A coal mine underground water resource treatment system with backwashing function

Abstract

The present application relates to coal mine water treatment technical field, specifically to a kind of processing system of coal mine underground water resource with backwashing function, the processing system includes filter unit, sedimentation unit and reaction unit, filter unit includes filter and sedimentation tank connected, filter has filter part, sedimentation unit includes box and multiple filter components, box is connected with filter and sedimentation tank respectively to receive the water filtered by filter and the overflow water of sedimentation tank, multiple filter components are arranged in box with interval, filter component includes first filter plate and second filter plate, first filter plate and second filter plate are inclined plate with same inclination angle, second filter plate is close to and away from first filter plate relative to box, reaction unit includes reactor and dosing component connected, reactor receives the water filtered by filter component and reacts, the processing system of the present application embodiment can improve the flocculation effect of mine water, and then improve the water quality of mine water.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine water treatment, in particular to a coal mine underground water resource treatment system with backwashing function. BACKGROUND

[0002] In the process of mining, mine water will be contaminated, resulting in mine water containing sand and fine coal powder with different particle sizes and other organic pollutants. Direct discharge not only wastes water resources but also pollutes the environment. Therefore, mine water needs to be treated. In the related art, a flocculating agent is directly added to the mine water for flocculation and filtration. However, direct flocculation results in poor flocculation effect of the mine water, and the effluent water quality cannot meet the discharge or recycling standard. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the embodiments of the present application propose a coal mine underground water resource treatment system with backwashing function, which adjusts the interval distance between the first filter plate and the second filter plate to adapt to mine water with different water quality, which is conducive to subsequent flocculation of the mine water, thereby improving the water quality of the mine water.

[0004] The coal mine underground water resource treatment system with backwashing function of the embodiments of the present application comprises: a filtering unit, the filtering unit comprising a filter and a sedimentation tank, the filter being connected with the sedimentation tank, the filter having a filter part, the filter part being used for filtering mine water, and at least part of the mine water flowing to the sedimentation tank under interception of the filter part; a sedimentation unit, the sedimentation unit comprising a box body and a plurality of filter parts, the box body being connected with the filter and the sedimentation tank respectively to receive water filtered by the filter and overflow water of the sedimentation tank, the plurality of filter parts being arranged in the box body at intervals, the filter parts comprising a first filter plate and a second filter plate, the first filter plate and the second filter plate being inclined plates with the same inclination angle, and the second filter plate being capable of approaching and moving away from the first filter plate relative to the box body; a reaction unit, the reaction unit comprising a reactor and a dosing part, the dosing part being connected with the reactor, the reactor being connected with the box body to receive water filtered by the filter parts for reaction.

[0005] The coal mine underground water resource treatment system with backwashing function of the embodiments of the present application adjusts the interval distance between the first filter plate and the second filter plate to adapt to mine water with different water quality, which is conducive to subsequent flocculation of the mine water, thereby improving the water quality of the mine water.

[0006] In some embodiments, the sedimentation tank is provided with a plurality of baffles and collection hoppers arranged at intervals in the length direction of the sedimentation tank, the size of the plurality of baffles in the up-down direction gradually increases in the direction away from the filter, and the size of the plurality of collection hoppers in the length direction of the sedimentation tank gradually decreases in the direction away from the filter.

[0007] In some embodiments, the collection hoppers are provided with a signal generator and a signal receiver, the signal generator and the signal receiver are oppositely arranged in the length direction of the sedimentation tank, and the signal receiver is used to receive the signal emitted by the signal generator.

[0008] In some embodiments, the filter part includes a filter screen, the filter includes a housing and a guide, one end of the filter screen is elastically connected to the inner wall surface of the housing, the other end of the filter screen is elastically connected to one end of the guide, and the other end of the guide is in communication with the sedimentation tank.

[0009] In some embodiments, the number of filter screens is at least two, the two filter screens are arranged at intervals, the filter further includes a water collecting tray, the water collecting tray is located between the two filter screens, and in the flow direction of water, the filter pore size of the filter screen located upstream is greater than the filter pore size of the filter screen located downstream.

