A device for coal mining is provided

Abstract

The application provides a separation layer grouting device for coal mining, and relates to the technical field of separation layer filling.The application comprises a support frame, the support frame is fixedly connected with a mixing pool, the support frame is fixedly connected with a control terminal, the support frame is fixedly connected with mirror-distributed screening drums, the screening drums are fixedly connected with filter plates, the screening drums are fixedly connected and communicated with butt-joint pipes, the butt-joint pipes are provided with first electromagnetic valves which are electrically connected with the control terminal, the top of the screening drums is rotatably connected with rotary sealing covers, the rotary sealing covers are rotatably connected with adjacent gears through annular arrays of gear teeth, and the rotary sealing covers are fixedly connected with push plates.The two screening drums work alternately, the separation layer of overburden is filled without interruption, the coal gangue blocks which are not completely broken in the slurry are removed to the outside, the coal gangue blocks which are not completely broken in the slurry are prevented from damaging the grouting pump and blocking the drill rod, and the filling work of the separation layer of overburden is affected.

Description

Technical Field

[0001] This invention relates to the field of delamination filling technology, and more specifically to a delamination grouting device for coal mining. Background Technology

[0002] Grouting for overburden separation typically involves crushing coal gangue, a byproduct of coal mining, into powder, which is then mixed with water to form a slurry. This slurry is then pumped through pipes and boreholes into the overburden separation zone via surface drilling. Within this zone, the slurry settles and compacts, supporting the overlying rock strata and controlling further subsidence of the rock mass above the separation zone, thus reducing surface subsidence. However, incomplete crushing of coal gangue is common during the crushing process. This results in the slurry containing not only soft lumps formed by the combination of water and coal gangue powder, but also hard, uncrushed coal gangue chunks. Because coal gangue blocks are harder than the lumps formed by coal gangue powder and water, when the grouting pump is transporting grout, the coal gangue blocks can collide with and damage the internal parts of the grouting pump, and may even block the drill rod from injecting grout, affecting the grouting and filling work of the overburden separation layer. Summary of the Invention

[0003] This invention provides a delamination grouting device for coal mining to overcome the problem that unbroken coal gangue blocks in the grout can easily damage the internal parts of the grouting pump and even clog the drill rod.

[0004] The technical solution of the present invention is as follows:

[0005] A delamination grouting device for coal mining includes a support frame, a mixing tank fixedly connected to the support frame, a control terminal fixedly connected to the support frame, and mirror-distributed screening cylinders fixedly connected to the support frame. Three-way valves electrically connected to the control terminal are fixedly connected and communicated between the top of the mirror-distributed screening cylinders and the mixing tank, and between the bottom of the mirror-distributed screening cylinders. A filling pipe is fixedly connected to the three-way valve located at the bottom of the mirror-distributed screening cylinders. A grouting pump electrically connected to the control terminal is installed on the filling pipe. A filter plate is fixedly connected inside the screening cylinders. A connecting pipe is fixedly connected to the screening cylinders, and the connecting pipe is equipped with... The system includes a first solenoid valve electrically connected to a control terminal, a first servo motor fixedly mounted on a support frame, the first servo motor electrically connected to the control terminal, a gear fixedly mounted on the output shaft of the first servo motor, a rotating cover rotatably connected to the top of the screening cylinder, a rotating cover fixedly mounted with an annular array of teeth, the rotating cover being connected to the adjacent gear via the annular array of teeth, a push plate fixedly mounted on the rotating cover engaging with the adjacent screening cylinder, mirror-distributed connecting pipes jointly fixedly mounted and connected to a storage cylinder, and a sealing assembly for sealing adjacent filter plates inside the screening cylinder.

[0006] Preferably, the filter plate has a frustum-shaped outline, and the end with the smaller diameter of the filter plate is the upper end.

[0007] Preferably, the sealing assembly includes a first electric push rod, which is fixedly connected to the support frame and electrically connected to a control terminal. A sealing cover is fixedly connected to the telescopic end of the first electric push rod. The sealing cover is slidably connected to the adjacent screening cylinder. A uniformly distributed sealing shaft is fixedly connected to the side of the sealing cover away from the adjacent first electric push rod. The uniformly distributed sealing shafts are all engaged with the adjacent filter plates for sealing. A water injection assembly for carrying stones is provided inside the screening cylinder.

