A filling material preparation device and method applied to coal mine paste filling mining

Abstract

The application relates to the technical field of coal mining, in particular to a filling material preparation device and method applied to coal mine paste filling mining, which comprises a rack and a mixing box arranged on the rack; a first spraying piece, a second spraying piece and a third spraying piece, which are equidistantly distributed in the mixing box; telescopic pipe pieces arranged in the mixing box and respectively communicated with the first spraying piece, the second spraying piece and the third spraying piece; an adjusting assembly arranged on the mixing box and connected with the telescopic pipe pieces, the adjusting assembly being capable of changing the water flow injected into the telescopic pipe pieces; and a driving assembly installed on the mixing box and connected with the telescopic pipe pieces, when the driving assembly drives the telescopic pipe pieces to act so that the first spraying piece, the second spraying piece and the third spraying piece are equidistantly far away from or close to each other, the adjusting assembly can increase or decrease the water flow injected into the telescopic pipe pieces, so that water can quickly immerse into raw materials.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining, in particular to a filling material preparation device and method applied to coal mine paste filling mining. BACKGROUND

[0002] The goaf is a "cavity" produced by human excavation or natural geological movement under the ground surface. The existence of the goaf poses a great safety problem for the safety production of the mine, and personnel and mechanical equipment can fall into the goaf and be injured.

[0003] In order to improve the safety of mine exploitation and reduce life and property losses, the goaf needs to be filled. When filling the goaf, a filling material needs to be used. The existing filling material is made of cement, fly ash, gangue, water, and a small amount of additives.

[0004] When preparing the filling material, it is found that when the total amount of the filling material is large, the water is added to the cement, fly ash, and gangue, and the water penetrates into the cement, fly ash, and gangue at a very slow speed, thereby limiting the preparation speed of the filling material. By improving, the water can be delivered to each depth position in the cement, fly ash, and gangue mixture, which to some extent solves the problem of water penetration. However, when the cement, fly ash, and gangue are large, the following problems still exist: the upper layer of cement, fly ash, and gangue in the mixing and stirring equipment will cause extrusion to the lower layer of cement, fly ash, and gangue, so that the extrusion force between the lower layer of cement, fly ash, and gangue is larger. At this time, even if the water is delivered to each depth position in the cement, fly ash, and gangue mixture, it is still difficult to keep the water penetration speed of the lower layer of raw materials consistent with that of the upper layer of raw materials, which to some extent slows down the preparation speed of the filling material. SUMMARY

[0005] The present application aims to provide a filling material preparation device and method applied to coal mine paste filling mining to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A filling material preparation device applied to coal mine paste filling mining, comprising a rack and a mixing box arranged on the rack;

[0008] A first spraying member, a second spraying member, and a third spraying member are equidistantly distributed in the mixing box;

[0009] A telescopic pipe member is arranged in the mixing box and communicates with the first spraying member, the second spraying member, and the third spraying member respectively;

[0010] An adjusting assembly is arranged on the mixing box and connected with the telescopic pipe, and the adjusting assembly can change the water flow injected into the telescopic pipe;

[0011] A driving assembly is arranged on the mixing box and connected with the telescopic pipe, and when the driving assembly drives the telescopic pipe to move to make the first, second and third spraying members equidistantly away from or close to each other, the adjusting assembly can increase or decrease the water flow injected into the telescopic pipe.

[0012] As a further scheme of the present application, the telescopic pipe comprises a third sleeve slidingly arranged on the mixing box, a second sleeve slidingly sleeved in the third sleeve, and a first sleeve slidingly sleeved in the second sleeve, and a through cavity is formed between the third sleeve and the second sleeve and between the second sleeve and the first sleeve.

[0013] The first, second and third sleeves are in communication with the first, second and third spraying members, respectively.

[0014] As a further scheme of the present application, the adjusting assembly comprises a flow box fixedly arranged on the mixing box, and a partition plate is arranged in the flow box, and a through groove is formed in the partition plate.

[0015] A stop plate slidingly abutting against the surface of the partition plate is slidingly arranged in the flow box, a through groove is arranged on the stop plate, and the through groove and the through groove can change the through capacity of the through groove.

[0016] The adjusting assembly further comprises a jacking structure connecting the driving assembly and the stop plate, and a through structure connecting the flow box and the first, second and third spraying members.

[0017] As a further scheme of the present application, the jacking structure comprises a cross frame connected with the driving assembly, a first pulley is rotatably arranged at one end of the cross frame away from the driving assembly, and the first pulley can roll in a horizontal guide arranged on the mixing box.

[0018] The jacking assembly further comprises a driving plate fixedly connected with the stop plate, an inclined groove is arranged on the driving plate, and a second pulley rotatably arranged on the cross frame can roll in the inclined groove.

[0019] As a further scheme of the present application, the through structure comprises three sets of sleeve rings, the three sets of sleeve rings are in communication with the flow box through pipes, and the three sets of sleeve rings are rotatably arranged on the first, second and third spraying members, respectively.

[0020] The first spraying part, the second spraying part and the third spraying part are circumferentially and equidistantly provided with a plurality of through holes capable of allowing water flow therethrough.