[0010] In some embodiments, the filter further includes a water inlet component and an adjusting piece, the water inlet component includes a water inlet pipe and a water outlet part, the water outlet part is hinged to the water inlet pipe, one end of the adjusting piece is connected to the water inlet pipe, and the other end of the adjusting piece is connected to the water outlet part to change the water outlet direction of the water outlet part to wash the filter screen.

[0011] In some embodiments, the sedimentation unit further includes a driving assembly, the driving assembly includes a sliding rail and a sliding block, the sliding rail is installed on the box body and extends in the length direction of the box body, one end of the sliding block is matched with the sliding rail, and the other end of the sliding block is connected with a plurality of second filter plates respectively.

[0012] In some embodiments, the sedimentation unit further includes a flushing pipe, the first filter plate and the second filter plate each have oppositely arranged first and second side surfaces, the first side surface is provided with a first recess, the flushing pipe is installed in the first recess, and the flushing pipe is provided with a spray head to flush the adjacent filter plate.

[0013] In some embodiments, the second side is provided with a second groove, the second groove can be matched with the adjacent first groove, the filter component has a combined state and a separated state, in the combined state, the second filter plate abuts against the first filter plate, and the flushing pipe is located in the first groove and the second groove, in the separated state, the second filter plate is separated from the first filter plate, and the flushing pipe can flush the filter plate.

[0014] In some embodiments, the dosing component comprises a dosing box, a stirring shaft and stirring blades, the stirring shaft and the stirring blades are both provided with dosing holes, one end of the stirring shaft is connected with the dosing box, and the other end of the stirring shaft is connected with the stirring blades. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of a coal mine underground water resource treatment system with backwashing function according to an embodiment of the present application.

[0016] Figure 2 is a schematic view of a coal mine underground water resource treatment system with backwashing function according to an embodiment of the present application, and the filter component is in a separated state.

[0017] Figure 3 is a schematic view of a coal mine underground water resource treatment system with backwashing function according to an embodiment of the present application, and the filter component is in a combined state.

[0018] Figure 4 is a schematic view of a filter part according to an embodiment of the present application.

[0019] Figure 5 is a schematic view of a driving assembly according to an embodiment of the present application.

[0020] Figure 6 is a schematic view of a second groove according to an embodiment of the present application.

[0021] REFERENCE SIGNS:

[0022] filter unit 1, filter 11, filter part 111, filter screen 1111, shell 112, guide 113, water receiving tray 114, water inlet component 115, water inlet pipe 1151, water inlet main pipe 11511, water inlet branch pipe 11512, water outlet component 1152, adjusting piece 116, first elastic piece 117, second elastic piece 118, sedimentation tank 12, baffle 121, collecting hopper 122, overflow 123, signal generator 13, signal receiver 14,

[0023] Sedimentation unit 2, housing 21, inlet 211, filter component 22, first filter plate 221, second filter plate 222, first side surface 223, second side surface 224, first groove 225, second groove 226, drive assembly 23, slide rail 231, slider 232, flushing pipe 24.

[0024] Reaction unit 3, reactor 31, dosing component 32, dosing tank 321, stirring shaft 322, stirring blade 323, dosing pipe 324, rotating seat 325, connecting pipe 4, overflow pipe 5, valve 6, conveyor belt 7, filter press 8. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] The coal mine underground water treatment system with backwashing function according to this invention includes a filtration unit 1, a sedimentation unit 2, and a reaction unit 3. The filtration unit 1 includes a filter 11 and a sedimentation tank 12. The filter 11 is connected to the sedimentation tank 12 and has a filtration section 111 for filtering mine water. At least a portion of the mine water flows to the sedimentation tank 12 after being intercepted by the filtration section 111. The sedimentation unit 2 includes a housing 21 and multiple filter components 22. The housing 21 is connected to the filter 11 and the sedimentation tank 12 respectively to receive the water filtered by the filter 11 and the overflow water from the sedimentation tank 12. The multiple filter components 22 are spaced apart within the housing 21. Each filter component 22 includes a first filter plate 221 and a second filter plate 222. The first filter plate 221 and the second filter plate 222 are inclined plates with the same inclination angle, and the second filter plate 222 can move closer to or further away from the first filter plate 221 relative to the housing 21. The reaction unit 3 includes a reactor 31 and a dosing component 32. The dosing component 32 is connected to the reactor 31, and the reactor 31 is connected to the housing 21 to receive water filtered by the filter component 22 for reaction.

