley and the second driven pulley; wherein the diameter of the second driving pulley is smaller than the diameter of the second driven pulley.

6. The modified tailings sand grouting apparatus of claim 2, wherein, It further comprises: an electric push rod, installed on the mounting plate, the moving end of the electric push rod penetrating the mounting plate; a support, connected to the moving end of the electric push rod and rotatably installed on the top end of the spline shaft.

7. A modified tailings sand grouting apparatus as claimed in claim 6, wherein, It further comprises: a deep groove ball bearing, installed between the support and the spline shaft; wherein the outer ring of the deep groove ball bearing abuts against the support, and the inner ring of the deep groove ball bearing abuts against the spline shaft.

8. A modified tailings sand grouting apparatus as claimed in any one of claims 1 to 7, wherein, It further comprises: a bearing seat, installed on the top wall of the stirring tank and sleeved on the first hollow shaft; a first bearing, installed between the bearing seat and the first hollow shaft.

9. A modified tailings sand grouting apparatus as claimed in any one of claims 1 to 7, wherein, It further comprises: a second bearing, installed between the first hollow shaft and the second hollow shaft.

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