[0021] As a further scheme of the present application, the driving assembly comprises a side plate fixed to the mixing box, an electric push rod provided on the side plate, a vertical shaft connected to the telescopic end of the electric push rod, the vertical shaft is fixedly connected with the cross frame, and the vertical shaft is connected with the mixing box and the three sets of sleeve rings through a folding structure, when the vertical shaft moves towards or away from the sleeve rings, the mixing box and the three sets of sleeve rings are equidistantly away from or close to each other.

[0022] As a further scheme of the present application, it further comprises:

[0023] A connecting frame is slidingly arranged in a holding groove formed on the side wall of the mixing box, a driving device is fixedly installed on the connecting frame, and an output shaft of the driving device is connected with the first sleeve pipe;

[0024] A stirring part is rotatably installed in the mixing box, and the stirring part has a hollow structure;

[0025] An equidistant assembly is arranged between the first spraying part and the second spraying part and between the second spraying part and the third spraying part, two groups of transversely arranged rods are arranged on the equidistant assembly, and when the distance between the first spraying part and the second spraying part and between the second spraying part and the third spraying part changes, the two groups of transversely arranged rods are respectively located at the middle positions of the first spraying part and the second spraying part and the second spraying part and the third spraying part.

[0026] As a further scheme of the present application, the first sleeve pipe, the second sleeve pipe, the third sleeve pipe and the stirring part are connected with each other through limiting structures.

[0027] The limiting structure comprises a limiting protrusion and a limiting groove, the limiting protrusion and the limiting groove are slidingly matched, the limiting protrusion is arranged on the first sleeve pipe, the second sleeve pipe and the stirring part, and the limiting groove is arranged on the second sleeve pipe and the third sleeve pipe.

[0028] As a further scheme of the present application, the equidistant assembly comprises two lifting sleeve rings respectively sleeved on the first sleeve pipe and the second sleeve pipe, and the lifting sleeve rings are fixedly connected with the transversely arranged rods.

[0029] The equidistant assembly also includes two sets of rotatably connected support rods No. 1 and No. 2. The two sets of support rods No. 1 are respectively connected to spray component No. 1 and spray component No. 2, and the two sets of support rods No. 2 are respectively connected to spray component No. 2 and spray component No. 3. A convex shaft is provided at the rotatable connection between support rod No. 1 and support rod No. 2. The convex shaft can slide in the fitting groove provided along the length direction of the horizontal rod.

[0030] A triangular plate is rotatably mounted on the horizontal rod, and a third support rod is rotatably mounted on the triangular plate. The two sets of the third support rods are respectively connected to the first spraying component and the second spraying component.

[0031] A method for preparing a filler material using the preparation apparatus as described in claim , comprising the following steps:

[0032] Step 1: Connect the external water supply device to the regulating component via pipelines;

[0033] Step 2: Pour the raw materials such as cement, fly ash, and gangue into the mixing tank and start the drive device;

[0034] Step 3: The drive unit rotates the horizontal bar and the mixing component to mix the raw materials such as cement, fly ash, and gangue, so that the raw materials are fully mixed.

[0035] Step 4: After the raw materials are fully mixed, turn off the drive device. Change the distance between spray nozzles 1, 2, and 3 through the drive component, and position spray nozzle 1 at the top of the mixture. At the same time, the drive component will change the water flow rate injected into spray nozzles 1, 2, and 3 through the adjustment component. When the distance between spray nozzles 1, 2, and 3 changes, the position of the horizontal bar will also change accordingly.

[0036] Step 5: Restart the drive unit and turn on the external water supply device to allow water to fully immerse the raw material and complete the preparation of the filling material.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] By setting up adjustment components, the water flow can be evenly delivered into the mixture inside the mixing tank, allowing the water to penetrate the raw materials faster and more evenly. This shortens the cycle time in preparing filler materials. Furthermore, since the water flow speed through the flow box can be adjusted, the total amount of clean water added to the mixture is more controllable, making it easier to control the proportion of clean water in the filler material and improving the quality of the filler material preparation process.

[0039] The driving assembly and the telescopic pipe are arranged, so that when mixing raw materials with different total amounts, the height of the first spraying member can be adjusted according to the total amount of the raw materials, and the distances between the first spraying member and the second spraying member, between the second spraying member and the third spraying member, and between the third spraying member and the bottom of the mixing box are kept consistent, so that when mixing raw materials with different total amounts, the first spraying member, the second spraying member and the third spraying member can uniformly deliver clean water to each longitudinal depth of the raw materials, and the mixing speed of the clean water and the raw materials is improved, and the height of the first spraying member, the second spraying member and the third spraying member is linked to the water flow speed of the pump to the three members, so that when the amount of raw materials in the mixing box is relatively large, the height of the first spraying member, the second spraying member and the third spraying member is relatively high, and the water flow of the pump to the three members is relatively large, and vice versa, so that when preparing filling materials with different total amounts, the height of the first spraying member, the second spraying member and the third spraying member can match the water flow of the pump to the three members, on the one hand, the preparation and debugging workload when switching to produce filling materials with different total amounts is reduced due to the separate adjustment of the height of the first spraying member, the second spraying member and the third spraying member and the water flow speed of the pump to the three members, and on the other hand, the water supply changes with the total amount of the filling materials, so that the moisture in the filling materials is more controllable, and the production quality of the filling materials is further improved.

