Multi-stage treatment equipment for mine wastewater and treatment process of multi-stage treatment equipment

Abstract

The invention relates to the technical field of wastewater treatment, and particularly provides multistage treatment equipment for mine wastewater and a treatment process of the multistage treatment equipment. The multi-stage treatment equipment for the mine wastewater comprises a sedimentation tank, a rotating frame and a plurality of brackets, the settling tank is used for settling impurities in the mine wastewater; the rotating frame can be rotatably arranged in the sedimentation tank around the axis of the sedimentation tank, and a sludge discharge pipe leading to the outside is arranged on the rotating frame; the multiple supports are arranged below the rotating frame at intervals and synchronously rotate along with the rotating frame. A sludge suction pipe is arranged in each bracket, a sludge suction opening is formed in the bottom end of each sludge suction pipe, and the top end of each sludge suction pipe is communicated to a sludge discharge pipe through a connecting pipe; an openable switch plate is arranged at each sludge suction port, and the opening degree of each switch plate is positively correlated with the thickness of impurities settled in the settling tank. According to the scheme, the switch plate is arranged at the sludge suction port, and the opening degree of the switch plate is in positive correlation with the thickness of impurities precipitated in the sedimentation tank, so that the treatment efficiency and the treatment quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, in particular to multi-stage treatment equipment for mine wastewater and a treatment process thereof. Background Art

[0002] Mining operations generate a large amount of wastewater, which needs to undergo multi-stage treatment. After meeting standards, a portion is recycled and the rest is discharged. Sedimentation tanks are a crucial step in sewage treatment. During sewage treatment in sedimentation tanks, a large amount of sediment settles to the bottom of the tank. Existing technologies typically use scrapers or suction machines to clean sludge, but scrapers tend to lift sludge in the water, reducing the efficiency of impurity precipitation and thus affecting the cleaning quality. In addition, existing suction machines and scrapers leave a gap of 10-30 cm between the tank bottom to prevent the equipment from getting stuck and damaged. However, this prevents the settled sludge from being completely cleaned, affecting the cleaning quality. Furthermore, the amount of sludge settled in the sedimentation tank fluctuates greatly. During the suction process, when there is too much sludge, it can easily cause the pipe to become stuck; when there is too little sludge, it can suck too much water, affecting the efficiency and quality of sewage treatment. Summary of the Invention

[0003] The object of the present invention is to improve the treatment quality and reduce the risk of blockages.

[0004] In particular, the present invention provides a multi-stage treatment equipment for mine wastewater, comprising: a sedimentation tank for precipitating impurities in the mine wastewater; a rotating frame, which is rotatably arranged in the sedimentation tank around the axis of the sedimentation tank, and the rotating frame is provided with a mud discharge pipe leading to the outside; a plurality of brackets, which are arranged at intervals below the rotating frame and rotate synchronously with the rotating frame; a mud suction pipe is provided in each bracket, a mud suction port is provided at the bottom end of the mud suction pipe, and the top end is connected to the mud discharge pipe through a connecting pipe; an openable switch plate is provided at each mud suction port, and the degree of opening of the switch plate is positively correlated with the thickness of the impurities precipitated in the sedimentation tank.

[0005] Furthermore, one end of the switch plate is connected to a first cable, which passes through the bracket and is connected to the rotating frame; and a compression spring is passed through the first cable, one end of the compression spring abuts the bracket, and the other end abuts the switch plate; the switch plate is configured to move along the end face of the mud suction port under the traction of the first cable to open or close the mud suction port.

[0006] Furthermore, the bracket is hinged to the rotating frame, and the bracket is tilted from bottom to top toward the rotation direction of the rotating frame; the first cable is located at one end of the bracket facing the rotation direction of the rotating frame.

[0007] Furthermore, a plurality of support columns arranged at intervals are provided at the bottom end of the switch plate, and the support columns are fixedly connected to the bracket for supporting the switch plate and scraping off impurities on the switch plate when the switch plate moves.

[0008] Further, the switch plate connected to one end of the first cable is further provided with a plurality of guide columns, the plurality of guide columns pass through the support, and the axis of the guide column is parallel to the moving direction of the switch plate.

[0009] Optionally, the support is hinged to the rotating frame, and the support is configured to adjust the rotating angle of the support according to the pressure difference between the top and bottom ends of the suction pipe, so that the height change of the suction port from the bottom surface of the sedimentation tank is positively correlated with the pressure difference between the top and bottom ends of the suction pipe.