[0027] Specifically, such as Figures 1-3 As shown, filter 11 is located on the left side of sedimentation tank 12. Filter 11 has a filtration section 111. During the filtration process of mine water, sand and gravel in the mine water are intercepted on the filtration section 111. A portion of the mine water also flows to sedimentation tank 12 under the interception of the filtration section 111, carrying the sand and gravel intercepted on the filtration section 111 with it. Another portion of the mine water flows through the filtration section 111. An overflow outlet 123 is provided above sedimentation tank 12. Sand and gravel, along with the mine water that enters sedimentation tank 12 with the sand and gravel, settle. The sand and gravel sink to the bottom of sedimentation tank 12 under gravity, and the mine water flows out of sedimentation tank 12 through overflow outlet 123.

[0028] The box 21 is provided with a water inlet 211 below, a plurality of filter components 22 are uniformly arranged in the left-right direction, and the first filter plate 221 and the second filter plate 222 are sequentially arranged from left to right in each filter component 22, the connecting pipe 4 is arranged between the box 21 and the filter 11 to transmit the mine water passing through the filter 11 into the box 21, the overflow pipe 5 is arranged between the box 21 and the sedimentation tank 12 to transmit the mine water overflowing in the sedimentation tank 12 into the box 21, the mine water entering the box 21 moves upward to be filtered by the filter component 22, and the fine particles and suspended matters in the mine water will settle on the filter component 22 in the process of flowing upward, and the filtered mine water flows out from the top of the box 21.

[0029] The reactor 31 is arranged on the right side of the sedimentation unit 2, the filtered mine water of the sedimentation unit 2 is transmitted into the reactor 31, the dosing component 32 adds flocculating agent into the reactor 31, the mine water reacts with the flocculating agent, the colloidal particles and suspended matters in the mine water will coagulate into larger lumps under the action of the flocculating agent and settle downward under the action of gravity, and the mine water after the reaction of the reactor 31 is discharged or recycled after subsequent disinfection reaction or other treatment.

[0030] Alternatively, the second filter plate 222 in the embodiment can move to the left until abutting against the first filter plate 221 in the filter component 22, that is, the interval distance between the second filter plate 222 and the first filter plate 221 is adjusted to change the number of filter plates participating in the sedimentation reaction of the sedimentation unit 2, when the second filter plate 222 abuts against the first filter plate 221, the mine water contacts the left end face of the first filter plate 221, and only the fine particles and suspended matters in the mine water will settle on the first filter plate 221, and only the first filter plate 221 participates in the sedimentation and filtration, when the second filter plate 222 is separated from the first filter plate 221, the mine water contacts the first filter plate 221 and the second filter plate 222 respectively, and the fine particles and suspended matters in the mine water will settle on the first filter plate 221 and the second filter plate 222, and the first filter plate 221 and the second filter plate 222 both participate in the sedimentation and filtration, when the first filter plate 221 and the second filter plate 222 are in the separated state, the interval distance between the second filter plate 222 and the adjacent two first filter plates 221 is the same, so as to ensure the uniformity of the filtration of the filter component 22.

[0031] Alternatively, the number of filter plates participating in the sedimentation and filtration is adjusted according to the proportion of sand and stone filtered by the filter unit 1, or the number of filter plates participating in the sedimentation and filtration is adjusted according to the turbidity difference between the turbidity of the mine water flowing to the reaction unit 3 and the turbidity of the mine water entering the box 21.