[0040] The equidistance assembly and the triangular plate are arranged, so that even when the amount of raw materials in the mixing box changes, the distances between the first spraying member, the horizontal rod, the second spraying member, the other horizontal rod and the third spraying member will remain consistent, so that the first spraying member, the horizontal rod, the second spraying member, the other horizontal rod and the third spraying member are uniformly distributed in the raw materials, and the mixing effect of the mixture is improved, and when the amount of raw materials in the mixing box is relatively large, the angle of deflection of the triangular plate increases, so that when the triangular plate rotates in a circular motion, it can stir the raw materials to a certain extent, so as to improve the looseness of the raw materials, so that the water flow can quickly penetrate into the raw materials, and avoid the situation that the extrusion of the upper layer of raw materials causes excessive extrusion force of the lower layer of raw materials, which slows down the speed of clean water entering the lower layer of raw materials, and further causes the speed of clean water penetrating into the raw materials to be inconsistent. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 A structural schematic diagram of an embodiment of the filling material preparation device applied to coal mine paste filling mining.

[0042] Figure 2 A planar structural schematic diagram of an embodiment of the filling material preparation device applied to coal mine paste filling mining.

[0043] Figure 3 A structural schematic diagram of an embodiment of the filling material preparation device applied to coal mine paste filling mining. Figure 2 An enlarged view of the structure at A in FIG. 6.

[0044] Figure 4The internal structure diagram of the mixing box in one embodiment of the filling material preparation device applied to the paste filling mining of coal mines.

[0045] Figure 5 The sectional view of the telescopic pipe fitting in one embodiment of the filling material preparation device applied to the paste filling mining of coal mines.

[0046] Figure 6 The structure diagram of the adjusting assembly in one embodiment of the filling material preparation device applied to the paste filling mining of coal mines.

[0047] Figure 7 The exploded view of the guide structure in one embodiment of the filling material preparation device applied to the paste filling mining of coal mines.

[0048] Figure 8 The structure diagram of the equidistance assembly in one embodiment of the filling material preparation device applied to the paste filling mining of coal mines.

[0049] Figure 9 The exploded view of the equidistance assembly in one embodiment of the filling material preparation device applied to the paste filling mining of coal mines.

[0050] In the figure: 1, rack; 2, mixing box; 201, dead slot; 3, No. 1 spraying part; 4, No. 1 sleeve; 5, No. 2 spraying part; 6, No. 2 sleeve; 7, No. 3 spraying part; 8, No. 3 sleeve; 9, guide chamber; 10, through hole; 11, sleeve ring; 12, No. 1 connecting rod; 13, No. 2 connecting rod; 14, No. 1 embracing cylinder; 15, No. 2 embracing cylinder; 16, No. 3 embracing cylinder; 17, cross frame; 18, No. 1 pulley; 19, horizontal guide part; 20, No. 2 pulley; 21, driving plate; 2101, inclined slot; 22, stop plate; 2201, guide slot; 23, flow box; 24, partition; 24, dredging slot; 25, side plate; 26, electric push rod; 27, vertical shaft; 28, lifting sleeve ring; 29, transversely arranged rod; 2901, fitting slot; 30, No. 1 supporting rod; 31, No. 2 supporting rod; 32, convex shaft; 33, triangular plate; 34, No. 3 supporting plate; 35, limiting slot; 36, limiting convex; 37, stirring part; 38, driving device; 39, connecting frame. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0052] In addition, elements in the present application can be referred to as being "on" or "connected to" another element by the use of terms such as "fixed to" or "mounted to" without necessarily being directly connected to the aforementioned element. The terms "vertical", "horizontal", "left", "right" and the like as used herein are made only for purposes of illustration, and thus can not be construed as being limiting.

[0053] Referring to Figures 1-9 In the embodiment of the present application, a filling material preparation device applied to coal mine paste filling mining includes a rack 1, a mixing box 2, a first spraying piece 3, a second spraying piece 5, a third spraying piece 7, a telescopic pipe piece, an adjusting assembly and a driving assembly arranged on the rack 1. When the amount of raw materials in the mixing box 2 is large, the angle of deflection of the triangular plate 33 increases, and when the triangular plate 33 performs circular motion, the triangular plate 33 can stir the raw materials to improve the loose degree of the raw materials, so that the water flow can quickly penetrate into the raw materials, avoid the situation that the water flow into the lower layer of raw materials is slowed down due to the excessive extrusion of the lower layer of raw materials caused by the extrusion of the upper layer of raw materials, and further avoid the situation that the water flow into the raw materials is inconsistent in speed.

[0054] Specifically, the first spraying piece 3, the second spraying piece 5 and the third spraying piece 7 are equidistantly distributed in the mixing box 2.

[0055] The telescopic pipe piece is arranged in the mixing box 2 and is in communication with the first spraying piece 3, the second spraying piece 5 and the third spraying piece 7 respectively. The telescopic pipe piece includes a third sleeve 8 slidingly arranged on the mixing box 2. A second sleeve 6 is slidingly sleeved in the third sleeve 8. A first sleeve 4 is slidingly sleeved in the second sleeve 6. A conduction cavity 9 is formed between the third sleeve 8 and the second sleeve 6 and between the second sleeve 6 and the first sleeve 4.

