Aquifer grouting equipment, grouting method and application in coal mining

Abstract

The present invention belongs to the technical field of coal mine grouting, specifically grouting equipment for aquifers, a grouting method and its application in coal mine mining. The grouting equipment for aquifers includes a housing assembly. A stirring assembly is provided at the top of the housing assembly, and a plurality of adjusting assemblies are evenly arranged on the inner wall of the housing assembly. The housing assembly includes an outer shell, and a stirring chamber is opened at the top of the outer shell. The stirring assembly includes a top frame, and a main shaft is rotatably connected to the center of the top frame. The adjusting assembly includes a plurality of adjusting frames, and a plurality of filter holes are evenly arranged inside the adjusting frames. Slide grooves are opened at the ends of the adjusting frames close to the inner wall of the stirring chamber, and a moving plate is hermetically slidably connected inside the slide grooves. This equipment has high stirring efficiency and good stirring effect on grouting materials, meets the actual slurry production requirements, has high stability, strong self-adaptability, and simple operation, and can realize the stirring requirements for different grouting materials to meet the needs of mass production.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mine grouting, specifically an aquifer grouting device, a grouting method and their applications in coal mining. Background Art

[0002] Coal seam grouting equipment is used for grouting operations in coal mines. Its main function is to inject slurry into the cracks and pores of the coal seam to achieve the purpose of water blocking or coal seam reinforcement. Among them, it is necessary to mix grouting materials (such as cement, bentonite, etc.) with water or other additives into a uniform slurry. Therefore, the design and function of the stirring equipment for grouting materials are to ensure that the grouting materials can be mixed quickly and evenly to meet the grouting requirements of different projects.

[0003] Chinese invention patent CN114109440A discloses a hydraulic grouting device for grouting transformation of loose aquifers in coal mines, including a machine platform, a grouting bin and a grouting mechanism with double - acting hydraulics; the grouting bin is installed on the top of the machine platform, and the grouting mechanism with double - acting hydraulics is installed inside the grouting bin; the grouting mechanism with double - acting hydraulics is connected with a slurry outlet valve; the slurry outlet valve is installed on the side wall of the grouting bin; this grouting device has low grouting efficiency and poor grouting effect.

[0004] Chinese invention patent CN110242326B discloses a grouting device for tunnel slurry, including a stirring tank, a grouting tank and a pushing component. There are multiple stirring rods and two rollers inside the stirring tank, and protrusions are provided on the rollers; the grouting tank is located below the stirring tank and is connected with the stirring tank through a corrugated pipe; the pushing component pushes the side wall of the grouting tank to tilt to achieve grouting; this grouting device has a high operation difficulty and low operation accuracy.

[0005] Since the concentration of the grouting material is different at different heights inside the stirring cavity, the acting forces on the grouting material during stirring are different, and the stirring efficiency is different, which will further affect the subsequent stirring quality and effect.

[0006] And during the stirring process, part of the grouting material is likely to adhere to the inner wall of the stirring cavity, which will not only reduce the stirring quality but also cause pollution to the subsequent stirring of the grouting material.

[0007] When using an adjusting frame to cooperate with stirring blades to achieve the co - stirring process of the grouting material, part of the grouting material is likely to block the outer surface of the adjusting frame and the inside of the filter holes. This grouting material will affect the stirring efficiency and quality, thereby reducing the slurry quality. Summary of the Invention

[0008] In view of the above problems, the present invention provides an aquifer grouting device, a grouting method and their applications in coal mining.

[0009] To achieve the above object, the present invention provides the following technical solutions: an aquifer grouting device, including a housing assembly, a stirring assembly is provided at the top of the housing assembly, and a plurality of adjusting assemblies are evenly provided on the inner wall of the housing assembly:

[0010] The housing assembly includes an outer shell, and a stirring cavity is opened at the top of the outer shell;

[0011] The stirring assembly includes a top frame, and a main shaft is rotatably connected to the center of the top frame;

[0012] The adjusting assembly includes a plurality of adjusting frames, a plurality of filter holes are evenly provided inside the adjusting frames, sliding grooves are opened at the ends of the adjusting frames close to the inner wall of the stirring cavity, a moving plate is hermetically slidably connected inside the sliding grooves, a plurality of fixing plates are evenly provided on the inner wall of the stirring cavity, two electromagnetic blocks are symmetrically provided on the side of the fixing plate away from the adjusting frame, elastic pulling blocks are provided at the other ends of the electromagnetic blocks through tension sensors, magnetic end blocks are provided at the other ends of the elastic pulling blocks, and a plurality of arc-shaped working blocks are symmetrically provided on the side of the adjusting frame close to the fixing plate through hinge seats.

[0013] In this application, by adjusting the inclination angle of the adjusting frame, the stirring effect of the grouting material inside the stirring cavity is further realized to ensure the stirring quality; and when the grouting material is docked or blocked, the grouting material can be quickly discharged by means of the inclination of the adjusting frame; after stirring, the moving plate drives the elastic scraper to scrape and clean the inner wall of the stirring cavity; and when the cleaning is completed, the mutual collision between the adjusting frame and the fixing plate further improves the self-cleaning effect, with stronger adaptability and better adjustability.

[0014] Preferably, a discharge pipe is connected to one side of the outer shell, the liquid inlet end of the discharge pipe passes through the outer shell and is connected to the inner bottom of the stirring cavity, the liquid outlet end of the discharge pipe is connected to a control valve, the output end of the control valve is connected to the input end of a grouting pump, a plurality of feed ports are formed between the top frame and the top of the stirring cavity, and a control screen is provided on one side of the outer shell, and the control screen electrically controls each electrical component.