[0008] Preferably, the water injection assembly includes a water inlet shell, which is rotatably and sealed to the rotating cover. The rotating cover is rotatably connected to a water pipe, which communicates with the water inlet shell. A matching pipe is fixedly connected to the top of the filter plate. The matching pipe is rotatably and sealed to the water pipe and communicates with it. An annular array of holes is left between the matching pipe and the filter plate.

[0009] Preferably, the top of the filter plate is provided with a cylindrical groove, and the annular array of pores between the mating tube and the filter plate is located within the cylindrical groove of the filter plate.

[0010] Preferably, the device further includes a crushing assembly for crushing stones, the crushing assembly being disposed inside the storage cylinder. The crushing assembly includes a second electric push rod electrically connected to a control terminal, the second electric push rod being fixedly connected to the outside of the storage cylinder, a push frame being rotatably connected to the telescopic end of the second electric push rod, a rotating ring being rotatably and sealingly connected to the top of the storage cylinder, the push frame being slidably and sealingly connected to the rotating ring, a ring array of crushed blocks being fixedly connected to the push frame, the ring array of crushed blocks being located inside the storage cylinder, a docking seat being fixedly connected inside the storage cylinder, all of the ring array of crushed blocks being in contact with the docking seat, a connecting pipe being fixedly connected to and connected to the bottom of the storage cylinder, a second solenoid valve electrically connected to the control terminal being disposed inside the connecting pipe, the connecting pipe being connected to the filling pipe, and an agitation assembly for accelerating the dissolution of stones being disposed inside the storage cylinder.

[0011] Preferably, the agitation assembly includes a second servo motor electrically connected to a control terminal. The second servo motor is fixed to the top of the storage cylinder. The output shaft of the second servo motor is fixed to a rotating shaft. The rotating shaft is fixed to an annular array of agitating plates. The annular array of agitating plates and the annular array of broken pieces are alternately distributed. The annular array of agitating plates is slidably connected to adjacent broken pieces.

[0012] Preferably, it further includes a mirror-distributed dissolving component for dissolving agglomerates. The dissolving component is disposed inside an adjacent screening cylinder. The dissolving component includes a third servo motor, which is fixedly connected to the top of the adjacent screening cylinder. The third servo motor is electrically connected to a control terminal. The output shaft of the third servo motor is fixedly connected to an adjacent water pipe. A scraper is fixedly connected to the water pipe. The scraper contacts and cooperates with an adjacent filter plate. A rapid dissolving component is disposed inside the scraper to increase the agglomerate dissolving area.

[0013] Preferably, the quick-dissolving component includes an annular array of extrusion blocks, each of which is fixedly connected to an adjacent mating tube. A sliding shaft is slidably connected inside the scraper, and a linear array of scraping blocks is fixedly connected to the sliding shaft. Each of the linear array of scraping blocks is slidably connected to an adjacent scraper. Each of the annular array of extrusion blocks is extruded into the adjacent sliding shaft. An elastic element is provided between the scraper and the adjacent sliding shaft.

[0014] Preferably, the extrusion block is a right-angled triangular plate, the right-angled side of the extrusion block is in contact with the mating tube, and the hypotenuse of the extrusion block faces downward.

[0015] Beneficial technical effects of the present invention:

[0016] 1. This invention uses two screening cylinders to work alternately and continuously fill the overburden separation layer, removing incompletely broken coal gangue pieces from the slurry to the outside, thus avoiding damage to the grouting pump and blockage of the drill rod by incompletely broken coal gangue pieces in the slurry, which would affect the filling of the overburden separation layer.

[0017] 2. This invention involves crushing the removed coal gangue blocks and then dissolving them in water to form a slurry. This slurry is then fed into the drill pipe through the filling pipe to fill the overburden separation layer, thus avoiding the waste caused by the direct discharge of coal gangue blocks and reducing the utilization rate of materials.

[0018] 3. The present invention crushes the coal gangue clumps attached to the filter plate by scraping, so that they are evenly attached to the filter plate and come into contact with the water flow, and dissolve into the water, thus avoiding the coal gangue clumps from blocking the filter plate and reducing the flow rate of the filter plate.