[0010] Further, the multi-stage treatment device for mine wastewater further comprises: an induction valve arranged on the support and communicated with the suction pipe; a rotating plate is arranged in the induction valve, the rotating plate is arranged obliquely to the flow direction of the liquid in the suction pipe, and a torsional spring is arranged between the rotating plate and the side wall of the induction valve; one end of the rotating plate close to the side wall of the induction valve is fixed with a rotating shaft, both ends of the rotating shaft pass through the wall surface of the induction valve, and a rotating wheel is fixed to the rotating shaft; a second cable is arranged on the side of the support away from the rotating direction of the rotating frame, one end of the second cable is connected to the rotating frame, and the other end of the second cable is connected to the rotating wheel.

[0011] Further, a platform is arranged on the rotating frame, and a slidable sliding shaft is arranged on the platform; one end of the second cable away from the rotating wheel is connected to the sliding shaft; a guide block is arranged on the platform, and an inclined surface is formed on the side of the guide block facing the sliding shaft; the sliding shaft abuts against the inclined surface; an adjusting arm is arranged on the support, and when the support rotates away from the bottom surface of the sedimentation tank, the adjusting arm pushes the sliding shaft to slide upward along the inclined surface, so that the tension of the second cable increases.

[0012] The present application also provides a mine wastewater treatment process, which adopts the above-mentioned any one of the multi-stage treatment device for mine wastewater, and comprises the following steps: injecting the mine wastewater to be treated into the sedimentation tank; controlling the rotating frame to rotate, and adjusting the opening degree of the switch plate at the bottom end of the suction pipe according to the thickness of the impurities deposited in the sedimentation tank, so that the impurities accumulated on the bottom surface of the sedimentation tank are sucked into the suction pipe and discharged from the sludge discharge pipe through the connecting pipe; wherein the opening degree of the switch plate is positively correlated with the thickness of the impurities deposited in the sedimentation tank.

[0013] The present application has the following advantages: The multi-stage treatment device for mine wastewater and the treatment process thereof of the present application set a switch plate at the suction port at the bottom end of the suction pipe, and adjust the opening degree of the switch according to the thickness of the impurities deposited in the sedimentation tank, so that the opening degree of the suction port is adapted to the thickness of the impurities deposited in the sedimentation tank. The thicker the impurities are accumulated, the greater the opening degree of the suction port is, so that the suction pipe can suck more impurities, thereby improving the treatment efficiency. The smaller the thickness of the impurities is accumulated, the smaller the opening degree of the suction port is, so that the water content in the liquid sucked by the suction pipe is not too high, thereby affecting the treatment quality.

[0014] Furthermore, the multi-stage treatment equipment for mine wastewater of the present invention and the treatment process thereof are provided with a bracket that can move relative to the rotating frame, so that the height of the mud suction port from the bottom surface of the sedimentation tank is adjustable. The height between the mud suction port and the bottom surface of the sedimentation tank is adjusted according to the pressure difference change at the top and bottom ends of the mud suction pipe, so that the height change between the mud suction port and the bottom surface of the sedimentation tank is positively correlated with the pressure difference change at the top and bottom ends of the mud suction pipe. When the pressure difference at the top and bottom ends of the mud suction pipe increases (that is, when the impurities attached to the mud suction pipe affect the smoothness of the liquid flow), the mud suction port is moved away from the bottom surface of the sedimentation tank, so that the mud suction port is away from the impurities and can absorb more water. The mud suction pipe is flushed by the flow of liquid with a higher water content, so that the suction of the mud suction pipe is restored to be smooth, reducing the risk of blockage of the mud suction pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. In the accompanying drawings: Figure 1 2 is a schematic structural diagram of a multi-stage treatment device for mining wastewater according to an embodiment of the present invention; Figure 2 is a schematic structural diagram from another angle of a multi-stage treatment device for mining wastewater according to one embodiment of the present invention; Figure 3 is a schematic structural diagram of a rotating frame and a bracket according to an embodiment of the present invention; Figure 4 yes Figure 3 Schematic enlarged view of region A; Figure 5 is a schematic structural diagram of a rotating frame and a bracket at another angle according to an embodiment of the present invention; Figure 6 is a schematic structural diagram of a platform and a bracket according to one embodiment of the present invention; Figure 7 is a schematic structural diagram of a platform and a bracket according to another angle of view of an embodiment of the present invention; Figure 8 is a schematic cross-sectional view of a platform and a bracket according to one embodiment of the present invention; Figure 9 yes Figure 8 Schematic enlarged view of middle region B; Figure 10 yes Figure 8 Schematic enlargement of the middle region C; Figure 11 3 is a structural schematic diagram of a platform and a bracket at another angle according to an embodiment of the present invention.