[0015] Preferably, the bottom of the top frame is fixedly connected to the top of the outer shell, an installation plate is provided on one side top of the top frame, a driving motor is provided on the top of the installation plate, a support frame is provided on the side wall of the installation plate, the side wall of the support frame is fixedly connected to the side wall of the driving motor, a driving wheel is provided at the output end of the driving motor, a driven wheel is provided on the outer surface of the top of the main shaft, a plurality of transmission belts are evenly connected to the side walls of the driving wheel and the driven wheel in a transmission manner, and a protective cover is provided on the outer surfaces of the driving wheel and the driven wheel.

[0016] Preferably, a connecting frame is provided at the center of the top of the top frame. Intermediate holes are provided at the centers of both the top frame and the connecting frame. A bearing frame is provided on the side wall of the connecting frame and inside the intermediate hole. The inner wall of the bearing frame is rotatably connected to the outer surface of the main shaft. A rotating wheel is provided at the bottom of the main shaft. A plurality of stirring blades are evenly provided on the outer surface of the rotating wheel. The stirring blades are inclined and the rotation direction is from the end of the adjusting frame to the end of the fixing plate.

[0017] Preferably, a plurality of the adjusting frames are evenly distributed at the inner wall end of the stirring cavity. A plurality of docking holes are evenly provided inside the moving plate. The filtering holes are matched with the docking holes. A plurality of reset springs are evenly provided on the side wall of the moving plate. The other end of the reset spring is fixedly connected to the inner wall of the sliding groove.

[0018] Preferably, an elastic scraping head is provided at one end of the moving plate away from the main shaft. The elastic scraping head is matched with the inner wall of the stirring cavity. A trapezoidal hole is provided at one end of the moving plate close to the main shaft. The trapezoidal hole is an isosceles trapezoid structure. A suspension rope is provided at the inner top of the sliding groove. A counterweight rod is provided at the bottom of the suspension rope. The outer surface of the counterweight rod is matched with the inner wall of the trapezoidal hole.

[0019] Preferably, a T-shaped hole is provided inside the fixing plate. The inner wall of the T-shaped hole is hermetically slidably connected to the outer surface of the arc-shaped workpiece. The arc-shaped workpiece is slidably connected between two elastic pulling blocks. One end of the arc-shaped workpiece away from the adjusting frame is fixedly connected to the side wall of the magnetic end block. The tension sensor is used to detect the tension value received by the elastic pulling block. The end faces of the electromagnetic block and the magnetic end block facing each other have different magnetic polarities. The arc-shaped workpiece is matched with the inner wall of the stirring cavity.

[0020] The grouting method of the aquifer grouting equipment as described above includes the following steps:

[0021] S1. The main shaft rotates and stirs and mixes the grouting material inside the stirring cavity, and the grouting material collides with the side wall of the adjusting frame;

[0022] S2. When the grouting material accumulates on one side of the adjusting frame or the filtering holes are blocked, the tension value detected by the corresponding position tension sensor increases. The magnetic end block drives the arc-shaped workpiece to move away from the fixing plate end. The adjusting frame tilts. The extrusion force applied by the counterweight rod to the side wall of the trapezoidal hole increases. The moving plate moves along the sliding groove away from the main shaft end;

[0023] S3. After the stirring and mixing of the grouting material is completed, the arc-shaped workpiece drives the adjusting frame to tilt and move. When the tension value detected by the tension sensor on one side increases, the tilting angle of the adjusting frame driven by the arc-shaped workpiece increases. The extrusion force applied by the counterweight rod to the side wall of the trapezoidal hole increases. The sliding distance of the moving plate along the sliding groove increases;

[0024] S4. After the electromagnetic block is powered off, the adjusting frame collides with the fixing plate, the extrusion force exerted by the counterweight rod on the trapezoidal hole changes continuously, and the moving plate moves back and forth continuously inside the sliding groove.

[0025] Application of the described aquifer grouting equipment in coal mining.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. Through the mutual cooperation of components such as the housing assembly, stirring assembly, and adjusting assembly in this application, the equipment has high stirring efficiency for the grouting material, good stirring effect, meets the actual slurry production requirements, has high stability, strong self - adaptability, and simple operation, and can realize the stirring requirements for different grouting materials to meet the needs of mass production.

[0028] 2. Through the mutual cooperation of components such as the adjusting frame and the arc - shaped workpiece in this application, during the stirring process of the grouting material, the equipment can also drain and dredge the accumulation or blockage of the grouting material, ensure the stable and efficient mixing and stirring of the grouting material, and avoid affecting the quality of the subsequent slurry.

[0029] 3. Through the mutual cooperation of components such as the stirring cavity and the electromagnetic block in this application, after the stirring is completed, by means of the reciprocating tilting movement of the adjusting frame, it can also realize the scraping and cleaning of the grouting material attached to the inner wall of the stirring cavity, and can also adaptively adjust the scraping force to ensure the cleaning quality.

[0030] 4. Through the mutual cooperation of components such as the fixing plate and the moving plate in this application, after the scraping is completed, under the action of the collision force between the adjusting frame and the fixing plate, the equipment realizes the self - cleaning process of the adjusting frame and the moving plate, meets the cleaning requirements, and improves the recycling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three - dimensional structure diagram of the present invention;

[0032] Figure 2 is a three - dimensional structure diagram of another perspective of the present invention;

[0033] Figure 3 is a front - view internal three - dimensional structure diagram of the present invention;

[0034] Figure 4 is Figure 3 the enlarged view at A in

[0035] Figure 5 is a front - view 45 - degree - angle internal three - dimensional structure diagram of the present invention;

[0036] Figure 6 is Figure 5Enlarged schematic diagram at position B in [the figure];

[0037] Figure 7 Upper view internal three-dimensional structure schematic diagram of the present invention;

[0038] Figure 8 is Figure 7 Enlarged schematic diagram at position C in [the figure];

[0039] Figure 9 Explosion three-dimensional structure schematic diagram of the present invention;

[0040] Figure 10 Explosion three-dimensional structure schematic diagram of the adjustment component of the present invention.