[0032] When the proportion of sand and stone filtered by the filtering unit 1 is greater than a preset reference proportion value, both the first filter plate 221 and the second filter plate 222 participate in the settlement filtration, and when the proportion of sand and stone filtered by the filtering unit 1 is less than or equal to the preset reference proportion value, the first filter plate 221 participates in the settlement filtration. For example, the preset reference proportion value is 15%. When the turbidity of the mine water entering the box body 21 detected by the turbidimeter is greater than a preset reference turbidity value, both the first filter plate 221 and the second filter plate 222 participate in the settlement filtration, and when the turbidity of the mine water entering the box body 21 detected by the turbidimeter is less than or equal to the preset reference turbidity value, the first filter plate 221 participates in the settlement filtration. For example, the preset reference turbidity value is 3000 mg. When the difference between the turbidity of the mine water flowing to the reaction unit 3 and the turbidity of the mine water entering the box body 21 detected by the turbidimeter is greater than a preset reference turbidity value, the subsequent settlement unit 2 is adjusted to use the first filter plate 221 to participate in the settlement filtration, and when the difference between the turbidity of the mine water flowing to the reaction unit 3 and the turbidity of the mine water entering the box body 21 detected by the turbidimeter is less than or equal to the preset reference turbidity value, the subsequent settlement unit 2 is adjusted to use both the first filter plate 221 and the second filter plate 222 to participate in the settlement filtration. For example, the preset reference turbidity value is 1000 mg.

[0033] The coal mine underground water resource processing system with the backwashing function in the embodiment of the application filters the large-particle suspended matters and sand and stone in the mine water through the filtering unit 1, avoids the blockage and abrasion of the subsequent settlement unit 2 and the reaction unit 3, filters the small-particle suspended matters and sand and stone in the mine water through the settlement unit 2, and adjusts the number of filter plates participating in the settlement filtration according to different water qualities, that is, adjusts the number of filter plates participating in the settlement filtration by adjusting the interval distance between the first filter plate 221 and the second filter plate 222, uses the first filter plate 221 to filter when the water quality is good, and uses both the first filter plate 221 and the second filter plate 222 to filter when the water quality is poor, thereby ensuring the settlement efficiency, improving the turbidity of the mine water, avoiding the influence of sand and stone, impurities and organic pollutants in the mine water on the reaction unit 3, facilitating the flocculation reaction of the mine water by the reaction unit 3, and improving the water quality of the processed mine water.

[0034] In some embodiments, the sedimentation tank 12 is provided with a plurality of baffles 121 and collection hoppers 122 arranged at intervals in the length direction of the sedimentation tank 12. The size of the plurality of baffles 121 in the up-down direction gradually increases in the direction away from the filter 11, and the size of the plurality of collection hoppers 122 in the length direction of the sedimentation tank 12 gradually decreases in the direction away from the filter 11.

[0035] Specifically, as Figures 1-3As shown, the plurality of baffles 121 are arranged in the left-right direction with a spacing, and the size of the plurality of baffles 121 in the up-down direction gradually increases from left to right, that is, the height of the plurality of baffles 121 gradually increases from left to right, and the height of the baffle 121 on the right side is greater than that of the baffle 121 on the left side.

[0036] The plurality of collecting buckets 122 are arranged in the left-right direction with a spacing and correspond to the plurality of baffles 121, and the size of the plurality of collecting buckets 122 in the left-right direction gradually decreases at the same height position from left to right, that is, the cross-sectional area of the plurality of collecting buckets 122 gradually decreases at the same height position from left to right, and the cross-sectional area of the collecting bucket 122 on the left side is greater than that of the collecting bucket 122 on the right side at the same height position.

[0037] The embodiment of the present application can intercept the mine water and gravel intercepted by the filtering unit 111 by arranging a plurality of gradually increasing baffles 121, the baffle 121 can slow down the movement speed of the gravel and the mine water to the right, and accelerate the settling speed of the gravel, and the larger the particle size of the gravel, the greater the gravity acting on it, and the faster the settling speed. The plurality of collecting buckets 122 with different cross-sectional areas cooperate with the baffles 121 with different heights to facilitate the collection of gravel by the plurality of collecting buckets 122.

[0038] In some embodiments, the collecting bucket 122 is provided with a signal generator 13 and a signal receiver 14, and the signal generator 13 and the signal receiver 14 are arranged opposite to each other in the length direction of the sedimentation tank 12, and the signal receiver 14 is used to receive the signal emitted by the signal generator 13.

