Mine water recharge pretreatment device

Abstract

The invention discloses a mine water recharge pretreatment device which comprises a supporting plate, the outer side of the top of the supporting plate is sleeved with a shell, one side of the top of the shell is fixedly connected with a supporting frame, one side of the supporting frame is fixedly connected with a box body, and the center axis of the top of the box body is fixedly connected with a first motor; and the output end of the first motor is fixedly connected with a first stirring roller. Through the staged stirring design and the rapid mixing stage, a flocculating agent is in full contact with mine water, charge neutralization is completed, flocs are promoted to collide and agglomerate into large and dense flocs in the slow flocculation stage, the flocs are prevented from being damaged by strong turbulence, and the flocculation effect is improved; secondly, the multi-shell design is matched with switching of the flow guide pipes, materials can be processed in parallel, the hydraulic retention time is flexibly adjusted, and the processing efficiency is improved; water and sediments are separated through a mechanical structure after sedimentation, operation is convenient, the sediments are treated in a centralized mode, the occupied area of the device is small, and the space utilization rate is high.

Description

Technical Field

[0001] This invention relates to the field of mine water reinjection pretreatment technology, specifically to a mine water reinjection pretreatment device. Background Technology

[0002] With the continuous expansion of coal mining depth and scale, the discharge of mine water is increasing year by year. Direct discharge not only wastes water resources but also pollutes the surrounding water environment. Therefore, mine water reinjection and reuse has become a key approach to water resource recycling in the coal industry. Before reinjection, mine water needs to undergo pretreatment to remove suspended solids, colloidal particles, dissolved salts, and other impurities to prevent clogging of formation pores after reinjection, which would affect the reinjection effect and formation stability.

[0003] The core process of mine water reinjection pretreatment is flocculant addition, mixing reaction, sedimentation, and filtration. The mixing reaction effect and sedimentation efficiency directly determine the overall efficiency. Existing technologies often integrate rapid mixing and slow flocculation into the same cylinder, switching the operating conditions through stirring or diversion. This has obvious drawbacks: First, the strong turbulence of rapid mixing easily destroys the flocs formed by slow flocculation, resulting in small floc particle size and insufficient density. Second, the hydraulic residence time of the two stages interferes with each other and cannot be flexibly adjusted according to water quality, affecting the sufficiency and efficiency of flocculation. In the sedimentation stage, existing sedimentation tanks are mostly single-cavity tanks. Due to insufficient reaction in the early stage, the floc settling performance is poor, requiring large volume and long sedimentation time. This results in large equipment footprint and low space utilization, making it difficult to meet the needs of continuous and efficient pretreatment. The problem is more prominent in site-constrained scenarios such as underground mines, seriously restricting large-scale application and efficiency improvement. Therefore, we propose a mine water reinjection pretreatment device. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a mine water reinjection pretreatment device with high efficiency. This device solves the problems inherent in existing technologies that integrate rapid mixing and slow flocculation into a single cylinder, switching between operating conditions via stirring or flow guidance. These limitations include: firstly, the strong turbulence of rapid mixing easily destroys the flocs formed by slow flocculation, resulting in small floc size and insufficient density; secondly, the hydraulic residence times of the two stages interfere with each other, making it impossible to flexibly adjust according to water quality, affecting the sufficiency and efficiency of flocculation. In the sedimentation stage, existing sedimentation tanks are mostly single-chamber structures, resulting in poor floc settling performance due to insufficient initial reaction, requiring large volumes and long sedimentation times. This leads to large footprints, low space utilization, and difficulty in meeting the requirements for continuous and efficient pretreatment. These problems are even more pronounced in site-constrained environments such as underground mines, severely hindering large-scale application and efficiency improvement.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mine water reinjection pretreatment device, comprising a support plate, a shell sleeved on the outer side of the top of the support plate, a support frame fixedly connected to one side of the top of the shell, a box fixedly connected to one side of the support frame, a first motor fixedly connected to the central shaft at the top of the box, a first stirring roller fixedly connected to the output end of the first motor, a material box fixedly connected to the right side of the box, a material pump connected to one side of the material box, a discharge pipe connected to one side of the material pump, and a discharge pipe connected to one side of the box, a second motor fixedly connected to one side of the support frame, a drive gear fixedly connected to the output end of the second motor, a driven gear meshing with one side of the drive gear, a second stirring roller fixedly connected to the bottom of the driven gear, a first electrically controlled valve fixedly connected to the central shaft at the bottom of the box, a guide pipe connected to the bottom of the first electrically controlled valve via a rotary joint, and a third motor disposed at the bottom of the left side of the box.