[0041] In the figure: 1. Housing assembly; 101. Outer shell; 102. Stirring chamber; 103. Discharge pipe; 104. Control valve; 105. Feed inlet; 106. Control panel; 2. Stirring component; 201. Top frame; 202. Mounting plate; 203. Support frame; 204. Driving motor; 205. Driving wheel; 206. Driven wheel; 207. Transmission belt; 208. Protective cover; 209. Connecting frame; 210. Main shaft; 211. Rotating wheel; 212. Stirring blade; 213. Intermediate hole; 214. Bearing bracket; 3. Adjustment component; 301. Adjustment frame; 302. Sliding groove; 303. Filter hole; 304. Moving plate; 305. Elastic scraper; 306. Docking hole; 307. Trapezoidal hole; 308. Return spring; 309. Suspension rope; 310. Counterweight rod; 311. Fixed plate; 312. I-shaped hole; 313. Arc-shaped workpiece; 314. Hinge seat; 315. Electromagnet; 316. Tensile sensor; 317. Elastic pull block; 318. Magnetic end block. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] As Figure 1-10 shown, the aquifer grouting equipment includes a housing assembly 1. A stirring component 2 is provided at the top of the housing assembly 1. The stirring component 2 stirs and mixes the grouting materials such as cement and water inside the housing assembly 1 to form the required slurry. A plurality of adjustment components 3 are evenly provided on the inner wall of the housing assembly 1. The adjustment components 3 work inside the housing assembly 1 and realize precise adjustment of the stirring.

[0044] The housing assembly 1 includes a housing 101. A stirring chamber 102 is provided at the top of the housing 101, and the required stirring process is carried out inside the stirring chamber 102. One side of the housing 101 is connected to a discharge pipe 103. The liquid inlet end of the discharge pipe 103 passes through the housing 101 and is connected to the inner bottom of the stirring chamber 102. The liquid outlet end of the discharge pipe 103 is connected to a control valve 104. The output end of the control valve 104 is connected to the input end of a grouting pump. When the stirring is completed to form a slurry, the control valve 104 is opened, the grouting pump is started and applies a suction force, and the slurry inside the stirring chamber 102 is discharged along the discharge pipe 103 to wait for the subsequent grouting process. A plurality of feeding ports 105 are formed between the top frame 201 and the top of the stirring chamber 102. Various required grouting materials, generally cement, water, etc., are poured into the stirring chamber 102 in proportion along the feeding ports 105. A control panel 106 is provided on one side of the housing 101, and the control panel 106 electrically controls each electrical component.

[0045] The stirring assembly 2 includes a top frame 201. A main shaft 210 is rotatably connected to the center of the top frame 201. The main shaft 210 rotates to stir and mix the grouting materials inside the stirring chamber 102 to form a slurry. The bottom of the top frame 201 is fixedly connected to the top of the housing 101. An installation plate 202 is provided at the top of one side of the top frame 201. A driving motor 204 is provided on the top of the installation plate 202. The installation plate 202 connects the driving motor 204 and the top frame 201 to each other. A support frame 203 is provided on the side wall of the installation plate 202. The side wall of the support frame 203 is fixedly connected to the side wall of the driving motor 204. The setting of the support frame 203 further improves the working stability of the driving motor 204. A driving wheel 205 is provided at the output end of the driving motor 204. A driven wheel 206 is provided on the outer surface of the top of the main shaft 210. A plurality of transmission belts 207 are evenly connected in transmission between the side walls of the driving wheel 205 and the driven wheel 206. When the driving motor 204 is started, it drives the driving wheel 205 to rotate. The driving wheel 205 drives the driven wheel 206 to rotate through the transmission belt 207. A protective cover 208 is provided on the outer surfaces of the driving wheel 205 and the driven wheel 206. The protective cover 208 wraps and protects the internal driving wheel 205, driven wheel 206 and transmission belt 207 to prevent accidental injury to the operator when the driving wheel 205, driven wheel 206 and transmission belt 207 become disengaged.

[0046] At the center of the top of the top frame 201, there is a connecting frame 209. Intermediate holes 213 are provided at the centers of the top frame 201 and the connecting frame 209. The intermediate holes 213 are for the main shaft 210 to pass through. Inside the intermediate hole 213 on the side wall of the connecting frame 209, there is a bearing frame 214. The inner wall of the bearing frame 214 is rotatably connected to the outer surface of the main shaft 210. The setting of the bearing frame 214 further improves the stability and safety of the rotation of the main shaft 210. At the bottom of the main shaft 210, there is a rotating wheel 211. A plurality of stirring blades 212 are evenly provided on the outer surface of the rotating wheel 211. The stirring blades 212 are inclined and the rotation direction is from the end of the adjusting frame 301 to the end of the fixing plate 311. When the main shaft 210 rotates, the plurality of stirring blades 212 are driven to rotate by the rotating wheel 211 at the bottom. The stirring blades 212 stir the grouting material inside the stirring chamber 102 to form the required slurry, further improving the stirring efficiency and effect.