[0039] Specifically, the filtering unit 1 further comprises a controller (not shown in the figure) and a valve 6, the valve 6 is arranged on the collecting bucket 122, and the signal generator 13 and the signal receiver 14 are arranged with a spacing in the left-right direction, for example, the signal generator 13 is arranged on the left side of the collecting bucket 122, and the signal generator 13 is arranged on the right side of the collecting bucket 122, and the controller is connected with the signal generator 13, the signal receiver 14 and the valve 6 respectively, and the controller adjusts the state of the valve 6 according to the light intensity of the signal emitted by the signal generator 13 received by the signal receiver 14, when the light intensity received by the signal receiver 14 is less than the preset light intensity, it indicates that the collected gravel in the collecting bucket 122 is sufficient, and the controller controls the valve 6 to open to discharge the collected gravel in the collecting bucket 122.

[0040] Optionally, the processing system further comprises a conveyor belt 7 and a filter press 8, the conveyor belt 7 is arranged below the collecting bucket 122 and connected with the filter press 8, when the valve 6 is opened, the conveyor belt 7 transmits the gravel flowing out of the collecting bucket 122 to the filter press 8 for subsequent processing.

[0041] In some embodiments, the filtering unit 111 comprises a filtering screen 1111, the filter 11 comprises a housing 112 and a guide 113, one end of the filtering screen 1111 is elastically connected to the inner wall surface of the housing 112, and the other end of the filtering screen 1111 is elastically connected to one end of the guide 113, and the other end of the guide 113 is in communication with the sedimentation tank 12.

[0042] Specifically, as shown in Figure 2 and Figure 4 the filter 11 further comprises a first elastic member 117 and a second elastic member 118, the outer contour of the projection of the filtering screen 1111 in the parallel direction to the up-down direction and the left-right direction is triangular, that is, the filtering screen 1111 is conical, the first elastic member 117 is arranged between the upper end of the filtering screen 1111 and the inner wall surface of the housing 112 to achieve the elastic connection of the filtering screen 1111 and the housing 112, and the second elastic member 118 is arranged between the lower end of the filtering screen 1111 and the guide 113 to achieve the elastic connection of the filtering screen 1111 and the guide 113, and the guide 113 receives the sand and mine water flowing down along the filtering surface of the filtering screen 1111 and transmits them to the sedimentation tank 12.

[0043] Optionally, the first elastic member 117 and the second elastic member 118 are arranged to drive the filtering screen 1111 to vibrate when the mine water flows to the filtering screen 1111, so as to reduce the accumulation of sand on the filtering screen 1111 and improve the filtering efficiency.

[0044] In some embodiments, the number of the filtering screens 1111 is at least two, the two filtering screens 1111 are arranged at intervals, the filter 11 further comprises a water receiving tray 114, the water receiving tray 114 is located between the two filtering screens 1111, and the filtering aperture of the filtering screen 1111 located upstream is larger than the filtering aperture of the filtering screen 1111 located downstream in the water flow direction.

[0045] Specifically, the two filtering screens 1111 are arranged at intervals in the up-down direction, the filtering aperture of the filtering screen 1111 located above is larger than the filtering aperture of the filtering screen 1111 located below, the water receiving tray 114 is connected to the inner wall surface of the housing 112, and the water receiving tray 114 is used to receive the mine water filtered by the filtering screen 1111 located above and transmit it to the filtering screen 1111 located below for second filtering, the mine water is filtered once by the filtering screen 1111 located above to remove the sand and other impurities with a larger particle size in the mine water, the sand with a smaller particle size in the mine water filtered once is filtered twice by the filtering screen 1111 located below, and the mine water is filtered in turn to improve the filtering efficiency of the filtering unit 1.

[0046] In some embodiments, the filter 11 further comprises a water inlet component 115 and an adjusting member 116, the water inlet component 115 comprises a water inlet pipe 1151 and a water outlet part 1152, the water outlet part 1152 is hinged to the water inlet pipe 1151, one end of the adjusting member 116 is connected to the water inlet pipe 1151, and the other end of the adjusting member 116 is connected to the water outlet part 1152 to change the water outlet direction of the water outlet part 1152 to wash the filter screen 1111.