[0019] 4. This invention disperses the crushed coal gangue clumps to the upper and lower sides of the filter plate by making the scraping blocks of the linear array reciprocate in a linear manner, thereby further increasing the contact area between the crushed coal gangue clumps and water and improving the dissolution rate of the coal gangue clumps. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional cross-sectional view of the screening cylinder of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the screening cylinder and storage cylinder of the present invention;

[0023] Figure 4 This is a three-dimensional cross-sectional view of the filter plate of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the water inlet shell and water pipe of the present invention;

[0025] Figure 6 This is a three-dimensional cross-sectional view of the storage cylinder of the present invention;

[0026] Figure 7 This is a three-dimensional structural diagram of the fragmentation block of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the third servo motor and scraper of the present invention;

[0028] Figure 9 This is a three-dimensional cross-sectional view of the scraper of the present invention;

[0029] Figure label:

[0030] 1. Support frame, 2. Mixing tank, 3. Screening cylinder, 4. Three-way valve, 5. Filling pipe, 6. Grouting pump, 7. Filter plate, 8. Connecting pipe, 9. First servo motor, 10. Gear, 11. Rotating cover, 12. Push plate, 13. Storage cylinder, 201. First electric push rod, 202. Sealing cover, 203. Sealing shaft, 301. Water inlet shell, 302. Water pipe, 303. Matching pipe, 401. Second electric push rod, 402. Pushing frame, 403. Rotating ring, 404. Crushing block, 405. Connecting seat, 406. Connecting pipe, 501. Second servo motor, 502. Rotating shaft, 503. Stirring plate, 601. Third servo motor, 602. Scraper, 603. Extrusion block, 604. Sliding shaft, 605. Scraping block, 606. Elastic element. Detailed Implementation

[0031] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. Certain embodiments of the invention will be described more fully below with reference to the accompanying drawings, and some, but not all, of these embodiments will be shown. In fact, various embodiments of the invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to enable the invention to meet applicable legal requirements.

[0032] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," "lower," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] The slurry formed by mixing coal gangue powder and water contains uncrushed coal gangue pieces. These pieces are harder than the lumps formed by the combination of coal gangue powder and water. When the grouting pump transports the slurry, these coal gangue pieces can collide with and damage the internal parts of the pump, and may even block the drill rod from injecting slurry, affecting the grouting and filling work of the overburden separation layer.

[0034] Example 1:

[0035] A delamination grouting device for coal mining, such as Figures 1-3As shown, the system includes a support frame 1, a mixing tank 2 fixedly connected to the rear side of the support frame 1, the mixing tank 2 being used to mix coal gangue powder and water to form a slurry, a control terminal fixedly connected to the left side of the support frame 1, and two mirror-distributed screening cylinders 3 fixedly connected to the front side of the support frame 1. Three-way valves 4 are fixedly connected and connected between the top of the two mirror-distributed screening cylinders 3 and the mixing tank 2, and between the bottom of the two mirror-distributed screening cylinders 3. The three-way valves 4 are electrically connected to the control terminal and are used for alternating use of the two mirror-distributed screening cylinders 3. The three-way valves 4 located at the bottom of the two mirror-distributed screening cylinders 3 are fixedly connected and connected to... A filling pipe 5 is provided, and a grouting pump 6 is installed on the filling pipe 5. The grouting pump 6 is used to transport grout and is electrically connected to a control terminal. Filter plates 7 are fixedly connected to the middle of the two mirror-distributed screening cylinders 3. The filter plates 7 are used to screen out incompletely crushed coal gangue pieces in the grout. The profile of the filter plate 7 is frustum-shaped, and the end with the smaller diameter of the filter plate 7 is the upper end, so that the coal gangue pieces on the filter plate 7 roll downward under the action of gravity. The opposite sides of the two mirror-distributed screening cylinders 3 are fixedly connected and connected to a connecting pipe 8. The two mirror-distributed connecting pipes 8 are each equipped with a first electromagnetic valve that is electrically connected to the control terminal. The valve and support frame 1 are fixedly connected to two mirror-distributed first servo motors 9. The first servo motors 9 are electrically connected to the control terminal. The output shaft of the first servo motor 9 is fixedly connected to a gear 10. The top of the screening cylinder 3 is rotatably sealed with a rotating cover 11. The outside of the rotating cover 11 is fixedly connected with an annular array of teeth. The rotating cover 11 is driven by the annular array of teeth to the adjacent gear 10. The rotating cover 11 is fixedly connected to a push plate 12 that contacts and engages with the adjacent screening cylinder 3. The first servo motors 9 drive the push plate 12 to rotate through the gear 10 and the rotating cover 11. The rotation of the push plate 12 drives the coal... The gangue blocks move towards the adjacent connecting pipe 8. The two mirror-distributed connecting pipes 8 are fixed together and connected to the storage cylinder 13, so that the water flow in the screening cylinder 3 carries the gangue blocks through the connecting pipes 8 into the storage cylinder 13. In this invention, the two screening cylinders 3 work alternately. When continuously filling the overburden separation layer, the gangue blocks that are not completely broken in the slurry are removed to the outside, so as to avoid the gangue blocks that are not completely broken in the slurry damaging the grouting pump and clogging the drill rod, thus affecting the filling work of the overburden separation layer. The two mirror-distributed screening cylinders 3 are each equipped with a sealing component for sealing the adjacent filter plates 7.