[0047] The adjusting assembly 3 includes a plurality of adjusting frames 301. At the end of each adjusting frame 301 close to the inner wall of the stirring chamber 102, a sliding groove 302 is provided. Inside the sliding groove 302, a moving plate 304 is hermetically and slidably connected. The moving plate 304 can reciprocate inside the sliding groove 302, thereby improving the stirring efficiency of the grouting material inside the stirring chamber 102. At the same time, it can also scrape and clean the inner wall of the stirring chamber 102, preventing excessive adhesion of the grouting material to the inner wall of the stirring chamber 102 and reducing the subsequent stirring quality.

[0048] The plurality of adjusting frames 301 are evenly distributed at the end of the inner wall of the stirring chamber 102. However, the actual position of the adjusting frame 301 can be adjusted correspondingly according to different stirring requirements, so as to cooperate with the rotation of the main shaft 210 to improve the stirring effect of the grouting material inside the stirring chamber 102. A plurality of filter holes 303 are evenly provided inside the adjusting frame 301. A plurality of docking holes 306 are evenly provided inside the moving plate 304. The filter holes 303 and the docking holes 306 are matched. The grouting material inside the stirring chamber 102 can flow along the overlapping position of the filter holes 303 and the docking holes 306, thereby improving the original mixing quality. At the same time, when the filter holes 303 and the docking holes 306 are blocked, the moving plate 304 moves along the sliding groove 302, thereby realizing the cleaning and filtering of the filter holes 303 and the docking holes 306. It has stronger adaptability and higher stability. A plurality of reset springs 308 are evenly provided on the side wall of the moving plate 304. The other end of the reset spring 308 is fixedly connected to the inner wall of the sliding groove 302. The setting of the reset spring 308 further improves the elastic reset performance of the moving plate 304.

[0049] An elastic scraping head 305 is provided at one end of the moving plate 304 away from the main shaft 210. The elastic scraping head 305 is matched with the inner wall of the stirring cavity 102. When the elastic scraping head 305 is in mutual extrusion contact with the inner wall of the stirring cavity 102, the elastic scraping head 305 can scrape and clean the inner wall of the stirring cavity 102, thereby improving the cleaning effect on the inner wall of the stirring cavity 102. A trapezoidal hole 307 is provided at one end of the moving plate 304 close to the main shaft 210. The trapezoidal hole 307 is of an isosceles trapezoid structure. The setting of the shape of the trapezoidal hole 307 further improves the efficiency and synchronism of the movement of the moving plate 304 along the sliding groove 302. A suspension rope 309 is provided at the inner top of the sliding groove 302. A counterweight rod 310 is provided at the bottom of the suspension rope 309. The counterweight rod 310 has a certain weight and has a vertically downward characteristic under the suspension of the suspension rope 309. The outer surface of the counterweight rod 310 is matched with the inner wall of the trapezoidal hole 307. When the adjusting frame 301 is tilted, the counterweight rod 310 is always in a vertical state under the suspension of the suspension rope 309 and its own weight. The counterweight rod 310 exerts a force on the inner wall of the trapezoidal hole 307, and the counterweight rod 310 drives the moving plate 304 to stretch the return spring 308 and move away from the main shaft 210 end.

[0050] A plurality of fixing plates 311 are evenly provided on the inner wall of the stirring cavity 102. The positions of the fixing plates 311 remain unchanged, and the gaps between the plurality of fixing plates 311 are equal. Two electromagnetic blocks 315 are symmetrically provided on one side of the fixing plate 311 away from the adjusting frame 301. Elastic pulling blocks 317 are provided at the other ends of the electromagnetic blocks 315 through tension sensors 316. The tension sensors 316 are used to detect the tension value received by the elastic pulling blocks 317. When the tensile force received by the elastic pulling blocks 317 increases, the tension value detected by the tension sensors 316 correspondingly increases. A magnetic end block 318 is provided at the other end of the elastic pulling block 317. The end faces of the electromagnetic block 315 and the magnetic end block 318 facing each other have different magnetic polarities. Therefore, when the energizing current of the electromagnetic block 315 increases, the magnetic force of the electromagnetic block 315 increases and the magnetic suction force exerted on the magnetic end block 318 increases, and the magnetic end block 318 squeezes the elastic pulling block 317 to move towards the fixing plate 311 end.

[0051] On one side of the adjustment frame 301 close to the fixed plate 311, a plurality of arc-shaped working blocks 313 are symmetrically arranged through hinge seats 314. An I-shaped hole 312 is formed inside the fixed plate 311. The inner wall of the I-shaped hole 312 is in sealed sliding connection with the outer surface of the arc-shaped working block 313. One end of the arc-shaped working block 313 away from the adjustment frame 301 is fixedly connected to the side wall of the magnetic end block 318. The arc-shaped working block 313 connects the adjustment frame 301 and the magnetic end block 318. At the same time, with the cooperation of the hinge seat 314, the tilt vibration of the adjustment frame 301 can be realized. The arc-shaped working block 313 is slidably connected between two elastic pull blocks 317. The forces received by the arc-shaped working block 313 in the up and down directions are the same, and the arc-shaped working block 313 can drive the adjustment frame 301 and the magnetic end block 318 to move synchronously and stably. The arc-shaped working block 313 matches the inner wall of the stirring cavity 102. Therefore, when the arc-shaped working block 313 drives the adjustment frame 301 to move on the inner wall of the stirring cavity 102, the moving position of the adjustment frame 301 is always at the inner wall end of the stirring cavity 102, further improving the accuracy of the movement adjustment of the adjustment frame 301.