[0006] Preferably, an electric telescopic rod is fixedly connected to the bottom of the support plate, an adjusting plate is fixedly connected to one side of the electric telescopic rod, a second electric control valve is fixedly connected to one side of the adjusting plate, a perforated pipe is connected to the top of the second electric control valve, and a barrier mesh plate is fixedly connected to the top of the perforated pipe.

[0007] Preferably, a water injection pipe is connected to the front side of the top of the box, and the surface of the second stirring roller is movably connected to the support frame via a bearing.

[0008] Preferably, a third electrically controlled valve is connected to the bottom of the outer side of the housing, and a PLC controller is fixedly connected to the front side of the top of the support plate.

[0009] Preferably, a fixing base is fixedly connected to one side of the third motor, and one side of the fixing base is fixedly connected to the housing.

[0010] Preferably, a synchronous pulley is fixedly connected to both the output end of the third motor and the surface of the guide tube, and a synchronous belt is engaged with the surface of the synchronous pulley.

[0011] Preferably, a through hole is provided at the bottom of the inner cavity of the housing, and a sealing ring is fixedly connected to the inner cavity of the through hole.

[0012] Preferably, the number of housings is six, and the six housings are evenly distributed on the top of the support plate.

[0013] Preferably, a liquid level sensor is fixedly connected to the rear side of the top of the inner cavity of the material tank, the material pump is a metering pump, and the PLC controller is bidirectionally electrically connected to the liquid level sensor.

[0014] Compared with the prior art, the present invention provides a mine water reinjection pretreatment device, which has the following beneficial effects: 1. In the operation of this invention, the water to be treated is discharged into the inner cavity of the tank through the water injection pipe. Then, the flow rate and the working time of the first motor are set through the PLC controller. Subsequently, the material pump is started to extract the flocculant from the inner cavity of the material tank and discharge it into the inner cavity of the material tank through the discharge pipe. At the same time, the first motor is started, which drives the first stirring roller to rotate at high speed, agitating the water and flocculant, allowing the flocculant to spread quickly and evenly in the mine water, fully contacting the impurity particles and completing the charge neutralization. Then, the first motor stops working, and the third motor is started. Through the cooperation of the synchronous pulley and synchronous belt, the operation of the third motor will cause the guide pipe to enter... The flow meter rotates, adjusting the discharge end of the guide pipe to the corresponding shell. Then, the first solenoid valve opens, allowing the material in the inner cavity of the box to be discharged into the corresponding shell. Afterward, the first solenoid valve closes, and water and flocculant can be added again for treatment. At the same time, the working time of the second motor is set and the second motor is started. The second motor drives the drive gear to rotate, which in turn drives the driven gear to rotate. The driven gear drives the second stirring roller to rotate, and the second stirring roller slowly stirs the material, providing the power for the collision and aggregation of flocs, causing them to grow into dense flocs with sufficient particle size. Then, the second motor stops working, and the material settles.