[0056] The first sleeve 4, the second sleeve 6 and the third sleeve 8 are in communication with the first spraying piece 3, the second spraying piece 5 and the third spraying piece 7 respectively.

[0057] The adjusting assembly is arranged on the mixing box 2 and is connected with the telescopic pipe piece. The adjusting assembly can change the water flow injected into the telescopic pipe piece. The adjusting assembly includes a flow-through box 23 fixedly installed on the mixing box 2. A partition plate 24 is arranged in the flow-through box 23. A dredging groove 2401 is formed in the partition plate 24.

[0058] The flow box 23 is slidably installed with a stop plate 22 which is slidably attached to the surface of the partition plate 24, the stop plate 22 is provided with a guide groove 2201, the guide groove 2201 cooperates with the dredging groove 2401 to change the guide capacity of the dredging groove 2401;

[0059] The adjusting assembly further comprises a jacking structure connecting the driving assembly and the stop plate 22, and a guide structure connecting the flow box 23 and the first spraying part 3, the second spraying part 5 and the third spraying part 7, wherein the jacking structure comprises a cross frame 17 connected with the driving assembly, one end of the cross frame 17 away from the driving assembly is rotatably installed with a first pulley 18, the first pulley 18 can roll in a horizontal guide 19 installed on the mixing box 2, the jacking assembly further comprises a driving plate 21 fixedly connected with the stop plate 22, the driving plate 21 is provided with an inclined groove body 2101, a second pulley 20 rotatably installed on the cross frame 17 can roll in the inclined groove body 2101;

[0060] The guide structure comprises three sets of nested rings 11, three sets of the nested rings 11 are respectively communicated with the flow box 23 through pipes, and three sets of the nested rings 11 are respectively sealingly rotatably installed on the first spraying part 3, the second spraying part 5 and the third spraying part 7;

[0061] The first spraying part 3, the second spraying part 5 and the third spraying part 7 are respectively provided with a plurality of through holes 10 which are circumferentially equidistantly arranged, and the through holes 10 can allow water flow to pass through.

[0062] In use, an external water supply device is connected with the flow box 23 through pipelines, and when the raw materials in the mixing box 2 are mixed, the total amount of the external water source entering the flow box 23 can be adjusted according to the total amount of the raw materials, specifically, when the driving assembly drives the cross frame 17 to move, the cross frame 17 can be laterally displaced, and the second pulley 20 connected with the cross frame 17 can also be laterally displaced, and the second pulley 20 is slidably arranged in the inclined groove body 2101, so that when the second pulley 20 is laterally displaced, the driving plate 21 will be lifted and lowered to drive the stop plate 22 to be lifted and lowered, and when the external water source enters the flow box 23, it needs to pass through the dredging groove 2401, so that when the stop plate 22 is lifted and lowered, the overlapping area of the guide groove 2201 and the dredging groove 2401 will change, thereby changing the area through which the water flow passes through the dredging groove 2401, and further changing the speed of the water flow passing through the flow box 23, so that when the clean water is added to the mixture, the total amount of the clean water is more controllable, and the amount of clean water added is avoided to be too much or too little.

[0063] When the water flow flows through the flow-through box 23, the water flow will enter into the three nested rings 11 in sequence through the conduit, at this time the water flow in the nested ring 11 will enter into the first sleeve 4, the second sleeve 6 and the third sleeve 8 through the through hole 10 respectively, and the first spraying piece 3, the second spraying piece 5 and the third spraying piece 7 are equidistantly distributed in the mixing box 2, so that the first spraying piece 3, the second spraying piece 5 and the third spraying piece 7 can uniformly deliver the water flow to the mixture in the mixing box 2, so that the water flow can be more quickly immersed into the mixture, improve the mixing speed and uniformity of the water and the mixture, and shorten the preparation period of the filling material.

[0064] Through the above setting, when the water flow is delivered to the inside of the mixture in the mixing box 2, it can be uniformly delivered to the inside of the mixture, so that the water flow can be more quickly immersed into the raw material, and the water flow is also more uniform when it is immersed into the raw material, which shortens the period in the preparation of the filling material, and based on the speed of the water flow flowing through the flow-through box 23, the total amount of the water added to the mixture can be more controlled, so that the proportion of the water in the filling material is more convenient to control, and the preparation process quality of the filling material is improved.