[0052] Since the concentration of the grouting material is different at different heights inside the stirring cavity 102, the forces received by the grouting material inside the stirring cavity 102 during stirring are different, and the stirring efficiency is different, which will further affect the subsequent stirring quality and effect. And during the stirring process, some grouting materials are easily adhered to the inner wall of the stirring cavity 102, which will not only reduce the stirring quality but also cause pollution to the subsequent stirring of the grouting material. In the above process of using the adjustment frame 301 to cooperate with the stirring blades 212 to realize the common stirring of the grouting material, some grouting materials are easily blocked on the outer surface of the adjustment frame 301 and inside the filter holes 303. This grouting material will affect the stirring efficiency and quality, thus reducing the quality of the slurry.

[0053] To solve the above problems, when actually using the aquifer grouting equipment, first pour each grouting material into the stirring cavity 102 along the feed port 105. The specific grouting materials are cement and water, etc. Then the control panel 106 controls the driving motor 204 to start and drive the driving wheel 205 to rotate. The driving wheel 205 drives the driven wheel 206 to rotate through the transmission belt 207. The driven wheel 206 drives the main shaft 210 to rotate inside the bearing frame 214. The main shaft 210 drives a plurality of stirring blades 212 to rotate through the rotating wheel 211 at the bottom. The stirring blades 212 rotate inside the stirring cavity 102 to realize the stirring and mixing of the internal grouting material, thus realizing the stirring and mixing process and finally obtaining the required slurry.

[0054] Meanwhile, as the rotating wheel 211 drives the stirring blade 212 to continuously rotate, the stirring blade 212 drives the grouting material inside the stirring chamber 102 to rotate. The grouting material is thrown to the inner wall of the stirring chamber 102 under the action of centrifugal force and rotates along with it. When the grouting material collides with the side wall of the adjusting frame 301, the impact force between the two is used to collide and break the massive structure inside the grouting material. At the same time, a transverse cutting force is provided to the grouting material during this process, and together with the axial rotation force received by the grouting material inside the stirring chamber 102, the stirring and mixing effect is improved, avoiding problems such as the massive structure in the grouting material being stirred for a long time but unable to be broken and mixed.

[0055] Meanwhile, initially, the adjusting frame 301 is in a vertical state. Therefore, under the action of its own weight and the hanging of the suspension rope 309, the counterweight rod 310 does not exert a force on the inner wall of the trapezoidal hole 307. The moving plate 304 is in its initial position, there is a gap between the elastic scraping head 305 and the inner wall of the stirring chamber 102, and both the filtering hole 303 and the docking hole 306 are in their initial docking positions. When the grouting material is rotating continuously, the grouting material can pass through the adjusting frame 301 through the overlapping positions of multiple filtering holes 303 and docking holes 306, thereby realizing the filtering and stirring of the grouting material, improving the mixing efficiency of the grouting material, and ensuring the mixing effect of the grouting material.

[0056] In the initial situation, the electromagnetic block 315 is in its initial current state. Under the action of the magnetic attraction force exerted by the electromagnetic block 315 on the magnetic end block 318 and the elastic force of the elastic pulling block 317, the magnetic end block 318 is driven to be in its initial position. Under the action of the impact force exerted by the grouting material on the adjusting frame 301, the adjusting frame 301 exerts a force on the arc-shaped workpiece 313. The arc-shaped workpiece 313 correspondingly drives the magnetic end block 318 to exert a pulling force value on the elastic pulling block 317, and the pulling force value detected by the pulling force sensor 316 is at its initial value.

[0057] When the pulling force values detected by multiple pulling force sensors 316 at a certain position are all equal and greater than the set pulling force preset value, it indicates that the concentration of the grouting material at this position is too high. At this time, it is necessary to perform centralized and rapid impact crushing on it. Therefore, the control screen 106 controls the current of multiple electromagnetic blocks 315 to increase and the magnetism to increase. The magnetic attraction force of the electromagnetic block 315 on the magnetic end block 318 increases. The magnetic end block 318 squeezes the elastic pulling block 317 and moves towards the fixed plate 311 end. The magnetic end block 318 drives the arc-shaped workpiece 313 to move towards the fixed plate 311 end. The arc-shaped workpiece 313 drives the other end of the adjusting frame 301 to move away from the fixed plate 311 end. The adjusting frame 301 exerts a reverse thrust on the grouting material that has moved to the side wall end of the adjusting frame 301, further improving the impact crushing effect on the grouting material, correspondingly improving the stirring and mixing effect of the grouting material inside the stirring chamber 102, with stronger adaptability and higher stirring effect.

[0058] When the grouting material accumulates on one side (upper or lower) of the adjustment frame 301, or when the filter holes 303 on one side (upper or lower) of the adjustment frame 301 are blocked, as the grouting material in the stirring chamber 102 continuously rotates, the thrust on the adjustment frame 301 on this side increases, and the tensile force value detected by the tensile force sensor 316 at the corresponding position increases. For example, when the thrust on the upper side wall of the adjustment frame 301 from the grouting material increases or the filter holes 303 are blocked, the tensile force values detected by the multiple tensile force sensors 316 above the adjustment frame 301 increase. Then, the control screen 106 controls the reduction of the energizing current of the upper electromagnet 315. The magnetic suction force exerted by the electromagnet 315 on the magnetic end block 318 decreases. Under the elastic force of the elastic pull block 317, the magnetic end block 318 is driven to move away from the fixed plate 311 end. The magnetic end block 318 drives the arc-shaped working block 313 to move. The other end of the arc-shaped working block 313 drives the upper part of the adjustment frame 301 to move closer to the fixed plate 311 end through the hinge seat 314. The energizing current of the electromagnet 315 below the adjustment frame 301 remains unchanged, and the positions of the magnetic end block 318 and the arc-shaped working block 313 below the adjustment frame 301 do not change. The adjustment frame 301 tilts inside the stirring chamber 102, and the distance between the upper part of the adjustment frame 301 and the fixed plate 311 is less than the distance between the lower part of the adjustment frame 301 and the fixed plate 311. Under this tilting effect, the grouting material accumulated above the adjustment frame 301 slides upward under the stirring of the stirring blade 212 and finally detaches from the side wall of the adjustment frame 301, thus achieving the effect of rapid stirring and mixing of the grouting material and avoiding the accumulation of the grouting material on the side wall of the adjustment frame 301 and affecting the stirring effect.