[0015] 2. This invention uses a PLC controller to set the interval between the second motor stopping and the electric telescopic rod starting. After the material settles, the electric telescopic rod will start, moving the adjusting plate, which in turn moves the second electrically controlled valve. The second electrically controlled valve moves the perforated tube, which in turn moves the barrier screen, causing the outer side of the barrier screen to descend until it contacts the inner wall of the housing. Then, the third electrically controlled valve is opened to drain the water. Subsequently, the second electrically controlled valve is opened again, and the sediment is discharged through the perforated tube and the second electrically controlled valve, facilitating centralized treatment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-view perspective. Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention from a second perspective. Figure 3 This is a three-dimensional structural diagram of the present invention from a third-view perspective; Figure 4 This is a schematic cross-sectional view of the box structure of the present invention; Figure 5 This is a schematic cross-sectional view of the housing structure of the present invention.

[0017] In the diagram: 1. Support plate; 2. Shell; 3. Support frame; 4. Box; 5. First motor; 6. First stirring roller; 7. Material box; 8. Material pump; 9. Discharge pipe; 10. Second motor; 11. Drive gear; 12. Driven gear; 13. Second stirring roller; 14. First electric control valve; 15. Guide pipe; 16. Fixed base; 17. Third motor; 18. Synchronous pulley; 19. Synchronous belt; 20. Electric telescopic rod; 21. Adjusting plate; 22. Second electric control valve; 23. Perforated pipe; 24. Barrier mesh plate; 25. PLC controller; 26. Third electric control valve. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Secondly, the term "one embodiment" or "example" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearance of an embodiment in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0020] Example 1: Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, this invention provides a mine water reinjection pretreatment device, including a support plate 1, a shell 2 sleeved on the outer side of the top of the support plate 1, a support frame 3 fixedly connected to one side of the top of the shell 2, a box 4 fixedly connected to one side of the support frame 3, a first motor 5 fixedly connected to the central shaft at the top of the box 4, a first stirring roller 6 fixedly connected to the output end of the first motor 5, a material box 7 fixedly connected to the right side of the box 4, a material pump 8 connected to one side of the material box 7, a discharge pipe 9 connected to one side of the material pump 8, and a discharge pipe 9 connected to one side of the box 4, a second motor 10 fixedly connected to one side of the support frame 3, a drive gear 11 fixedly connected to the output end of the second motor 10, a driven gear 12 meshing with one side of the drive gear 11, and a second stirring roller 13 fixedly connected to the bottom of the driven gear 12. A first electrically controlled valve 14 is fixedly connected to the central axis at the bottom of body 4. The bottom of the first electrically controlled valve 14 is connected to a guide pipe 15 via a rotary joint. A third motor 17 is installed at the bottom left side of body 4. A water injection pipe is connected to the front side of the top of body 4. The surface of the second stirring roller 13 is movably connected to the support frame 3 via a bearing. A third electrically controlled valve 26 is connected to the bottom outside of shell 2. A PLC controller 25 is fixedly connected to the front side of the top of support plate 1. A fixed seat 16 is fixedly connected to one side of the third motor 17. One side of the fixed seat 16 is fixedly connected to body 4. A synchronous pulley 18 is fixedly connected to the output end of the third motor 17 and the surface of the guide pipe 15. A synchronous belt 19 meshes with the surface of the synchronous pulley 18. There are six shells 2, which are evenly distributed on the top of support plate 1.