[0036] like Figure 2 and Figure 4As shown, the sealing assembly includes a first electric push rod 201, which is fixedly connected to the lower part of the support frame 1. The first electric push rod 201 is electrically connected to the control terminal. A sealing cover 202 is fixedly connected to the telescopic end of the first electric push rod 201. The sealing cover 202 is always located below the three-way valve 4 at the bottom of the two mirror-distributed screening cylinders 3. The sealing cover 202 is slidably connected to the adjacent screening cylinder 3. The first electric push rod 201 drives the sealing cover 202 to move upward or downward along the screening cylinder 3. The upper side of the sliding sealing cover 202 is fixed with evenly distributed sealing shafts 203. The top of the evenly distributed sealing shafts 203 forms a frustum shape. The evenly distributed sealing shafts 203 are all sealed and cooperate with the adjacent filter plates 7. The sealing cover 202 drives the sealing shafts 203 to slide upward to seal the adjacent filter plates 7, and slide downward to release the seal on the adjacent filter plates 7, so that the filter plates 7 are closed frustum shapes. The two mirror-distributed screening cylinders 3 are each equipped with water injection components for carrying stones.

[0037] like Figure 2 and Figure 5 As shown, the water injection assembly includes a water inlet shell 301, which is connected to an external water injection device. The water inlet shell 301 is rotatably and sealed to the upper side of the rotating cover 11. A water pipe 302 is rotatably connected to the central axis of the rotating cover 11, and the water pipe 302 is connected to the adjacent water inlet shell 301. A matching pipe 303 is fixedly connected to the top of the filter plate 7. The matching pipe 303 and the water pipe 302 are rotatably and sealed to each other and are interconnected. Water enters the water pipe 302 along the water inlet shell 301. 02. Then, the water enters the connecting pipe 303. There is an annular array of holes between the connecting pipe 303 and the filter plate 7. The top of the filter plate 7 is provided with a columnar groove. The annular array of holes is used to allow water in the connecting pipe 303 to enter the columnar groove at the top of the filter plate 7. The annular array of holes between the connecting pipe 303 and the filter plate 7 is located in the columnar groove of the filter plate 7, so that the water flow gradually fills the columnar groove at the top of the filter plate 7 and flows evenly downwards to impact the coal gangue blocks and make them roll downwards.

[0038] When grouting is required into the overburden abscission layer, the workers connect the filling pipe 5 to the drill rod. Then, the workers put the crushed coal gangue into the mixing tank 2 and mix it with water to form a slurry. After the slurry is prepared, the workers open two three-way valves 4 through the control terminal, allowing the slurry in the mixing tank 2 to enter the screening cylinder 3 on the left through the upper three-way valve 4. After entering the screening cylinder 3, the slurry passes through the filter plate 7 to block any incompletely crushed coal gangue pieces. Then, the slurry enters the lower three-way valve 4 from the left screening cylinder 3 and then enters the filling pipe 5 through the lower three-way valve 4. At this time, the grouting pump 6 is turned on, and the grouting pump 6 delivers the slurry in the filling pipe 5 to the drill rod, and then the drill rod delivers it to the overburden abscission layer to support the soil layer. This process continues until the filling of the overburden abscission layer is completed.