[0059] At the same time, when the adjustment frame 301 tilts, under the vertical suspension action of the suspension rope 309 on the counterweight rod 310 and the self-weight action of the counterweight rod 310, the counterweight rod 310 is always in a vertical state. Then, the force exerted by the counterweight rod 310 on the inner wall of the trapezoidal hole 307 increases. Under the thrust of the counterweight rod 310, the moving plate 304 drives multiple return springs 308 to stretch along the sliding groove 302 and move away from the main shaft 210 end. The moving plate 304 moves and drives multiple docking holes 306 to move. The overlapping area between the docking holes 306 and the filter holes 303 increases, and the content of the grouting material passing through the filter holes 303 and the docking holes 306 and passing through the adjustment frame 301 increases, further achieving the effect of clearing the blockage of the filter holes 303 and ensuring that the grouting material can be stably and continuously stirred and mixed.

[0060] When the grouting material in the stirring chamber 102 is stirred and mixed to form slurry, the control screen 106 controls the opening of the control valve 104 and starts the liquid extraction pump. The slurry in the stirring chamber 102 is continuously discharged along the discharge pipe 103 under the stirring of the stirring blade 212 and the suction of the liquid extraction pump, and finally enters the stirring pool to wait for the subsequent grouting process.

[0061] Afterwards, since a large amount of slurry is likely to adhere to the inner wall of the stirring chamber 102, if it cannot be quickly removed, it will affect the mixing and stirring of subsequent grouting materials. After the slurry inside the stirring chamber 102 is discharged, the control panel 106 controls the energizing current of multiple electromagnetic blocks 315 to increase. Then, the magnetic suction force exerted by the electromagnetic blocks 315 on the magnetic end blocks 318 increases and drives the magnetic end blocks 318 to move towards the fixed plate 311 end. The magnetic end blocks 318 drive the arc-shaped working blocks 313 to squeeze the elastic pulling blocks 317 to move. The arc-shaped working blocks 313 drive the adjusting frame 301 to move away from the fixed plate 311 end. At this time, if the initial moving distance of the upper arc-shaped working block 313 is greater than that of the lower arc-shaped working block 313, the adjusting frame 301 is driven to be in an inclined state under the hinge action of the hinge seat 314, and the distance between the upper part of the adjusting frame 301 and the fixed plate 311 is greater than the distance between the lower part of the adjusting frame 301 and the fixed plate 311, further improving the cleaning effect on the inner wall of the stirring chamber 102.

[0062] At the same time, since the adjusting frame 301 is in an inclined state, it is in a vertical state under the gravity of the counterweight rod 310 and the hanging action of the suspension rope 309. The extrusion force exerted by the counterweight rod 310 on the trapezoidal hole 307 increases. The counterweight rod 310 drives the moving plate 304 to move along the sliding groove 302 away from the main shaft 210 end. The moving plate 304 drives the elastic scraping head 305 at the end to be in mutual extrusion contact with the inner wall of the stirring chamber 102. Then, the adjusting frame 301 continuously reciprocates at the inner wall end of the stirring chamber 102, and the inner wall of the stirring chamber 102 is scraped and cleaned by means of the elastic scraping head 305, improving the cleanliness of the inner wall of the stirring chamber 102 and avoiding affecting the mixing and stirring of subsequent grouting materials.

[0063] When the adhesion of the grouting material on the inner wall of the stirring chamber 102 is too large, the adjusting frame 301 collides with the grouting material by extrusion. At this time, the pulling force value detected by the tension sensor 316 increases. The control panel 106 controls the extrusion force applied by the upper electromagnetic block 315 at the corresponding position to continue to increase. Then, the magnetic suction force of the electromagnetic block 315 on the magnetic end block 318 increases and drives the magnetic end block 318 to move towards the fixed plate 311 end. The magnetic end block 318 drives the arc-shaped working block 313 to move. The arc-shaped working block 313 drives the adjusting frame 301 to increase the inclination angle through the hinge seat 314. The thrust exerted by the counterweight rod 310 on the side wall of the trapezoidal hole 307 increases, and the moving distance of the moving plate 304 along the sliding groove 302 away from the main shaft 210 end increases. The moving plate 304 drives the elastic scraping head 305 to increase the scraping force on the grouting material, further improving the scraping and cleaning effect on the inner wall of the stirring chamber 102, with stronger adaptability and higher cleaning effect.

[0064] When the adjustment frame 301 moves to the maximum distance, the energized current of the electromagnetic block 315 gradually decreases, and the adjustment frame 301 continuously moves in the reverse direction for scraping. At this time, the energized current of the upper electromagnetic block 315 is less than that of the lower electromagnetic block 315. Then, the distance value between the upper part of the adjustment frame 301 and the fixed plate 311 is less than the distance value between the lower part of the adjustment frame 301 and the fixed plate 311. The adjustment frame 301 moves in the reverse direction to scrape and clean the inner wall of the stirring cavity 102. When the energized current of the electromagnetic block 315 decreases to zero, under the elastic force of the elastic pull block 317, the magnetic end block 318 moves in the reverse direction to the maximum distance. The magnetic end block 318 drives the arc-shaped working block 313 to move in the reverse direction to the maximum distance. The arc-shaped working block 313 drives the adjustment frame 301 to move in the reverse direction and collide with the side wall of the fixed plate 311. Under the action of this collision force, the vibration cleaning of the grouting material attached to the outer surface of the adjustment frame 301 is realized, improving the cleaning effect on the adjustment frame 301.