[0021] The specific function of this technical solution is as follows: During operation, the water to be treated is discharged into the inner cavity of the tank 4 through the water injection pipe. Then, the flow rate and the working time of the first motor 5 are set through the PLC controller 25. Subsequently, the material pump 8 is started to extract the flocculant from the inner cavity of the material tank 7 and discharge it into the inner cavity of the material tank 7 through the discharge pipe 9. At the same time, the first motor 5 is started, which drives the first stirring roller 6 to rotate at high speed, agitating the water and flocculant, allowing the flocculant to spread quickly and evenly in the mine water, fully contacting the impurity particles and completing the charge neutralization. Then, the first motor 5 stops working, and the third motor 17 is started. Through the cooperation of the synchronous pulley 18 and the synchronous belt 19, the operation of the third motor 17 will cause the guide pipe 15 to enter... The flow is rotated, and the discharge end of the guide pipe 15 is adjusted to the corresponding shell 2. Then the first solenoid valve 14 is opened, so that the material in the inner cavity of the box 4 is discharged into the corresponding shell 2. Then the first solenoid valve 14 is closed, and water and flocculant can be added again for treatment. At the same time, the working time of the second motor 10 is set and the second motor 10 is started. The second motor 10 drives the drive gear 11 to rotate, the drive gear 11 drives the driven gear 12 to rotate, and the driven gear 12 drives the second stirring roller 13 to rotate. The second stirring roller 13 slowly stirs the material, providing the power for the collision and aggregation of flocs, so that they grow into dense flocs with sufficient particle size. Then the second motor 10 is stopped, and the material settles.

[0022] Example 2: Based on Embodiment 1, the present invention is as follows: Figure 3 As shown, an electric telescopic rod 20 is fixedly connected to the bottom of the support plate 1, an adjusting plate 21 is fixedly connected to one side of the electric telescopic rod 20, a second electric control valve 22 is fixedly connected to one side of the adjusting plate 21, a perforated pipe 23 is connected to the top of the second electric control valve 22, and a barrier mesh plate 24 is fixedly connected to the top of the perforated pipe 23; a through hole is opened at the bottom of the inner cavity of the housing 2, and a sealing ring is fixedly connected to the inner cavity of the through hole.

[0023] The specific function of this technical solution is as follows: By setting the interval between the stop of the second motor 10 and the operation of the electric telescopic rod 20 through the PLC controller 25, after the material settles, the electric telescopic rod 20 will be activated. The electric telescopic rod 20 will drive the adjusting plate 21 to move, the adjusting plate 21 will drive the second solenoid valve 22 to move, the second solenoid valve 22 will drive the perforated tube 23 to move, and the perforated tube 23 will drive the barrier mesh plate 24 to move, so that the outer side of the barrier mesh plate 24 will descend to contact the inner wall of the housing 2. Then the third solenoid valve 26 will be opened to discharge the water, and then the second solenoid valve 22 will be opened again to discharge the sediment through the perforated tube 23 and the second solenoid valve 22, which is convenient for centralized treatment.

[0024] Working principle: During operation, the water to be treated is discharged into the inner cavity of the tank 4 through the water injection pipe. Then, the flow rate and the working time of the first motor 5 are set through the PLC controller 25. Subsequently, the material pump 8 is started to extract the flocculant from the inner cavity of the material tank 7 and discharge it into the inner cavity of the material tank 7 through the discharge pipe 9. At the same time, the first motor 5 is started, which drives the first stirring roller 6 to rotate at high speed, agitating the water and flocculant, allowing the flocculant to spread quickly and evenly in the mine water, fully contacting the impurity particles and completing the charge neutralization. Then, the first motor 5 stops working, and the third motor 17 is started. Through the cooperation of the synchronous pulley 18 and the synchronous belt 19, the operation of the third motor 17 causes the guide pipe 15 to rotate. Adjust the discharge end of the guide pipe 15 to the corresponding shell 2, and then open the first solenoid valve 14 to discharge the material in the inner cavity of the box 4 into the corresponding shell 2. Then close the first solenoid valve 14, and water and flocculant can be added again for treatment. At the same time, set the working time of the second motor 10 and start the second motor 10. The second motor 10 drives the drive gear 11 to rotate, the drive gear 11 drives the driven gear 12 to rotate, and the driven gear 12 drives the second stirring roller 13 to rotate. The second stirring roller 13 slowly stirs the material to provide the power for the collision and aggregation of flocs, so that they grow into dense flocs with sufficient particle size. Then stop the operation of the second motor 10, and then the material settles. The PLC controller 25 sets the interval between the stop of the second motor 10 and the operation of the electric telescopic rod 20. After the material settles, the electric telescopic rod 20 will be activated, driving the adjusting plate 21 to move. The adjusting plate 21 drives the second solenoid valve 22 to move, which in turn drives the perforated tube 23 to move. The perforated tube 23 then drives the barrier screen 24 to move, causing the outer side of the barrier screen 24 to descend until it contacts the inner wall of the housing 2. Subsequently, the third solenoid valve 26 is opened to drain the water. Then, the second solenoid valve 22 is opened again, and the sediment is discharged through the perforated tube 23 and the second solenoid valve 22 for convenient centralized treatment.