[0039] Two hours after the slurry flows through the left screening cylinder 3 and fills the overburden separation layer, the control terminal controls the upper three-way valve 4 to allow the slurry in the mixing tank 2 to enter the right screening cylinder 3. At this time, the left screening cylinder 3 is still filled with slurry. When the slurry in the left screening cylinder 3 completely enters the filling pipe 5 through the lower three-way valve 4, the left screening cylinder 3 is emptied. Then, the control terminal controls the lower three-way valve 4 to cut off the connection with the left screening cylinder 3 and open the connection with the right screening cylinder 3. At this time, the slurry flows through the right screening cylinder. 3. Fill the overburden separation layer. The coal gangue blocks blocked by the filter plate 7 in the left screening cylinder 3 are attached to the filter plate 7. At this time, the first electric push rod 201 on the left is opened. The extension end of the first electric push rod 201 drives the sealing cover 202 on it to slide upward along the left screening cylinder 3. The sealing cover 202 drives the evenly distributed sealing shafts 203 on it to move synchronously. This continues until the evenly distributed sealing shafts 203 block the through holes on the adjacent filter plates 7 together, so that the evenly distributed sealing shafts 203 and the filter plates 7 cooperate to form a closed frustum shape.

[0040] After the left filter plate 7 is sealed, the external water injection device is turned on to slowly inject water into the left water inlet shell 301. At this time, the water in the water inlet shell 301 enters the adjacent connecting pipe 303 through the adjacent water pipe 302, and then enters the cylindrical groove of the filter plate 7 through the connecting pipe 303. As the water gradually fills the cylindrical groove of the filter plate 7, the water will flow outward evenly along the circumference of the cylindrical groove of the filter plate 7. The water flow flows from the top to the bottom of the filter plate 7, and at the same time, it impacts the coal gangue pieces attached to the filter plate 7 to the connection between the filter plate 7 and the screening cylinder 3. The coal and gangue blocks roll onto the screening cylinder 3. At this time, the first servo motor 9 on the left and the first solenoid valve in the left connecting pipe 8 are opened. The output shaft of the first servo motor 9 drives the rotating cover 11 to rotate through the gear 10 on it. The rotating cover 11 rotates and drives the push plate 12 inside it to rotate. The push plate 12 rotates and pushes the coal and gangue blocks in the screening cylinder 3 to move synchronously until the coal and gangue blocks move to the left connecting pipe 8, so that the water flow carries the coal and gangue blocks into the storage cylinder 13. This continues until all the coal and gangue blocks in the left screening cylinder 3 enter the storage cylinder 13.

[0041] All the coal gangue blocks in the left screening cylinder 3 enter the storage cylinder 13. Then, the water injection device on the left, the first servo motor 9 on the left, and the first solenoid valve in the left connecting pipe 8 are closed. The first electric push rod 201 on the left is opened, causing the first electric push rod 201 to drive the sealing cover 202 downward. This causes the sealing cover 202 to drive the evenly distributed sealing shafts 203 on it to release the blockage of the adjacent filter plates 7. After the right screening cylinder 3 has been working for two hours, the three-way valve 4 is opened again and the above steps are repeated. This continues until the filling of the overburden separation layer is completed. By having the two screening cylinders 3 work alternately without interrupting the filling of the overburden separation layer, the coal gangue blocks that are not completely broken in the slurry are removed to the outside. This prevents the coal gangue blocks that are not completely broken in the slurry from damaging the grouting pump 6 and clogging the drill rod, which would affect the filling of the overburden separation layer.

[0042] Example 2:

[0043] Based on Example 1, such as Figure 6 and Figure 7 As shown, it also includes a crushing assembly for crushing stones. The crushing assembly is disposed inside the storage cylinder 13. The crushing assembly includes a second electric push rod 401 electrically connected to a control terminal. The second electric push rod 401 is fixed to the front side of the outside of the storage cylinder 13. The telescopic end of the second electric push rod 401 is rotatably connected to a push frame 402. The top of the storage cylinder 13 is rotatably and sealingly connected to a rotating ring 403. The push frame 402 and the rotating ring 403 are slidably and sealingly connected. Four crushing blocks 404 in a ring array are fixedly connected to the bottom of the push frame 402. The four crushing blocks 404 form a stepped frustum. The four crushing blocks 404 in the ring array are located inside the storage cylinder 13. A docking seat 405 is fixedly connected inside the storage cylinder 13. The docking seat 405 is provided with a connection to the crushing blocks 404. The four crushed blocks 404 of the ring array are in contact with the docking seat 405. The second electric push rod 401 drives the four crushed blocks 404 to move downwards through the push frame 402 to contact the docking seat 405 and crush the coal gangue blocks between them. The bottom of the storage cylinder 13 is fixedly connected to and connected to the connecting pipe 406. The connecting pipe 406 is equipped with a second solenoid valve that is electrically connected to the control terminal. The connecting pipe 406 is connected to the filling pipe 5. After the coal gangue blocks in the storage cylinder 13 are crushed, they are dissolved in water again to form a slurry. The slurry enters the drill pipe along the connecting pipe 406 and the filling pipe 5 to fill the overburden separation layer, avoiding the direct discharge of coal gangue blocks and causing waste and reducing the utilization rate of materials. The storage cylinder 13 is equipped with a stirring component to accelerate the dissolution of the blocks.