[0065] Meanwhile, during the vibration process of the adjustment frame 301, the counterweight rod 310 continuously swings back and forth in the trapezoidal hole 307 under the action of inertia. The thrust exerted by the counterweight rod 310 on the side wall of the trapezoidal hole 307 constantly changes. Then, the counterweight rod 310 drives the moving plate 304 and cooperates with the return spring 308 to continuously move back and forth in the sliding groove 302. The moving plate 304 drives the elastic scraper 305 to continuously move. The elastic scraper 305 constantly collides with the inner wall of the stirring cavity 102, further improving the vibration cleaning effect on the grouting material on the outer surfaces of the elastic scraper 305 and the moving plate 304. Meanwhile, during the movement of the moving plate 304, the docking hole 306 is continuously driven to move. The overlapping area between the docking hole 306 and the filtering hole 303 constantly changes. Then, the grouting material and the like blocked inside the filtering hole 303 are separated during the continuous change of the overlapping area, thereby effectively realizing the self-cleaning process. Continuously repeating the above process, the cleaning effect on the inner wall of the stirring cavity 102 and the adjustment frame 301 itself is realized, with stronger adaptability and better self-cleaning effect.

[0066] The grouting material scraped from the inner wall of the stirring cavity 102 falls to the inner bottom of the stirring cavity 102, and clear water is introduced along the inside of the feed port 105. The discharge pipe 103 is connected to the impurity pool, thereby realizing the cleaning and discharge of the grouting material. After the cleaning is completed, new grouting material is continuously poured along the feed port 105, and the above process is repeated to realize the process of stirring and mixing the subsequent grouting material to form the required slurry.

[0067] The device has high stirring efficiency for grouting materials, good stirring effect, meets the actual slurry production requirements, has high stability, strong self - adaptability, and simple operation. It can meet the stirring requirements for different grouting materials and the needs of mass production. At the same time, during the stirring process of grouting materials, it can also drain and dredge the accumulation or blockage of grouting materials, ensuring stable and efficient mixing of grouting materials and avoiding affecting the quality of subsequent slurry. After the stirring is completed, by means of the reciprocating tilting movement of the adjustment frame 301, it can also scrape and clean the grouting materials attached to the inner wall of the stirring chamber 102. At the same time, it can self - adaptively adjust the scraping force to ensure the cleaning quality. After the scraping is completed, under the action of the collision force between the adjustment frame 301 and the fixed plate 311, the self - cleaning process of the adjustment frame 301 and the moving plate 304 is realized, meeting the cleaning requirements and improving the recovery efficiency.

[0068] The grouting method of the aquifer grouting equipment as described above includes the following steps:

[0069] S1. The main shaft 210 rotates and stirs and mixes the grouting materials inside the stirring chamber 102, and the grouting materials collide with the side wall of the adjustment frame 301.

[0070] S2. When the grouting materials accumulate on one side of the adjustment frame 301 or the filter holes 303 are blocked, the tensile force value detected by the corresponding position tensile force sensor 316 increases. The magnetic end block 318 drives the arc - shaped workpiece 313 to move away from the fixed plate 311 end, the adjustment frame 301 tilts, the extrusion force exerted by the counterweight rod 310 on the side wall of the trapezoidal hole 307 increases, and the moving plate 304 moves along the sliding groove 302 away from the main shaft 210 end.

[0071] S3. After the stirring and mixing of the grouting materials are completed, the arc - shaped workpiece 313 drives the adjustment frame 301 to tilt and move. When the tensile force value detected by a certain side tensile force sensor 316 increases, the tilting angle of the adjustment frame 301 driven by the arc - shaped workpiece 313 increases, the extrusion force exerted by the counterweight rod 310 on the side wall of the trapezoidal hole 307 increases, and the sliding distance of the moving plate 304 along the sliding groove 302 increases.

[0072] S4. When the electromagnet 315 is powered off, the adjustment frame 301 collides with the fixed plate 311, the extrusion force exerted by the counterweight rod 310 on the trapezoidal hole 307 changes continuously, and the moving plate 304 moves back and forth continuously inside the sliding groove 302.

[0073] By further defining the grouting method, the grouting quality is improved and the grouting efficiency is ensured.

[0074] The application of the aquifer grouting equipment as described above in coal mine mining.

[0075] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0076] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-bearing layer grouting equipment, comprising a shell assembly (1), a stirring assembly (2) being provided on the top of the shell assembly (1), and a plurality of adjustment assemblies (3) being evenly provided on the inner wall of the shell assembly (1), characterized in that: The shell assembly (1) comprises a shell (101), and a stirring chamber (102) is provided on the top of the shell (101); The stirring assembly (2) comprises a top frame (201), the center of the top frame (201) being rotatably connected to a main shaft (210); The adjustment assembly (3) comprises a plurality of adjustment frames (301), wherein a plurality of filter holes (303) are evenly arranged inside the adjustment frames (301), a sliding groove (302) is provided at the inner wall end of the adjustment frames (301) close to the stirring chamber (102), a movable plate (304) is sealed and slidably connected inside the sliding groove (302), a plurality of fixed plates (311) are evenly arranged on the inner wall of the stirring chamber (102), two electromagnetic blocks (315) are symmetrically arranged on one side of the fixed plate (311) away from the adjustment frame (301), an elastic pulling block (317) is arranged at the other end of each electromagnetic block (315) via a tension sensor (316), and a magnetic end block (318) is arranged at the other end of each elastic pulling block (317), and a plurality of arc-shaped working blocks (313) are symmetrically arranged on one side of the adjustment frame (301) close to the fixed plate (311) via a hinge seat (314).