[0065] Please refer to Figure 3 、 Figure 4 , the driving assembly is installed on the mixing box 2 and connected to the telescopic pipe, when the driving assembly drives the telescopic pipe to act so that the first spraying piece 3, the second spraying piece 5 and the third spraying piece 7 are equidistantly away from or close to each other, the adjusting assembly can increase or decrease the water flow injected into the telescopic pipe;

[0066] The driving assembly comprises a side plate 25 fixed on the mixing box 2, the side plate 25 is provided with an electric push rod 26, the telescopic end of the electric push rod 26 is connected with a vertical shaft 27, the vertical shaft 27 is fixedly connected with the cross frame 17, and the vertical shaft 27 is connected with the mixing box 2 and the three groups of nested rings 11 through a folding structure, when the vertical shaft 27 moves towards or away from the nested ring 11, the mixing box 2 and the three groups of nested rings 11 are equidistantly away from or close to each other;

[0067] Specifically, the collecting and spreading structure comprises a first embracing cylinder 14, a second embracing cylinder 15 and a third embracing cylinder 16 which are sleeved on the vertical shaft 27, the first embracing cylinder 14, the second embracing cylinder 15 and the third embracing cylinder 16 are respectively rotatably installed with a first connecting rod 12 and a second connecting rod 13, the first connecting rod 12 on the first embracing cylinder 14 is rotatably connected with a sleeve ring 11 connected with the first sleeve 4, the second connecting rod 13 is rotatably connected with the sleeve ring 11 connected with the second sleeve 6, the first connecting rod 12 on the second embracing cylinder 15 is rotatably connected with the sleeve ring 11 connected with the second sleeve 6, the second connecting rod 13 is rotatably connected with the sleeve ring 11 connected with the third sleeve 8, the first connecting rod 12 on the third embracing cylinder 16 is rotatably connected with the sleeve ring 11 connected with the third sleeve 8, the second connecting rod 13 is rotatably connected with the mixing box 2, and the length of the first connecting rod 12 is consistent with the length of the second connecting rod 13.

[0068] In use, by controlling the electric push rod 26 to act, the distances between the first spraying part 3 and the second spraying part 5, the second spraying part 5 and the third spraying part 7, and the third spraying part 7 and the bottom of the mixing box 2 can be kept consistent, and specifically, taking that the first spraying part 3 is at the highest position as the initial state for illustration: when the total amount of the mixture in the mixing box 2 is small, the electric push rod 26 can be controlled to act to drive the vertical shaft 27 to move away from the side plate 25, at this time, since the third embracing cylinder 16 is connected with the mixing box 2 through the second connecting rod 13, the third embracing cylinder 16 will move downward along the length direction of the vertical shaft 27 to make the second connecting rod 13 deflect relative to the vertical shaft 27, and at the same time, the third embracing cylinder 16 is in a state that the central axis is parallel to the central axis of the third sleeve 8, so that the first connecting rod 12 can keep the same deflection speed as the second connecting rod 13 to deflect relative to the vertical shaft 27 in the opposite direction, thereby driving the sleeve ring 11 connected with the third sleeve 8 to move downward, at this time, the distance between the second embracing cylinder 15 and the second sleeve 6 is also reduced, so that the second connecting rod 13 connected with the second embracing cylinder 15 deflects, and the first connecting rod 12 connected with the second embracing cylinder 15 deflects in the opposite direction, thereby enabling the second sleeve 6 to move downward relative to the third sleeve 8, and the displacement amount of the second sleeve 6 relative to the mixing box 2 is twice the displacement amount of the third sleeve 8, and similarly, the displacement amount of the first sleeve 4 is also three times the displacement amount of the third sleeve 8, so as to drive the first spraying part 3, the second spraying part 5 and the third spraying part 7 to move downward respectively, and keep the distances between the first spraying part 3 and the second spraying part 5, the second spraying part 5 and the third spraying part 7, and the third spraying part 7 and the bottom of the mixing box 2 consistent.

[0069] For example, when the height of the first spraying member 3 is 60 cm, the height of the second spraying member 5 is 40 cm, and the height of the third spraying member 7 is 20 cm (the height is the distance from the first spraying member 3, the second spraying member 5, and the third spraying member 7 to the bottom of the mixing box 2), when the third spraying member 7 is lowered by 5 cm, the second spraying member 5 will be lowered by 10 cm, and the first spraying member 3 will be lowered by 15 cm, and the distance between the first spraying member 3 and the second spraying member 5, the second spraying member 5 and the third spraying member 7, and the third spraying member 7 and the bottom of the mixing box 2 will be changed from 20 cm to 15 cm.

[0070] Through the above arrangement, when mixing different total amounts of raw materials, the height of the first spraying member 3 can be adjusted according to the total amount of the raw materials, and the distance between the first spraying member 3 and the second spraying member 5, the second spraying member 5 and the third spraying member 7, and the third spraying member 7 and the bottom of the mixing box 2 remains the same, so that when mixing different total amounts of raw materials, the first spraying member 3, the second spraying member 5, and the third spraying member 7 can uniformly deliver clean water to each longitudinal depth of the raw materials, and the mixing speed between the clean water and the raw materials is improved.

[0071] Further, when the vertical shaft 27 moves away from the side plate 25, the height of the first spraying member 3, the second spraying member 5, and the third spraying member 7 will be lowered, and at the same time, the vertical shaft 27 will drive the second pulley 20 to move away from the side plate 25 through the cross frame 17, at this time, under the action of the inclined groove body 2101, the driving plate 21 will drive the stop plate 22 to move upward, and the overlapping area of the through groove 2201 and the through groove 2401 will be reduced, and the water flow will be reduced.