[0044] like Figure 6 and Figure 7As shown, the agitation assembly includes a second servo motor 501 electrically connected to the control terminal. The second servo motor 501 is fixed to the top of the storage cylinder 13. The output shaft of the second servo motor 501 is fixed to a rotating shaft 502. The output shaft of the second servo motor 501 drives the rotating shaft 502 to alternately rotate forward and backward. The rotating shaft 502 is fixed to four agitator plates 503 in a ring array. The rotating shaft 502 drives the agitator plates 503 to agitate the water flow, accelerating the dissolution rate of the crushed coal gangue blocks with water. The four agitator plates 503 in the ring array and the four crushed blocks 404 in the ring array are alternately distributed. The four agitator plates 503 in the ring array are slidably connected to the adjacent crushed blocks 404. The agitator plates 503 push the adjacent crushed blocks 404 to rotate, further crushing the coal gangue blocks, increasing the degree of crushing of the coal gangue blocks, and increasing their contact area with water.

[0045] When the coal gangue and water flow from the screening cylinder 3 into the storage cylinder 13, the coal gangue falls onto the docking seat 405 in the storage cylinder 13. When the first solenoid valve in the docking pipe 8 is closed, the second electric push rod 401 is activated. The telescopic end of the second electric push rod 401 drives the push frame 402 downwards. The push frame 402 drives the four crushing blocks 404 in its annular array downwards synchronously. This continues until the four crushing blocks 404 in the annular array contact and crush the coal gangue on the docking seat 405 below. Then, the second electric push rod 401 is closed. While the telescopic end of the second electric push rod 401 drives the push frame 402 downwards, the second servo motor 501 is activated. The output shaft of the second servo motor 501 drives the rotating shaft 502 to rotate alternately in both directions. The rotation of the rotating shaft 502 drives the four agitator plates 503 in its annular array to rotate synchronously, stirring... Plate 503 drives the four crushing blocks 404 of the ring array to rotate synchronously, further crushing the coal gangue blocks and increasing the contact area between the coal gangue blocks and water. Then, the second electric push rod 401 is turned on to drive the four crushing blocks 404 of the ring array to reset to the initial state. At the same time, the stirring plate 503 rotates and stirs the water in the storage cylinder 13, accelerating the dissolution rate of water and coal gangue blocks. When the coal gangue blocks dissolve into the water to form a slurry, the second electric push rod 401 and the second servo motor 501 are closed, and the second solenoid valve inside the connecting pipe 406 is opened. At this time, the grouting pump 6 draws the slurry in the storage cylinder 13 into the filling pipe 5, and then enters the drill pipe along the filling pipe 5 to fill the overburden separation layer. After the slurry in the storage cylinder 13 is discharged, the second solenoid valve inside the connecting pipe 406 is closed, and the process waits for the next coal gangue blocks to enter the storage cylinder 13, and repeats the above steps.

[0046] Example 3:

[0047] Based on Example 2, such as Figure 5 and Figure 8As shown, it also includes two mirror-distributed dissolving components. The dissolving components are used to dissolve coal gangue clumps with water. The dissolving components are set inside adjacent screening cylinders 3. The dissolving components include a third servo motor 601, which is fixed to the top of the adjacent screening cylinder 3. The third servo motor 601 is electrically connected to the control terminal. The output shaft of the third servo motor 601 is fixed to the adjacent water pipe 302. The third servo motor 601 drives the scraper 602 to rotate through the water pipe 302. The scraper 602 is fixed to the water pipe 302. The scraper 602 contacts and cooperates with the adjacent filter plate 7, so that the scraper 602 rotates to crush the coal gangue clumps attached to the filter plate 7 and makes uniform contact with the water flow, and dissolves into the water, so as to avoid the coal gangue clumps blocking the filter plate and reducing the flow rate of the filter plate. The scraper 602 is provided with a fast dissolving component to increase the clump dissolution area.