[0016] in: 100, sedimentation tank; 200, rotating frame; 210, mud discharge pipe; 211, mud discharge port; 220, wastewater inlet pipe; 230, platform; 240, sliding shaft; 250, guide block; 251, inclined surface; 260, collecting frame; 270, scraper; 280, walking frame; 300, bracket; 310, mud suction pipe; 311, first section; 312, second section; 320, mud suction port; 330, connecting pipe; 340, switch plate; 341, first cable; 342, compression spring; 343, guide column; 350, support column; 360, induction valve; 361, rotating plate; 362, rotating shaft; 363, rotating wheel; 370, second cable; 380, adjusting arm; 381, through groove. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] The terms "first" and "second" in this document are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or more of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0019] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0020] Refer to the following Figures 1 to 11 To describe a multi-stage treatment equipment for mine wastewater provided by the present invention.

[0021] This embodiment provides a multi-stage treatment device for mining wastewater, which generally includes: a settling tank 100 , a rotating frame 200 , and a plurality of supports 300 .

[0022] The sedimentation tank 100 is used to precipitate impurities in mining wastewater. A rotating frame 200 is mounted within the sedimentation tank 100, rotatably around the axis of the sedimentation tank 100. A sludge discharge pipe 210 leading to the outside is provided on the rotating frame 200. Multiple brackets 300 are spaced apart below the rotating frame 200 and rotate synchronously with the rotating frame 200. Each bracket 300 is equipped with a sludge suction pipe 310. The bottom end of the sludge suction pipe 310 is provided with a sludge suction port 320, and the top end is connected to the sludge discharge pipe 210 via a connecting pipe 330. Each sludge suction port 320 is equipped with an openable switch plate 340, and the degree of opening of the switch plate 340 is positively correlated with the thickness of the impurities deposited in the sedimentation tank 100.

[0023] This embodiment employs a switch plate 340 at the sludge suction port 320 at the bottom of the sludge suction pipe 310. The degree of opening of the switch is adjusted according to the thickness of the impurities deposited in the sedimentation tank 100, ensuring that the degree of opening of the sludge suction port 320 is compatible with the thickness of the impurities deposited in the sedimentation tank 100. The thicker the impurity accumulation, the wider the opening of the sludge suction port 320, allowing the sludge suction pipe 310 to absorb more impurities and thereby improving treatment efficiency. The thinner the impurity accumulation, the narrower the opening of the sludge suction port 320, preventing the sludge suction pipe 310 from absorbing excess water while simultaneously absorbing impurities, thereby improving treatment quality.

[0024] like Figure 1 As shown, a wastewater inlet pipe 220 is provided in the sedimentation tank 100 to inject the ore wastewater to be treated into the sedimentation tank 100. Figure 2 、 Figure 3 As shown, the mud discharge port 211 of the mud discharge pipe 210 is preferably lower than the mud suction port 320 of the mud suction pipe 310, so as to utilize siphon effect to suck mud. In other embodiments, the mud discharge pipe 210 can be connected to a pump body for suction.

[0025] To adjust the opening degree of the switch plate 340, in some embodiments, a first cable 341 is connected to one end of the switch plate 340. The first cable 341 passes through the bracket 300 and is connected to the rotating frame 200. A compression spring 342 is also threaded through the first cable 341. One end of the compression spring 342 abuts the bracket 300, and the other end abuts the switch plate 340. The switch plate 340 is configured to move along the end surface of the mud suction port 320 under the pull of the first cable 341 to open or close the mud suction port 320.

[0026] This embodiment, by providing a first cable 341 and a compression spring 342, allows the switch plate 340 to translate along the end surface of the mud suction port 320 under the pull of the first cable 341 and the elastic force of the compression spring 342, thereby opening or closing the mud suction port 320. This not only has a simple structure and low cost, but also operates stably. The first cable 341 is preferably a steel cable.

[0027] In order to adjust the opening degree of the switch plate 340 , in other embodiments, the switch plate 340 may be hinged to the bracket 300 , and the rotation of the switch plate 340 may be controlled by a motor, thereby realizing the opening and closing control of the mud suction port 320 .