[0047] Specifically, as shown in Figures 2-4 the water inlet pipe 1151 comprises a water inlet main pipe 11511 and a water inlet branch pipe 11512, the water inlet main pipe 11511 is arranged vertically along the up-down direction, the water inlet branch pipe 11512 extends along the left-right direction and is inclined downward, the end of the water inlet branch pipe 11512 is hinged to the water outlet part 1152, the upper end of the adjusting member 116 is connected to the water inlet branch pipe 11512, and the lower end of the adjusting member 116 is connected to the water outlet part 1152, and there is a gap between the water outlet part 1152 and the filter screen 1111, by adjusting the extension and retraction of the adjusting member 116 to change the direction of the water outlet part 1152, the filter screen 1111 can be washed conveniently.

[0048] The number of water inlet branch pipes 11512 is multiple, the multiple water inlet branch pipes 11512 are arranged along the circumferential direction of the water inlet main pipe 11511, and the multiple water inlet branch pipes 11512 are connected to the multiple water outlet parts 1152 one by one, by adjusting the water outlet order of the multiple water inlet branch pipes 11512, different positions of the filter screen 1111 can be washed, and the washing efficiency is improved.

[0049] For example, the adjusting member 116 is a telescopic rod, when the telescopic rod is extended, the direction of the water outlet part 1152 gradually inclines downward, when the telescopic rod is retracted, the direction of the water outlet part 1152 gradually inclines upward, and when the water outlet direction of the water outlet part 1152 is perpendicular to the extension direction of the filter screen 1111, the washing force of the mine water on the filter screen 1111 is the largest.

[0050] In some embodiments, the sedimentation unit 2 further comprises a driving assembly 23, the driving assembly 23 comprises a sliding rail 231 and a sliding block 232, the sliding rail 231 is installed on the box body 21 and extends along the length direction of the box body 21, one end of the sliding block 232 is matched with the sliding rail 231, and the other end of the sliding block 232 is connected to the multiple second filter plates 222 respectively.

[0051] Specifically, as shown in Figure 5 and Figure 6As shown, the slide rail 231 extends along the left-right direction and is installed above the box body 21, the upper end of the slide block 232 is matched with the slide rail 231, the lower end of the slide block 232 is connected with the second filter plate 222, and the second filter plate 222 can be driven to move along the left-right direction through the sliding of the slide block 232 on the slide rail 231. By changing the interval distance between the second filter plate 222 and the first filter plate 221, the number of filter plates participating in the sedimentation and filtration is adjusted, the filtration quality is ensured, the filtration speed is improved, and then the flocculation reaction of the subsequent reaction unit 3 is facilitated.

[0052] Alternatively, the second filter plate 222 can be vibrated by the moving speed of the slide rail 231, or the first filter plate 221 is vibrated by the moving speed of the second filter plate 222 abutting against the first filter plate 221, which is beneficial to the sedimentation of the sediments on the first filter plate 221 and the second filter plate 222 and improves the filtration effect of the filtration component 22.

[0053] For example, the driving assembly 23 further includes a driving member connected with the slide block 232 to drive the slide block 232 to move along the slide rail 231 in the left-right direction, so as to change the position of the second filter plate 222.

[0054] In some embodiments, the sedimentation unit 2 further includes a flushing pipe 24, and the first filter plate 221 and the second filter plate 222 each have a first side surface 223 and a second side surface 224 arranged oppositely, the first side surface 223 is provided with a first recess 225, and the flushing pipe 24 is installed in the first recess 225. The flushing pipe 24 is provided with a spray head (not shown in the figure) to flush the adjacent filter plate.

[0055] Specifically, as shown in Figure 5 and Figure 6 Each first filter plate 221 in each filtration component 22 is located on the left side of the second filter plate 222 in the group of filtration components 22, the right side of each filter plate is the first side surface 223, the left side of each filter plate is the second side surface 224, that is, each filter plate is provided with the first recess 225 on the right side, the flushing pipe 24 is installed in the first recess 225, the flushing pipe 24 extends along the up-down direction, and the flushing pipe 24 is provided with a spray head to flush the filter plate located on the right side of the filter plate.