2. The aquifer grouting equipment according to claim 1, characterized in that: A discharge pipe (103) is connected to one side of the outer shell (101); a liquid inlet end of the discharge pipe (103) passes through the outer shell (101) and is connected to the inner bottom of the stirring chamber (102); a liquid outlet end of the discharge pipe (103) is connected to a control valve (104); an output end of the control valve (104) is connected to an input end of a grouting pump; a plurality of feed ports (105) are formed between the top frame (201) and the top of the stirring chamber (102); a control panel (106) is provided on one side of the outer shell (101); and the control panel (106) electrically controls various electrical components.

3. The aquifer grouting equipment according to claim 1, characterized in that: The bottom of the top frame (201) is fixedly connected to the top of the housing (101); a mounting plate (202) is provided on the top of one side of the top frame (201); a driving motor (204) is provided on the top of the mounting plate (202); a supporting frame (203) is provided on the side wall of the mounting plate (202); the side wall of the supporting frame (203) is fixedly connected to the side wall of the driving motor (204); a driving wheel (205) is provided at the output end of the driving motor (204); a driven wheel (206) is provided on the top outer surface of the main shaft (210); a plurality of driving belts (207) are evenly connected to the side walls of the driving wheel (205) and the driven wheel (206); and protective covers (208) are provided on the outer surfaces of the driving wheel (205) and the driven wheel (206).

4. The aquifer grouting equipment according to claim 1, characterized in that: A connecting frame (209) is provided at the center of the top of the top frame (201), and a middle hole (213) is provided at the center of both the top frame (201) and the connecting frame (209). A bearing frame (214) is provided on the side wall of the connecting frame (209) and inside the middle hole (213). The inner wall of the bearing frame (214) is rotatably connected to the outer surface of the main shaft (210). A rotating wheel (211) is provided at the bottom of the main shaft (210), and a plurality of stirring blades (212) are evenly provided on the outer surface of the rotating wheel (211). The stirring blades (212) are arranged obliquely and rotate in a direction from the end of the adjustment frame (301) to the end of the fixed plate (311).

5. The aquifer grouting equipment according to claim 1, characterized in that: The plurality of adjustment frames (301) are evenly distributed on the inner wall end of the stirring chamber (102); the interior of the movable plate (304) is evenly provided with a plurality of docking holes (306); the filtering holes (303) match the docking holes (306); the side wall of the movable plate (304) is evenly provided with a plurality of return springs (308); the other end of the return spring (308) is fixedly connected to the inner wall of the sliding groove (302).

6. The aquifer grouting equipment according to claim 1, characterized in that: An elastic scraper (305) is provided at one end of the movable plate (304) away from the main shaft (210), and the elastic scraper (305) matches the inner wall of the stirring chamber (102). A trapezoidal hole (307) is provided at one end of the movable plate (304) close to the main shaft (210), and the trapezoidal hole (307) is an isosceles trapezoidal structure. A hanging rope (309) is provided at the inner top of the sliding groove (302), and a counterweight rod (310) is provided at the bottom of the hanging rope (309), and the outer surface of the counterweight rod (310) matches the inner wall of the trapezoidal hole (307).

7. The aquifer grouting equipment according to claim 1, characterized in that: An I-shaped hole (312) is provided inside the fixed plate (311); the inner wall of the I-shaped hole (312) is sealingly and slidably connected to the outer surface of the arc-shaped work block (313); the arc-shaped work block (313) is slidably connected between two elastic pull blocks (317); one end of the arc-shaped work block (313) away from the adjustment frame (301) is fixedly connected to the side wall of the magnetic end block (318); the tension sensor (316) is used to detect the tension value of the elastic pull block (317); the end surfaces of the electromagnetic block (315) and the magnetic end block (318) facing each other have different magnetic properties; and the arc-shaped work block (313) matches the inner wall of the stirring chamber (102).

8. The grouting method of the aquifer grouting equipment according to claim 6 comprises the following steps, characterized in that: S1, the main shaft (210) rotates to stir and mix the grouting material inside the stirring chamber (102), and the grouting material collides with the side wall of the adjustment frame (301); S2, when the grouting material accumulates on one side of the adjustment frame (301) or the filter hole (303) is blocked, the tension value detected by the tension sensor (316) at the corresponding position increases, the magnetic end block (318) drives the arc-shaped work block (313) to move away from the fixed plate (311), the adjustment frame (301) tilts, the extrusion force applied by the counterweight rod (310) to the side wall of the trapezoidal hole (307) increases, and the movable plate (304) moves along the sliding groove (302) to the end away from the main shaft (210); S3, after the grouting material is stirred and mixed, the arc-shaped work block (313) drives the adjustment frame (301) to move in an inclined manner, and when the tension value detected by the tension sensor (316) on a certain side increases, the arc-shaped work block (313) drives the adjustment frame (301) to increase its inclination angle, the extrusion force applied by the counterweight rod (310) to the side wall of the trapezoidal hole (307) increases, and the sliding distance of the movable plate (304) along the sliding groove (302) increases; S4. When the electromagnetic block (315) is powered off, the adjustment frame (301) collides with the fixed plate (311), the extrusion force applied by the counterweight rod (310) to the trapezoidal hole (307) continuously changes, and the movable plate (304) continuously moves back and forth inside the sliding groove (302).

9. Application of the aquifer grouting equipment as claimed in claim 1 in coal mining.

Images