[0028] In some embodiments where the first cable 341 is provided, the position of the first cable 341 on the rotating frame 200 is adjustable, so that the initial opening degree of the mud suction port 320 can be adjusted, and the initial opening degree of the mud suction port 320 can be adapted to the type of impurities. When a greater suction force is required to suck up the impurities, the initial opening degree of the mud suction port 320 is set to a greater degree to ensure a cleaning effect.

[0029] In some embodiments where the first cable 341 is provided, to achieve retraction of the first cable 341, the bracket 300 is hingedly connected to the rotating frame 200, and the bracket 300 is tilted from bottom to top in the direction of rotation of the rotating frame 200. The first cable 341 is located at one end of the bracket 300 that faces the direction of rotation of the rotating frame 200.

[0030] In the solution of this embodiment, the bracket 300 is hinged to the rotating frame 200, and the bracket 300 is arranged to be inclined from bottom to top toward the rotation direction of the rotating frame 200. When the rotating frame 200 rotates, the bracket 300 contacts the accumulated impurities and is pushed by the impurities to rotate relative to the rotating frame 200, so that the first cable 341 pulls the switch plate 340 to move.

[0031] The thicker the impurities deposited in the sedimentation tank 100, the greater the angle at which the bracket 300 rotates away from the rotating frame 200 under the push of the impurities when the rotating frame 200 rotates. This causes the first cable 341 to be pulled a greater distance, thereby further opening the switch plate 340. By utilizing the spontaneous rotation of the bracket 300 under the push of the impurities when the rotating frame 200 rotates, not only does this ensure that the opening of the sludge suction port 320 matches the thickness of the impurities, thereby improving processing efficiency, but it also has a simple structure, low cost, and stable operation.

[0032] In addition, the rotatable bracket 300 allows the initial distance between the mud suction port 320 and the bottom surface of the sedimentation tank 100 to be set smaller, and the mud suction port 320 can even be close to the bottom surface of the sedimentation tank 100 to improve the processing quality. At the same time, the bracket 300 can rotate under the push of impurities, thereby preventing the bracket 300 from getting stuck. Furthermore, the bracket 300 rotates relative to the rotating frame 200 under the push of impurities, and the height between the mud suction port 320 and the bottom surface of the sedimentation tank 100 is positively correlated with the thickness of the impurities. The greater the thickness of the impurities, the greater the rotation angle of the bracket 300 relative to the rotating frame 200, so that the height of the mud suction port 320 from the bottom surface of the sedimentation tank 100 is greater, thereby preventing the mud suction pipe 310 from being clogged due to excessive impurity content in the liquid sucked by the mud suction port 320.

[0033] like Figure 7 、 Figure 8 As shown, as the rotation angle of the bracket 300 increases, the opening degree of the mud suction port 320 continues to increase, and the size of the mud suction port 320 in the vertical direction continues to increase, so that the mud suction pipe 310 can absorb impurities in the lower layer while also absorbing water in the upper layer, thereby reducing the risk of blockage of the mud suction pipe 310.

[0034] In other embodiments in which a first cable 341 is provided, the bracket 300 can be fixed relative to the rotating frame 200 to enable reeling of the first cable 341. A sensor for detecting the thickness of impurities is provided in the settling tank 100. A motor connected to the first cable 341 is provided on the rotating frame 200. The motor controls the reeling or unreeling of the first cable 341 based on the sensor's detection results, thereby opening or closing the sludge suction port 320.

[0035] In some embodiments where the switch plate 340 is moved by pulling the first cable 341, a plurality of spaced support columns 350 are provided at the bottom end of the switch plate 340. The support columns 350 are fixedly connected to the bracket 300 and are used to support the switch plate 340 and scrape off impurities on the switch plate 340 when the switch plate 340 moves.

[0036] The solution of this embodiment, by providing a support column 350 at the bottom end of the switch plate 340, can not only support the switch plate 340, but also scrape off impurities attached to the switch plate 340 when the switch plate 340 moves, thereby ensuring smooth operation of the switch plate 340.

[0037] like Figure 11As shown, in some embodiments in which the switch plate 340 is moved by the first cable 341, a plurality of first cables 341 can also be arranged on the switch plate 340, and the end of the switch plate 340 connected to the first cable 341 can be provided with a plurality of guide columns 343. The plurality of guide columns 343 pass through the support 300 and are staggered with the plurality of first cables 341. The axis of the guide column 343 is parallel to the moving direction of the switch plate 340, so that the movement of the switch plate 340 is more stable and smooth. A compression spring 342 can be sleeved on the guide column 343, so that the reset of the switch plate 340 is more smooth.