[0048] like Figure 8 and Figure 9 As shown, the instant dissolving component includes an annular array of extrusion blocks 603. Each extrusion block 603 is a right-angled triangular plate, with its right-angled side fitting against the mating tube 303, and its hypotenuse facing downwards. The annular array of extrusion blocks 603 are all fixedly connected to the top of adjacent mating tubes 303. A sliding shaft 604 is slidably connected within a scraper 602. Seven scraping blocks 605 in a linear array are fixedly connected to the sliding shaft 604. Each of the seven scraping blocks 605 in the linear array is slidably connected to an adjacent scraper 602. The annular array of extrusion blocks 603 are all slidably connected to the top of the mating tube 303. Adjacent sliding shafts 604 are pressed together, and the inclined edge of the pressing block 603 presses the sliding shaft 604, causing the sliding shaft 604 to slide along the scraper 602. An elastic element 606, which is a spring, is provided between the scraper 602 and the adjacent sliding shaft 604 to drive the sliding shaft 604 to reset. By causing the linear array of scraper blocks 605 to perform linear reciprocating motion, the crushed coal gangue clumps are dispersed to the upper and lower sides of the filter plate 7, further increasing the contact area between the crushed coal gangue clumps and water, and improving the dissolution rate of the coal gangue clumps.

[0049] When coal gangue and water are mixed in the mixing tank 2, coal gangue powder will clump together. The clumps will enter the screening cylinder 3 with the slurry and be blocked by the filter plate 7 inside the screening cylinder 3. When the coal gangue clumps in the screening cylinder 3 are removed, the third servo motor 601 is turned on at the same time. The output shaft of the third servo motor 601 drives the water pipe 302 to rotate. The rotation of the water pipe 302 drives the scraper 602 to rotate synchronously, crushing the coal gangue clumps attached to the filter plate 7 and attaching them to the outside of the filter plate 7. When the water in the columnar groove at the top of the filter plate 7 flows evenly downward along the filter plate 7, it dissolves the crushed coal gangue clumps into the water flow and finally enters the storage cylinder 13.

[0050] When the scraper 602 rotates and crushes the coal gangue clumps, the scraper 602 drives the sliding shaft 604 to rotate synchronously. The sliding shaft 604 rotates and contacts the extrusion blocks 603 in the annular array. The extrusion blocks 603 extrude pressure on the sliding shaft 604, causing the sliding shaft 604 to slide along the scraper 602 under the extrusion pressure. At the same time, the elastic element 606 is compressed, and the sliding shaft 604 drives the seven scraping blocks 605 in the linear array to move synchronously. When the sliding shaft 604 separates from the extrusion blocks 603, the elastic element 606 resets and drives the sliding shaft 604 to reset. At the same time, the sliding shaft 604 drives the seven scraping blocks 605 in the linear array to reset and slide. The seven scraping blocks 605 in the linear array move back and forth in a straight line along the scraper 602, causing the scraping blocks 605 to disperse the crushed coal gangue clumps to the upper and lower sides of the filter plate 7, further increasing the contact area between the crushed coal gangue clumps and water, and improving the dissolution rate of the coal gangue clumps.

[0051] The present invention has been described in detail above with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the delamination grouting device for coal mining of the present invention. The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for coal mining for delamination grouting, characterized in that: The utility model provides a kind of screening device, including support frame, support frame is fixed with mixing pool, support frame is fixed with control terminal, support frame is fixed with mirror image distribution's screening cylinder, mirror image distribution's the top of the screening cylinder and the mixing pool between mirror image distribution's the bottom between the screening cylinder are fixed and communicate with the three-way valve electrically connected with control terminal, the three-way valve located in mirror image distribution's the bottom of the screening cylinder is fixed and communicates with filling pipe, the filling pipe is provided with grouting pump electrically connected with control terminal, the screening cylinder is fixed with filter plate, the screening cylinder is fixed and communicates with docking pipe, the docking pipe is provided with first solenoid valve electrically connected with control terminal on, support frame is fixed with mirror image distribution's first servo motor, first servo motor is electrically connected with control terminal, the output shaft of first servo motor is fixed with gear, the top of the screening cylinder is sealed rotationally connected with rotary cover, the rotary cover is fixed with annular array of teeth, the rotary cover is transmissionally connected with adjacent gear by annular array of teeth, the rotary cover is fixed with push plate and is contacted with adjacent screening cylinder, mirror image distribution's the docking pipe is collectively fixed and communicates with storage cylinder, and the screening cylinder is provided with blocking assembly for blocking adjacent filter plate.