[0072] Through the above arrangement, the height of the first spraying member 3, the second spraying member 5, and the third spraying member 7 and the water flow speed of the pump to the three are linked to adjust, so that when the amount of raw materials in the mixing box 2 is relatively large, the height of the first spraying member 3, the second spraying member 5, and the third spraying member 7 is relatively higher, and at the same time, the water flow of the pump to the three is also larger, and vice versa, so that when preparing different total amounts of filling materials, the height of the first spraying member 3, the second spraying member 5, and the third spraying member 7 can match the water flow of the pump to the three, on the one hand, the preparation and debugging workload when switching to produce different total amounts of filling materials caused by the separate adjustment of the height of the first spraying member 3, the second spraying member 5, and the third spraying member 7 and the water flow speed of the pump to the three is reduced, on the other hand, the water supply changes with the total amount of the filling material, so that the moisture in the filling material is more controllable, and the production quality of the filling material is improved.

[0073] The first spraying part 3, the second spraying part 5 and the third spraying part 7 are in a circular ring structure, and the cross sections of the three are in a diamond structure, so that the first spraying part 3, the second spraying part 5 and the third spraying part 7 can push the raw materials to the two sides when they are ascending and descending in the raw materials, thereby reducing the movement resistance, and the bottoms of the first spraying part 3, the second spraying part 5 and the third spraying part 7 are provided with a plurality of water guide openings.

[0074] Please refer to Figure 4 、 Figure 8 、 Figure 9 A filling material preparation device applied to coal mine paste filling mining, further comprising: a connecting frame 39, a stirring part 37 and an equidistance assembly.

[0075] The connecting frame 39 is slidingly arranged in a storage groove 201 formed on the side wall of the mixing box 2, and a driving device 38 is fixedly installed on the connecting frame 39, and the output shaft of the driving device 38 is connected to the first sleeve pipe 4;

[0076] The stirring part 37 is rotationally installed in the mixing box 2, and the inside of the stirring part 37 is in a hollow structure;

[0077] The equidistance assembly is arranged between the first spraying part 3 and the second spraying part 5 and between the second spraying part 5 and the third spraying part 7, two groups of transverse rods 29 are arranged on the equidistance assembly, and when the distance between the first spraying part 3 and the second spraying part 5 and the distance between the second spraying part 5 and the third spraying part 7 change, the two groups of transverse rods 29 are respectively located at the middle positions of the first spraying part 3 and the second spraying part 5 and the second spraying part 5 and the third spraying part 7.

[0078] The first sleeve pipe 4, the second sleeve pipe 6, the third sleeve pipe 8 and the stirring part 37 are connected by limiting structures;

[0079] The limiting structure comprises limiting protrusions 36 and limiting grooves 35, the limiting protrusions 36 are slidingly matched with the limiting grooves 35, the limiting protrusions 36 are arranged on the first sleeve pipe 4, the second sleeve pipe 6 and the stirring part 37 respectively, and the limiting grooves 35 are arranged on the second sleeve pipe 6 and the third sleeve pipe 8 respectively;

[0080] The equidistance assembly comprises two lifting sleeve rings 28 which are respectively sleeved on the first sleeve pipe 4 and the second sleeve pipe 6, the lifting sleeve rings 28 are fixedly connected with the transverse rods 29, and the inner walls of the lifting sleeve rings 28 are also provided with limiting grooves 35;

[0081] The equidistance assembly further comprises two groups of rotatingly connected first support rods 30 and second support rods 31, the two groups of first support rods 30 are connected to the first spraying element 3 and the second spraying element 5 respectively, the two groups of second support rods 31 are connected to the second spraying element 5 and the third spraying element 7 respectively, and the rotating connection part of the first support rod 30 and the second support rod 31 is provided with a convex shaft 32, the convex shaft 32 can slide in the embedded groove 2901 arranged along the length direction of the transverse rod 29, wherein the length of the first support rod 30 and the second support rod 31 is consistent.

[0082] The transverse rod 29 is rotatably provided with a triangular plate 33, the triangular plate 33 is rotatably provided with a third support rod 34, and the two groups of third support rods 34 are connected to the first spraying element 3 and the second spraying element 5 respectively.

[0083] When water is added to the raw materials in the mixing box 2, the driving device 38 will act, at this time the output shaft of the driving device 38 will drive the first sleeve 4 connected thereto to rotate, and the first sleeve 4 is connected to the second sleeve 6 through the limiting convex 36 and the limiting groove 35, so that the second sleeve 6 will also rotate with the first sleeve 4, and the third sleeve 8, the lifting sleeve ring 28, the transverse rod 29 and the stirring element 37 will also rotate with the first sleeve 4, thereby being able to stir the raw materials in the mixing box 2, and when the height of the first sleeve 4, the second sleeve 6 and the third sleeve 8 changes, the distance between the first spraying element 3, the second spraying element 5 and the third spraying element 7 will also change, and when the distance between the first spraying element 3, the second spraying element 5 and the third spraying element 7 changes, the first support rod 30 and the second support rod 31 will keep the same angle with the transverse rod 29, and the transverse rod 29 will be kept between the first spraying element 3 and the second spraying element 5, and between the second spraying element 5 and the third spraying element 7, that is, even if the amount of raw materials in the mixing box 2 changes, the distance between the first spraying element 3, the transverse rod 29, the second spraying element 5, the other transverse rod 29 and the third spraying element 7 will remain consistent, so that the first spraying element 3, the transverse rod 29, the second spraying element 5, the other transverse rod 29 and the third spraying element 7 are evenly distributed in the raw materials, thereby improving the mixing effect of the mixture.