[0038] In further embodiments, the position of the support 300 relative to the rotating frame 200 is adjustable, and the support 300 is configured to adjust the height of the suction port 320 from the bottom surface of the sedimentation tank 100 according to the change in pressure difference between the top and bottom ends of the suction pipe 310; wherein the change in height between the suction port 320 and the bottom surface of the sedimentation tank 100 is positively correlated with the change in pressure difference between the top and bottom ends of the suction pipe 310.

[0039] The scheme of the present embodiments provides that the support 300 is movable relative to the rotating frame 200, so that the height of the suction port 320 from the bottom surface of the sedimentation tank 100 is adjustable. The height between the suction port 320 and the bottom surface of the sedimentation tank 100 is adjusted according to the change in pressure difference between the top and bottom ends of the suction pipe 310, so that the change in height between the suction port 320 and the bottom surface of the sedimentation tank 100 is positively correlated with the change in pressure difference between the top and bottom ends of the suction pipe 310. When the pressure at the top and bottom ends of the suction pipe 310 increases (i.e. when blockage occurs in the suction pipe 310, causing poor flow of liquid), the support 300 is controlled to move, so that the height between the suction port 320 and the bottom surface of the sedimentation tank 100 increases, and the suction port 320 moves away from the impurities, thereby reducing the content of impurities in the liquid sucked into the suction pipe 310 and increasing the water content. The flow of liquid with higher water content washes away the impurities attached to the suction pipe 310, thereby restoring the smoothness of the suction of the suction pipe 310 and reducing the risk of blockage of the suction pipe 310.

[0040] In some preferred embodiments, pressure sensors can be arranged at the top and bottom ends of the suction pipe 310, respectively, for detecting the change in liquid pressure at the top and bottom ends of the suction pipe 310.

[0041] In order to make the position of the support 300 relative to the rotating frame 200 adjustable, in some embodiments, the support 300 is hinged to the rotating frame 200, and the support 300 is configured to adjust the rotation angle of the support 300 according to the change in pressure difference between the top and bottom ends of the suction pipe 310, so that the change in height of the suction port 320 from the bottom surface of the sedimentation tank 100 is adapted to the change in pressure difference between the top and bottom ends of the suction pipe 310.

[0042] This embodiment employs a hinged connection between the bracket 300 and the rotating frame 200. The bracket 300 rotates to adjust the height of the sludge suction port 320 from the bottom surface of the sedimentation tank 100. This arrangement provides a simple structure and stable and reliable operation. Furthermore, the rotation of the bracket 300 not only increases the adjustable range of the sludge suction port 320, but also, as the rotation angle increases, the bracket 300 only needs to rotate a smaller angle to increase the height between the sludge suction port 320 and the bottom surface of the sedimentation tank 100, making adjustment more sensitive and convenient.

[0043] In order to make the position of the bracket 300 relative to the rotating frame 200 adjustable, in other embodiments, the bracket 300 can adopt a telescopic structure, wherein the part close to the rotating frame 200 is fixedly connected to the rotating frame 200, and the part away from the rotating frame 200 is telescopic, so that the height of the mud suction port 320 from the bottom surface of the sedimentation tank 100 can be adjusted.

[0044] In some embodiments where the support 300 is hingedly connected to the rotating frame 200, the multi-stage mine wastewater treatment equipment may also generally include: an induction valve 360 ​​and a second cable 370. The induction valve 360 ​​is mounted on the support 300 and connected to the sludge suction pipe 310. A rotating plate 361 is disposed within the induction valve 360. The rotating plate 361 is tilted toward the direction of liquid flow within the sludge suction pipe 310, and a torsion spring is disposed between the rotating plate 361 and the side wall of the induction valve 360. A rotating shaft 362 is fixed to one end of the rotating plate 361, which is adjacent to the side wall of the induction valve 360. Both ends of the rotating shaft 362 pass through the wall of the induction valve 360 ​​and are fixed to a rotating wheel 363. The second cable 370 is disposed on the side of the support 300 that faces away from the rotation direction of the rotating frame 200. One end of the second cable 370 is connected to the rotating frame 200 and the other end is connected to the rotating wheel 363.