[0056] In some embodiments, the second side surface 224 is provided with a second recess 226, the second recess 226 can be matched with the adjacent first recess 225, the filtration component 22 has a combined state and a separated state, in the combined state, the second filter plate 222 abuts against the first filter plate 221, and the flushing pipe 24 is located in the first recess 225 and the second recess 226, in the separated state, the second filter plate 222 is separated from the first filter plate 221, and the flushing pipe 24 can flush the filter plate.

[0057] Specifically, as shown in Figure 6 In the combined state, the second filter plate 222 abuts against the first filter plate 221, and only the first filter plate 221 participates in the sedimentation filtration, thereby improving the filtration efficiency of the mine water. In the separated state, the second filter plate 222 is separated from the first filter plate 221, and the first filter plate 221 and the second filter plate 222 participate in the sedimentation filtration. The flushing pipe 24 located on the right side of the filter plate can flush the filter plate on the right side, thereby improving the filtration effect.

[0058] For example, the number of the flushing pipes 24 can be two. The arrangement of the plurality of flushing pipes 24 improves the efficiency of the flushing pipe 24, and the plurality of flushing pipes 24 can flush multiple positions of the filter plate, thereby improving the flushing quality.

[0059] In some embodiments, the dosing component 32 comprises a dosing tank 321, a stirring shaft 322, and stirring blades 323. The stirring shaft 322 and the stirring blades 323 are both provided with dosing holes (not shown in the figure). One end of the stirring shaft 322 is connected to the dosing tank 321, and the other end of the stirring shaft 322 is connected to the stirring blades 323.

[0060] Specifically, the dosing component 32 further comprises a dosing pipe 324 and a rotating seat 325. The dosing tank 321 is arranged above the reactor 31. One end of the dosing pipe 324 is connected to the dosing tank 321, and the other end of the dosing pipe 324 is connected to the rotating seat 325. The rotating seat 325 is connected to the stirring shaft 322. The stirring shaft 322 and the stirring blades 323 are arranged in the reactor 31. The dosing pipe 324 is used to transmit the flocculant to the stirring shaft 322 and the stirring blades 323. At least one of the stirring shaft 322 and the stirring blades 323 is provided with a dosing hole. The flocculant enters the reactor 31 through the dosing hole. The rotation of the stirring blades 323 is driven by the stirring shaft 322. The mixing uniformity of the flocculant and the mine water is improved, thereby improving the flocculation effect. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0061] In addition, the terms "first", "second", "third", etc. are used herein only to describe different instances, and do not imply a relative importance or a specific order of execution. Thus, features defined with "first", "second" or "third" can include at least one of the features, either explicitly or implicitly.

[0062] In the present application, unless specifically defined otherwise, the terms "mount", "connect", "connection", "contact", and like terms are to be construed in their broadest possible sense, such as to include fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or connections allowing communication between two elements; direct connections, or indirect connections via intermediate medium; or internal communication within an element, or interaction between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.

[0063] In the present application, unless specifically defined otherwise, "on" or "under" of a first feature relative to a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate medium. Furthermore, "over", "above", and "on" of a first feature relative to a second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Under", "below", and "under" of a first feature relative to a second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0064] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that the specific feature, structure, material, or characteristic described is included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and integrated by those skilled in the art without contradiction.

[0065] It can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements, and variations to the above embodiments within the scope of the present application.