[0084] Further, when the distance between the first spraying member 3, the transverse rod 29, the second spraying member 5, the other transverse rod 29 and the third spraying member 7 is reduced, the distance between the two triangular plates 33 and the corresponding first spraying member 3 and the second spraying member 5 will also be reduced, and at this time, the deflection angle of the triangular plate 33 will also be reduced. Conversely, when the distance between the first spraying member 3, the transverse rod 29, the second spraying member 5, the other transverse rod 29 and the third spraying member 7 is increased, at this time, the total amount of raw materials in the mixing box 2 is relatively more, the distance between the two triangular plates 33 and the corresponding first spraying member 3 and the second spraying member 5 will also be increased, and at this time, the deflection angle of the triangular plate 33 will also be increased, so that when the triangular plate 33 rotates, the raw materials have a certain stirring effect, so that the raw materials are loose, and the water flow can quickly penetrate into the raw materials, avoiding the situation that the extrusion force of the lower layer of raw materials is too large due to the extrusion of the upper layer of raw materials, which slows down the speed of clean water entering the lower layer of raw materials, and further causes the speed of clean water penetrating into the raw materials to be inconsistent.

[0085] Through the above setting, when the amount of raw materials in the mixing box 2 is relatively large, the deflection angle of the triangular plate 33 is increased, and when the triangular plate 33 rotates, the raw materials have a certain stirring effect, so that the raw materials are loose, and the water flow can quickly penetrate into the raw materials, avoiding the situation that the extrusion force of the lower layer of raw materials is too large due to the extrusion of the upper layer of raw materials, which slows down the speed of clean water entering the lower layer of raw materials, and further causes the speed of clean water penetrating into the raw materials to be inconsistent.

[0086] As an embodiment of the present application, a method for preparing the filling material using the preparation device is also provided, comprising the following steps:

[0087] Step one: pipeline connection between the external water supply device and the adjusting assembly;

[0088] Step two: pour the raw materials such as cement, fly ash and gangue into the mixing box 2, and start the driving device 38;

[0089] Step three: the driving device 38 drives the transverse rod 29 and the stirring member 37 to rotate to stir the raw materials such as cement, fly ash and gangue, so that the raw materials are fully mixed;

[0090] Step four: after the raw materials are fully mixed, the driving device 38 is closed, the distance between the first spraying member 3, the second spraying member 5 and the third spraying member 7 is changed by the driving assembly, the first spraying member 3 is located at the upper part of the mixture, and the water flow injected into the first spraying member 3, the second spraying member 5 and the third spraying member 7 is changed by the adjusting assembly, and when the distance between the first spraying member 3, the second spraying member 5 and the third spraying member 7 is changed, the position of the transverse rod 29 will also be changed;

[0091] Step five: the starting drive device 38 is started again, and the external water supply device is opened, so that water is fully immersed in the raw material, and the preparation of the filling material is completed.

[0092] It is obvious to a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and it is therefore intended to embrace all changes and modifications that fall within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0093] Furthermore, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.

Claims

1. A filling material preparation device applied to coal mine paste filling mining, comprising a rack (1) and a mixing box (2) arranged on the rack (1); characterized in that Further comprising: a first spraying member (3), a second spraying member (5) and a third spraying member (7), which are equidistantly distributed in the mixing box (2); a telescopic pipe member arranged in the mixing box (2) and respectively communicated with the first spraying member (3), the second spraying member (5) and the third spraying member (7); an adjusting assembly arranged on the mixing box (2) and connected with the telescopic pipe member, the adjusting assembly being capable of changing the water flow injected into the telescopic pipe member; a driving assembly installed on the mixing box (2) and connected with the telescopic pipe member, when the driving assembly drives the telescopic pipe member to act so that the first spraying member (3), the second spraying member (5) and the third spraying member (7) are equidistantly away from or close to each other, the adjusting assembly is capable of increasing or decreasing the water flow injected into the telescopic pipe member; the telescopic pipe member comprises a third sleeve (8) slidingly arranged on the mixing box (2), a second sleeve (6) slidingly sleeved in the third sleeve (8), and a first sleeve (4) slidingly sleeved in the second sleeve (6), a through cavity (9) being formed between the third sleeve (8) and the second sleeve (6) and between the second sleeve (6) and the first sleeve (4); the first sleeve (4), the second sleeve (6) and the third sleeve (8) are respectively communicated with the first spraying member (3), the second spraying member (5) and the third spraying member (7); the adjusting assembly comprises a flow box (23) fixedly installed on the mixing box (2), the flow box (23) being internally provided with a partition plate (24), the partition plate (24) being formed with a dredging groove (2401); the flow box (23) is slidingly installed with a stop plate (22) slidingly attached to the surface of the partition plate (24), the stop plate (22) being provided with a through groove (2201), the through groove (2201) and the dredging groove (2401) being capable of changing the through capacity of the dredging groove (2401); the adjusting assembly further comprises a jacking structure connecting the driving assembly and the stop plate (22) and a through structure connecting the flow box (23) and the first spraying member (3), the second spraying member (5) and the third spraying member (7); the jacking structure comprises a cross frame (17) connected with the driving assembly, one end of the cross frame (17) away from the driving assembly being rotatably installed with a first pulley (18), the first pulley (18) being capable of rolling in a horizontal guide (19) installed on the mixing box (2); the jacking structure further comprises a driving plate (21) fixedly connected with the stop plate (22), the driving plate (21) being provided with an inclined groove body (2101), a second pulley (20) rotatably installed on the cross frame (17) being capable of rolling in the inclined groove body (2101). The conduction structure comprises three sets of nested rings (11), the three sets of nested rings (11) are communicated with the flow box (23) through pipes respectively, and the three sets of nested rings (11) are sealingly and rotatably installed on the first spraying part (3), the second spraying part (5) and the third spraying part (7) respectively; A plurality of through holes (10) are arranged on the first spraying part (3), the second spraying part (5) and the third spraying part (7) at equal intervals in a circle, and the through holes (10) can allow water flow to pass through; The driving assembly comprises a side plate (25) fixed on the mixing box (2), the side plate (25) is provided with an electric push rod (26), the telescopic end of the electric push rod (26) is connected with a vertical shaft (27), the vertical shaft (27) is fixedly connected with the cross frame (17), and the vertical shaft (27) is connected with the mixing box (2) and the three sets of nested rings (11) through a folding structure, when the vertical shaft (27) moves towards or away from the nested rings (11), the mixing box (2) and the three sets of nested rings (11) are equidistantly away from or close to each other.