[0045] This embodiment employs a sensing valve 360 ​​connected to the sludge suction pipe 310 and a rotating plate 361 within the sensing valve 360. The liquid flowing in the sludge suction pipe 310 propels the rotating plate 361 to rotate, resulting in a correlation between the rotation of the rotating plate 361 and the flow rate of the liquid flowing in the sludge suction pipe 310. When impurities accumulate in the sludge suction pipe 310, resulting in poor liquid flow, the propulsion force exerted on the rotating plate 361 by the liquid is reduced. Under the force of the torsion spring, the rotating plate 361 rotates away from the sidewall of the sensing valve 360. This, in turn, drives the rotating wheel 363 to rotate synchronously via the rotating shaft 362, causing the second cable 370 to reel in. The reeling of the second cable 370 rotates the bracket 300, moving the sludge suction port 320 away from the bottom of the sedimentation tank 100. This increases the water content of the liquid drawn into the sludge suction pipe 310, allowing the sludge suction pipe 310 to return to normal operation by flushing with the higher-water-content liquid. After the liquid flow in the sludge suction pipe 310 resumes smooth flow, the rotating plate 361, driven by the flowing liquid, compresses the elastic force of the torsion spring and approaches the side wall of the sensing valve 360, thereby driving the rotating wheel 363 to rotate and pay out the second cable 370. Paying out the second cable 370 causes the bracket 300 to rotate under the action of gravity, bringing the sludge suction port 320 closer to the bottom surface of the sedimentation tank 100. This allows the sludge suction pipe 310 to absorb more impurities and improve processing efficiency. The second cable 370 is preferably a steel cable.

[0046] like Figure 9 As shown, the sludge suction pipe 310 includes a first section 311 and a second section 312. The induction valve 360 ​​is disposed between the first and second sections 311, 312, with its top and bottom ends communicating with the first and second sections 311, 312, respectively. A torsion spring (not shown) has one end connected to the rotating plate 361 and the other end connected to the sidewall of the induction valve 360.

[0047] In other embodiments where the bracket 300 is hinged to the rotating frame 200 , a motor may be provided on the rotating frame 200 , and the hinge point between the bracket 300 and the rotating frame 200 is connected to the motor, thereby directly driving the bracket 300 to rotate using the motor.

[0048] In a further embodiment, a platform 230 is provided on the rotating frame 200, and a slidable sliding shaft 240 is provided on the platform 230. The end of the second cable 370 away from the rotating wheel 363 is connected to the sliding shaft 240. A guide block 250 is provided on the platform 230, and an inclined surface 251 is formed on the side of the guide block 250 facing the sliding shaft 240. The sliding shaft 240 abuts the inclined surface 251. An adjustment arm 380 is provided on the bracket 300. When the bracket 300 rotates away from the bottom surface of the sedimentation tank 100, the adjustment arm 380 pushes the sliding shaft 240 to slide upward along the inclined surface 251, thereby increasing the tension of the second cable 370.

[0049] likeFigure 7 As shown, one end of the adjustment arm 380 is fixedly connected to the bracket 300. When the bracket 300 rotates relative to the rotating frame 200, the adjustment arm 380 is driven to rotate synchronously. The adjustment arm 380 is formed with an arc-shaped through slot 381, and the sliding shaft 240 is inserted into the through slot 381.

[0050] In this embodiment, the end of the second cable 370 away from the rotating wheel 363 is connected to a slidable sliding shaft 240. An adjusting arm 380 is provided to push the sliding shaft 240 upward along the inclined surface 251 when the bracket 300 rotates, thereby allowing the second cable 370 to remain tensioned after the bracket 300 rotates. If the thickness of the impurities settled in the sedimentation tank 100 changes, causing the bracket 300 to rotate relative to the rotating frame 200, the rotating plate 361 can still rotate in response to the pressure changes in the mud suction pipe 310, and the bracket 300 can be rotated by the second cable 370, thereby reducing the risk of clogging the mud suction pipe 310.

[0051] Furthermore, in this embodiment, by providing a guide block 250 having an inclined surface 251 on the platform 230, the sliding shaft 240 slides along the inclined surface 251 of the guide block 250 when the bracket 300 rotates relative to the rotating frame 200. This results in a greater tension in the second cable 370 as the bracket 300 rotates (i.e., as the sludge suction port 320 approaches the rotating frame 200). As the thickness of impurities deposited in the sedimentation tank 100 increases, the bracket 300 rotates to move the sludge suction port 320 away from the bottom surface of the sedimentation tank 100. As the bracket 300 rotates further, the tension in the second cable 370 increases, causing the bracket 300 to rotate further, increasing its rotation angle. This prevents the sludge suction pipe 310 from ingesting excessive impurities and reduces the risk of clogging.