[0025] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any device-plus-function clause is intended to cover the structure described herein for performing the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0026] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A mine water reinjection pretreatment device, comprising a support plate (1), characterized in that: A housing (2) is fitted onto the outer side of the top of the support plate (1). A support frame (3) is fixedly connected to one side of the top of the housing (2). A box (4) is fixedly connected to one side of the support frame (3). A first motor (5) is fixedly connected to the central shaft at the top of the box (4). A first stirring roller (6) is fixedly connected to the output end of the first motor (5). A material box (7) is fixedly connected to the right side of the box (4). A material pump (8) is connected to one side of the material box (7). A discharge pipe (9) is connected to one side of the material pump (8). One side of the discharge pipe (9) is connected to the box. (4) Connected, a second motor (10) is fixedly connected to one side of the support frame (3), a drive gear (11) is fixedly connected to the output end of the second motor (10), a driven gear (12) is meshed on one side of the drive gear (11), a second stirring roller (13) is fixedly connected to the bottom of the driven gear (12), a first electric control valve (14) is fixedly connected to the central shaft at the bottom of the box (4), a guide pipe (15) is connected to the bottom of the first electric control valve (14) through a rotary joint, and a third motor (17) is provided at the bottom of the left side of the box (4).

2. The mine water reinjection pretreatment device according to claim 1, characterized in that: An electric telescopic rod (20) is fixedly connected to the bottom of the support plate (1). An adjusting plate (21) is fixedly connected to one side of the electric telescopic rod (20). A second electric control valve (22) is fixedly connected to one side of the adjusting plate (21). A perforated pipe (23) is connected to the top of the second electric control valve (22). A barrier mesh plate (24) is fixedly connected to the top of the perforated pipe (23).

3. The mine water reinjection pretreatment device according to claim 1, characterized in that: A water injection pipe is connected to the front side of the top of the box (4), and the surface of the second stirring roller (13) is movably connected to the support frame (3) through a bearing.

4. The mine water reinjection pretreatment device according to claim 1, characterized in that: The bottom of the outer side of the housing (2) is connected to a third electric control valve (26), and a PLC controller (25) is fixedly connected to the front side of the top of the support plate (1).

5. The mine water reinjection pretreatment device according to claim 1, characterized in that: A fixed base (16) is fixedly connected to one side of the third motor (17), and one side of the fixed base (16) is fixedly connected to the housing (4).

6. The mine water reinjection pretreatment device according to claim 1, characterized in that: The output end of the third motor (17) and the surface of the guide tube (15) are both fixedly connected to a synchronous pulley (18), and a synchronous belt (19) is engaged on the surface of the synchronous pulley (18).

7. The mine water reinjection pretreatment device according to claim 1, characterized in that: The bottom of the inner cavity of the housing (2) is provided with a through hole, and a sealing ring is fixedly connected to the inner cavity of the through hole.

8. The mine water reinjection pretreatment device according to claim 1, characterized in that: The number of shells (2) is six, and the six shells (2) are evenly distributed on the top of the support plate (1).

9. A mine water reinjection pretreatment device according to claim 4, characterized in that: A liquid level sensor is fixedly connected to the rear side of the top of the inner cavity of the material box (7), the material pump (8) is a metering pump, and the PLC controller (25) is bidirectionally electrically connected to the liquid level sensor.

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