2. The filling material preparation device applied to paste filling mining of coal mines according to claim 1, characterized in that, Also comprising: A connecting frame (39) is slidingly arranged in a lagging groove (201) formed in the side wall of the mixing box (2), the connecting frame (39) is fixedly provided with a driving device (38), and the output shaft of the driving device (38) is connected with the first sleeve (4); A stirring part (37) is rotatably arranged in the mixing box (2), and the inside of the stirring part (37) is in a hollow structure; An equal-distance assembly is arranged between the first spraying part (3) and the second spraying part (5) and between the second spraying part (5) and the third spraying part (7), two cross rods (29) are arranged on the equal-distance assembly, and when the distance between the first spraying part (3) and the second spraying part (5) and between the second spraying part (5) and the third spraying part (7) changes, the two cross rods (29) are located at the middle positions of the first spraying part (3) and the second spraying part (5) and the second spraying part (5) and the third spraying part (7) respectively.

3. The filling material preparation device applied to paste filling mining of coal mines according to claim 2, characterized in that, The first sleeve (4), the second sleeve (6), the third sleeve (8) and the stirring part (37) are connected with each other through a limiting structure; The limiting structure comprises a limiting protrusion (36) and a limiting groove (35), the limiting protrusion (36) and the limiting groove (35) are slidingly matched, the limiting protrusion (36) is arranged on the first sleeve (4), the second sleeve (6) and the stirring part (37) respectively, and the limiting groove (35) is arranged on the second sleeve (6) and the third sleeve (8) respectively.

4. The filling material preparation device applied to paste filling mining of coal mines according to claim 3, characterized in that, The equal-distance assembly comprises two lifting sleeve rings (28) arranged on the first sleeve (4) and the second sleeve (6) respectively, and the lifting sleeve rings (28) are fixedly connected with the cross rods (29). The equidistance assembly further comprises two groups of rotatingly connected first support rods (30) and second support rods (31), the two groups of first support rods (30) are connected with the first spraying member (3) and the second spraying member (5) respectively, the two groups of second support rods (31) are connected with the second spraying member (5) and the third spraying member (7) respectively, and the rotating connection part of the first support rod (30) and the second support rod (31) is provided with a convex shaft (32), the convex shaft (32) can slide in an embedded groove (2901) arranged along the length direction of the transverse rod (29); The transverse rod (29) is rotatably provided with a triangular plate (33), the triangular plate (33) is rotatably provided with third support rods (34), and the two groups of third support rods (34) are connected with the first spraying member (3) and the second spraying member (5) respectively.

5. A method of preparing a filling material using the preparation device according to claim 2, characterized in that, The method comprises the following steps: Step one: connecting the external water supply device with the adjusting assembly through pipelines; Step two: pouring cement, fly ash, gangue and other raw materials into the mixing box (2), and starting the driving device (38); Step three: the driving device (38) drives the transverse rod (29) and the stirring member (37) to rotate, so as to stir the cement, fly ash, gangue and other raw materials, so that the raw materials are fully mixed; Step four: after the raw materials are fully mixed, the driving device (38) is closed, the distance between the first spraying member (3), the second spraying member (5) and the third spraying member (7) is changed through the driving assembly, the first spraying member (3) is located at the upper part of the mixture, the water flow injected into the first spraying member (3), the second spraying member (5) and the third spraying member (7) is changed through the adjusting assembly, and when the distance between the first spraying member (3), the second spraying member (5) and the third spraying member (7) is changed, the position of the transverse rod (29) will also be changed; Step five: start the driving device (38) again, and open the external water supply device, so that the water is fully immersed in the raw materials, and the preparation of the filling material is completed.

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