[0052] like Figure 1 As shown, the settling tank 100 may also be provided with a collection frame 260 for discharging suspended impurities, and a rotating scraper 270. As the scraper 270 rotates, it pushes impurities suspended on the water surface into the collection frame 260 for discharge. The settling tank 100 may also be provided with a walking frame 280 fixed to the settling tank 100 to facilitate operation and maintenance of the equipment.

[0053] The specific working process of the multi-stage treatment equipment for mining wastewater provided by the present invention is described in combination with the above embodiments: taking the embodiment in which the bracket 300 and the rotating frame 200 are hinged as an example: The wastewater inlet pipe 220 injects the mine wastewater into the sedimentation tank 100 , and the impurities in the mine wastewater are precipitated and accumulated in the sedimentation tank 100 .

[0054] The rotating frame 200 rotates and drives the bracket 300 to rotate synchronously. The mud suction pipe 310 absorbs the liquid at the bottom of the sedimentation tank 100 and discharges it through the connecting pipe and the mud discharge pipe 210.

[0055] As the rotating frame 200 rotates, the support 300, pushed by impurities, rotates relative to the rotating frame 200. When the impurities deposited in the settling tank 100 are thick, the support 300 rotates toward the rotating frame 200 under the impurities' push. This stretches the first cable 341, which in turn pulls the switch plate 340, widening the opening of the sludge suction port 320 and improving treatment efficiency. When the impurities deposited in the settling tank 100 become thinner, the support 300 rotates away from the rotating frame 200 under the action of gravity, bringing the sludge suction port 320 closer to the impurities. Simultaneously, the first cable 341 relaxes, pushing the switch plate 340 under the action of the compression spring 342, reducing the opening of the sludge suction port 320. This prevents the liquid drawn in by the sludge suction port 320 from having an excessively high water content, which could affect treatment quality.

[0056] During the process of liquid suction by the sludge suction pipe 310, if the liquid flow in the sludge suction pipe 310 is not smooth, the thrust exerted by the liquid on the rotating plate 361 is small. Under the elastic force of the torsion spring, the rotating plate 361 rotates away from the side wall of the sensing valve 360, and then drives the rotating wheel 363 to rotate synchronously via the rotating shaft 362, causing the second cable 370 to be reeled in. The reeling of the second cable 370 causes the rotation of the bracket 300, causing the sludge suction port 320 to move away from the bottom surface of the sedimentation tank 100, thereby increasing the water content of the liquid sucked in by the sludge suction pipe 310. The sludge suction pipe 310 is then flushed by the liquid with a higher water content, restoring its normal state. At the same time, the upward rotation of the bracket 300 also stretches the first cable 341, causing the sludge suction port 320 to open wider, thereby increasing the suction force of the sludge suction pipe 310 and improving the flushing effect on the sludge suction pipe 310.

[0057] After the liquid flow in the sludge suction pipe 310 resumes smooth flow, the rotating plate 361, driven by the flowing liquid, compresses the elastic force of the torsion spring and approaches the side wall of the sensing valve 360, thereby driving the rotating wheel 363 to rotate and pay out the second cable 370. The payout of the second cable 370 causes the bracket 300 to rotate under the action of gravity, bringing the sludge suction port 320 closer to the bottom surface of the sedimentation tank 100, thereby allowing the sludge suction pipe 310 to absorb more impurities and improve treatment efficiency. Simultaneously, the downward rotation of the bracket 300 also loosens the first cable 341, reducing the opening of the sludge suction port 320. This reduces the water content of the liquid drawn by the sludge suction pipe 310, thereby ensuring treatment quality.

[0058] The embodiment also provides a mine wastewater treatment process, which adopts the multi-stage mine wastewater treatment device of any one of the above, and comprises the following steps: injecting the mine wastewater to be treated into the sedimentation tank 100; controlling the rotary frame 200 to rotate, and adjusting the opening degree of the opening and closing plate 340 at the bottom end of the suction pipe 310 according to the thickness of the impurities deposited in the sedimentation tank 100, so that the impurities accumulated on the bottom surface of the sedimentation tank 100 are sucked into the suction pipe 310 and discharged from the sludge discharge pipe 210 through the connecting pipe 330; wherein the opening degree of the opening and closing plate 340 and the thickness of the impurities deposited in the sedimentation tank 100 are positively correlated.