2. The separation grouting device for coal mining according to claim 1, characterized in that: The filter plate is in the shape of circular truncated cone, and the small-diameter end of the filter plate is the upper end.

3. The separation grouting device for coal mining according to claim 1, characterized in that: The blocking assembly includes a first electric push rod, the first electric push rod is fixed to the support frame, the first electric push rod is electrically connected with the control terminal, the telescopic end of the first electric push rod is fixed with a sealing cover, the sealing cover is sealingly and slidably connected with the adjacent screening cylinder, the side of the sealing cover away from the adjacent first electric push rod is fixed with uniformly distributed blocking shafts, the uniformly distributed blocking shafts are sealingly connected with the adjacent filter plates, and the screening cylinder is provided with a water injection assembly for carrying stones.

4. The separation grouting device for coal mining according to claim 3, characterized in that: The water injection assembly includes a water inlet shell, the water inlet shell is sealingly and rotationally connected to the rotary cover, the rotary cover is rotationally connected with a water pipe, the water pipe is in communication with the water inlet shell, the top of the filter plate is fixed with a matching pipe, the matching pipe is sealingly and rotationally connected with the water pipe and is in communication with each other, and the matching pipe and the filter plate are left with annular array of apertures.

5. The device for separation grouting according to claim 4, characterized in that: The top of the filter plate is provided with a cylindrical recess, and the annular array of apertures between the matching pipe and the filter plate is located in the cylindrical recess of the filter plate.

6. The separation grouting device for coal mining according to claim 1, characterized in that: Also include a crushing assembly for crushing stone, the crushing assembly is arranged in the storage cylinder, the crushing assembly includes a second electric push rod electrically connected with the control terminal, the second electric push rod is fixedly connected to the outside of the storage cylinder, the telescopic end of the second electric push rod is rotatably connected with a pushing frame, the top of the storage cylinder is rotatably connected with a rotating ring, the pushing frame is sealingly and slidably connected with the rotating ring, the pushing frame is fixedly connected with an annular array of crushing blocks, the annular array of the crushing blocks is located inside the storage cylinder, a docking seat is fixedly connected in the storage cylinder, the annular array of the crushing blocks are in contact with the docking seat, the bottom of the storage cylinder is fixedly connected and communicated with a communication pipe, a second electromagnetic valve electrically connected with the control terminal is arranged in the communication pipe, the communication pipe is communicated with the filling pipe, and an agitation assembly for accelerating the dissolution of stone is arranged in the storage cylinder.

7. The device for separation grouting according to claim 6, characterized in that: The agitation assembly includes a second servo motor electrically connected with the control terminal, the second servo motor is fixedly connected to the top of the storage cylinder, the output shaft of the second servo motor is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with an annular array of stirring plates, the annular array of the stirring plates is alternately distributed with the annular array of the crushing blocks, and the annular array of the stirring plates is slidably connected with the adjacent crushing blocks.

8. The separation grouting device for coal mining according to claim 4, characterized in that: Also include a mirror image distributed dissolution assembly, the dissolution assembly is used for dissolving agglomerates, the dissolution assembly is arranged inside the adjacent screening cylinder, the dissolution assembly includes a third servo motor, the third servo motor is fixedly connected to the top of the adjacent screening cylinder, the third servo motor is electrically connected with the control terminal, the output shaft of the third servo motor is fixedly connected with the adjacent water pipe, the water pipe is fixedly connected with a scraper, the scraper is in contact with the adjacent filter plate, and a rapid dissolution assembly for increasing the dissolution area of agglomerates is arranged in the scraper.

9. The device for separation grouting according to claim 8, characterized in that: The rapid dissolution assembly includes an annular array of extrusion blocks, the annular array of the extrusion blocks are fixedly connected to the adjacent matching pipes, the scraper is slidably connected with a sliding shaft, the sliding shaft is fixedly connected with a linear array of scraping blocks, the linear array of the scraping blocks are slidably connected with the adjacent scraper, the annular array of the extrusion blocks are extrusion matched with the adjacent sliding shaft, and an elastic element is arranged between the scraper and the adjacent sliding shaft.

10. The device for separation grouting according to claim 9, characterized in that: The extrusion block is a right-angled triangular plate, the right-angle side of the extrusion block is attached to the matching pipe, and the inclined side of the extrusion block faces downward.

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