Claims

1. A coal mine underground water resource treatment system with backwash function, characterized in that, The application relates to a mine water treatment device. The device comprises a filtering unit, a sedimentation unit and a reaction unit. The filtering unit comprises a filter and a sedimentation tank, the filter is connected with the sedimentation tank, the filter has a filtering part for filtering mine water, and at least part of the mine water flows to the sedimentation tank under interception of the filtering part. The sedimentation unit comprises a box body and multiple filtering components, the box body is connected with the filter and the sedimentation tank respectively to receive filtered water of the filter and overflow water of the sedimentation tank, the multiple filtering components are arranged in the box body at intervals, the filtering components comprise a first filtering plate and a second filtering plate, the first filtering plate and the second filtering plate are inclined plates with the same inclination angle, the second filtering plate can be close to and away from the first filtering plate relative to the box body, the second filtering plate can be moved to the left until abutting against the first filtering plate in the filtering component, and the number of filtering plates participating in the sedimentation reaction of the sedimentation unit can be changed by adjusting the interval distance between the second filtering plate and the first filtering plate.

2. The coal mine underground water resource treatment system with backwash function according to claim 1, characterized in that, The reaction unit comprises a reactor and a dosing component, the dosing component is connected with the reactor, and the reactor is connected with the box body to receive filtered water of the filtering components for reaction.

3. The coal mine underground water resource treatment system with backwash function according to claim 2, characterized in that, The sedimentation tank is provided with multiple baffles arranged at intervals in the length direction of the sedimentation tank and multiple collection hoppers, the size of the multiple baffles in the up-down direction gradually increases in the direction away from the filter, and the size of the multiple collection hoppers in the length direction of the sedimentation tank gradually decreases in the direction away from the filter.

4. The coal mine underground water resource treatment system with backwash function according to claim 1, characterized in that, The collection hoppers are provided with a signal generator and a signal receiver, the signal generator and the signal receiver are arranged oppositely in the length direction of the sedimentation tank, and the signal receiver is used for receiving signals emitted by the signal generator.

5. The coal mine underground water resource treatment system with backwash function according to claim 4, characterized in that, The filtering part comprises a filter screen, the filter comprises a shell and a guide piece, one end of the filter screen is elastically connected with the inner wall surface of the shell, the other end of the filter screen is elastically connected with one end of the guide piece, and the other end of the guide piece is communicated with the sedimentation tank.

6. The coal mine underground water resource treatment system with backwash function according to claim 5, characterized in that, The number of the filter screens is at least two, the filter screens are arranged at intervals, the filter further comprises a water collecting tray, the water collecting tray is located between the two filter screens, and the filter hole diameter of the filter screen located upstream is larger than that of the filter screen located downstream in the water flow direction.

7. The coal mine underground water resource treatment system with backwash function according to claim 1, characterized in that, The filter further comprises a water inlet component and an adjusting piece, the water inlet component comprises a water inlet pipe and a water outlet part, the water outlet part is hinged with the water inlet pipe, one end of the adjusting piece is connected with the water inlet pipe, and the other end of the adjusting piece is connected with the water outlet part to change the water outlet direction of the water outlet part so as to flush the filter screen. The sedimentation unit further comprises a driving assembly, the driving assembly comprises a sliding rail and a sliding block, the sliding rail is installed on the box body and extends in the length direction of the box body, one end of the sliding block is matched with the sliding rail, and the other end of the sliding block is connected with the multiple second filtering plates respectively.

8. The coal mine underground water resource treatment system with backwash function according to claim 7, characterized in that, The precipitation unit further comprises a flushing pipe, the first filter plate and the second filter plate each have oppositely arranged first and second sides, the first side is provided with a first recess, the flushing pipe is installed in the first recess, and the flushing pipe is provided with a spray head for flushing the adjacent filter plate.

9. The coal mine underground water resource treatment system with backwash function according to claim 8, characterized in that, The second side is provided with a second recess which can cooperate with the adjacent first recess, the filter part has a combined state and a separated state, in the combined state, the second filter plate abuts against the first filter plate, and the flushing pipe is located in the first recess and the second recess, in the separated state, the second filter plate is separated from the first filter plate, and the flushing pipe can flush the filter plate.

10. The coal mine underground water resource treatment system with backwash function according to any one of claims 1-9, characterized in that, The dosing part comprises a dosing box, a stirring shaft and stirring blades, the stirring shaft and the stirring blades are each provided with a dosing hole, one end of the stirring shaft is connected with the dosing box, and the other end of the stirring shaft is connected with the stirring blades.

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