[0059] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as falling within the scope of the present disclosure.

[0060] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A multi-stage treatment equipment for mine wastewater, characterized in that: include: Sedimentation tanks, used to precipitate impurities in mine wastewater; A rotating frame is rotatably arranged in the sedimentation tank around the axis of the sedimentation tank, and a mud discharge pipe leading to the outside is provided on the rotating frame; A plurality of brackets are arranged at intervals below the rotating frame and rotate synchronously with the rotating frame; a mud suction pipe is provided in each of the brackets, a mud suction port is provided at the bottom end of the mud suction pipe, and the top end is connected to the mud discharge pipe through a connecting pipe; an openable switch plate is provided at each mud suction port, and the opening degree of the switch plate is positively correlated with the thickness of the impurities precipitated in the sedimentation tank.

2. The multi-stage treatment equipment for mine wastewater according to claim 1, characterized in that: One end of the switch plate is connected to a first cable, which passes through the bracket and is connected to the rotating frame; and a compression spring is passed through the first cable, one end of the compression spring abuts against the bracket, and the other end abuts against the switch plate; the switch plate is configured to move along the end surface of the mud suction port under the traction of the first cable to open or close the mud suction port.

3. The multi-stage treatment equipment for mine wastewater according to claim 2, characterized in that: The bracket is hinged to the rotating frame, and the bracket is tilted from bottom to top toward the rotating direction of the rotating frame; the first cable is located at one end of the bracket facing the rotating direction of the rotating frame.

4. The multi-stage treatment equipment for mine wastewater according to claim 2, characterized in that: A plurality of support columns arranged at intervals are provided at the bottom end of the switch plate. The support columns are fixedly connected to the bracket and are used to support the switch plate and scrape off impurities on the switch plate when the switch plate moves.

5. The multi-stage treatment equipment for mine wastewater according to claim 2, characterized in that: A plurality of guide posts are further provided at one end of the switch plate connected to the first cable. The plurality of guide posts pass through the bracket, and the axes of the guide posts are parallel to the moving direction of the switch plate.

6. The multi-stage treatment equipment for mine wastewater according to claim 1, characterized in that: The bracket is hinged to the rotating frame, and the bracket is configured to adjust the rotation angle of the bracket according to the pressure difference change between the top and bottom ends of the mud suction pipe, so that the height change of the mud suction port from the bottom surface of the sedimentation tank is positively correlated with the pressure difference change between the top and bottom ends of the mud suction pipe.

7. The multi-stage treatment equipment for mine wastewater according to claim 6, characterized in that: Also includes: An induction valve is provided on the bracket and is connected to the mud suction pipe; a rotating plate is provided in the induction valve, the rotating plate is inclined toward the flow direction of the liquid in the mud suction pipe, and a torsion spring is provided between the rotating plate and the side wall of the induction valve; a rotating shaft is fixed to one end of the rotating plate close to the side wall of the induction valve, and both ends of the rotating shaft pass through the wall surface of the induction valve and are fixed with a runner; The second cable is arranged on a side of the bracket away from the rotation direction of the rotating frame, with one end connected to the rotating frame and the other end connected to the rotating wheel.

8. The multi-stage treatment equipment for mine wastewater according to claim 7, characterized in that: A platform is provided on the rotating frame, and a slidable sliding shaft is provided on the platform; the end of the second cable away from the rotating wheel is connected to the sliding shaft; a guide block is provided on the platform, and an inclined surface is formed on the side of the guide block facing the sliding shaft; the sliding shaft abuts against the inclined surface; an adjusting arm is provided on the bracket, and when the bracket rotates away from the bottom surface of the sedimentation tank, the adjusting arm pushes the sliding shaft to slide upward along the inclined surface, thereby increasing the tension of the second cable.

9. A mine wastewater treatment process, characterized in that: The multi-stage treatment equipment for mine wastewater according to any one of claims 1 to 8 comprises the following steps: The mine wastewater to be treated is injected into the sedimentation tank; The rotation of the rotating frame is controlled, and the opening degree of the switch plate at the bottom end of the mud suction pipe is adjusted according to the thickness of the impurities deposited in the sedimentation tank, so that the impurities accumulated on the bottom surface of the sedimentation tank are sucked into the mud suction pipe and discharged from the mud discharge pipe after passing through the connecting pipe; wherein the opening degree of the switch plate is positively correlated with the thickness of the impurities deposited in the sedimentation tank.

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