A multi-stage filtering device for coal mine wastewater treatment

Abstract

The present invention discloses a multi-stage filtering device for coal mine wastewater treatment, belonging to the technical field of wastewater treatment; it includes a primary screening mechanism, an adjustment mechanism, and a stirring mechanism arranged in sequence from top to bottom; the wastewater is first filtered by the primary screening mechanism, and the filtered wastewater flows into the adjustment mechanism, and then enters the stirring mechanism through the adjustment mechanism and is mixed with the flocculant in the stirring mechanism; through the cooperation of the adjustment mechanism and the stirring mechanism, the present invention can perform adaptive adjustment according to the actual turbidity of the coal mine wastewater, thereby optimizing the treatment process, better creating favorable conditions for subsequent flocculation treatment, and improving the efficiency and effect of the overall wastewater treatment; at the same time, it can select different stirring speeds according to the turbidity of the coal mine wastewater, providing efficient and highly adaptable stirring support for the wastewater purification process.

Description

Technical Field

[0001] The present invention belongs to the technical field of wastewater treatment, and particularly relates to a multi-stage filtration device for treating coal mine wastewater. Background Art

[0002] During the process of coal mine mining and production, a large amount of wastewater is usually generated. This wastewater contains a large amount of sulfides and nitrides. If directly discharged, it will cause damage to the environment. Therefore, wastewater treatment is usually required. In addition to these harmful substances, this wastewater usually also carries a large amount of heavy metals and inorganic impurities, which need to be filtered before treatment.

[0003] The common current treatment method is to set a sedimentation tank when treating coal mine wastewater to precipitate these impurities. However, the existing treatment method only performs sedimentation through the addition of flocculants and then filtration, resulting in excessive impurities in the coal mine wastewater, large sediment accumulation, and inconvenience for subsequent solid-liquid separation. And due to the instability of coal mine wastewater, the turbidity of the coal mine wastewater generated during the coal mine mining process varies. Different dosages of flocculants need to be added according to different turbidity standards. Currently, there is a lack of effective accelerated mixing operations when adding flocculants, and it is impossible to stir at different speeds according to different degrees of turbidity pollution. Summary of the Invention

[0004] The present invention overcomes the deficiencies of the prior art and provides a multi-stage filtration device for treating coal mine wastewater; the present invention is realized through the following technical solutions:

[0005] A multi-stage filtration device for treating coal mine wastewater includes a primary screening mechanism, an adjustment mechanism, and a stirring mechanism arranged in sequence from top to bottom; the wastewater first passes through the primary screening mechanism and is filtered, and the filtered wastewater flows into the adjustment mechanism, enters the stirring mechanism after passing through the adjustment mechanism, and is mixed with the flocculant in the stirring mechanism.

[0006] The adjustment mechanism includes a fixed cylinder with an open top, a turbidity detector, a diversion pipe, a connecting rod, a baffle, and a push rod motor; the stirring mechanism includes a sedimentation cylinder with an open top and a stirring rod.

[0007] The detection rod of the turbidity detector extends into the primary screening mechanism to detect the turbidity of the filtered wastewater.

[0008] The diversion pipe includes a vertical pipe section and an inclined water tank section with an open top. The top of the vertical pipe section is connected to the primary screening mechanism. The filtered wastewater flows down through the vertical pipe section. The vertical pipe section is provided with a drainage port, and the drainage port is located above the inclined water tank section; the lowest water outlet of the inclined water tank section is located in the upper part of the fixed cylinder; the filtered wastewater flows down through the vertical pipe section, passes through the drainage port and the inclined water tank section, and flows into the fixed cylinder.

[0009] The output end of the push rod motor is connected with a baffle; the baffle is located at the drainage port and blocks the drainage port; the baffle is driven by the push rod motor to move to partially or fully open the drainage port, so as to adjust the flow rate of the waste water entering the fixed cylinder; the turbidity detector is electrically connected with the push rod motor through the controller;

[0010] The fixed cylinder is located above the sedimentation cylinder. A stirring rod is rotatably installed inside the fixed cylinder, and the bottom of the stirring rod extends into the sedimentation cylinder; a rotating blade is fixedly connected to the outer wall of the stirring rod located inside the fixed cylinder, and stirring support rods are fixedly connected to the outer wall of the stirring rod located inside the sedimentation cylinder at equal intervals in sequence. The flocculant is placed in the sedimentation cylinder; the filtered waste water flows into the sedimentation cylinder through the top of the fixed cylinder.

[0011] Further, a multi-stage filtering device for treating coal mine waste water further includes a separation box. An initial screening mechanism is installed inside the separation box. The initial screening mechanism includes a filtering cylinder. A water inlet is opened at the top of the filtering cylinder. A rotating rod is rotatably installed inside the filtering cylinder. Spiral blades are symmetrically fixedly connected to the outside of the rotating rod; a rotating motor is installed at one end of the filtering cylinder, and the output end of the rotating motor passes through the inside of the filtering cylinder and is fixedly connected to the rotating rod; a plurality of filtering holes are opened on the side wall and the bottom wall of the filtering cylinder; the filtering cylinder is communicated with the inside of the separation box through the filtering holes; the top of the vertical pipe section is communicated with the separation box.

[0012] Further, guide pipes are symmetrically and fixedly connected to the bottom of the separation box; the output end of the push rod motor is fixedly connected with a connecting rod, and baffles are fixedly connected to both ends of the connecting rod; the two baffles respectively block the drainage ports of the vertical pipe sections on the same side.

[0013] Further, a support plate is fixedly connected to the middle of the top of the sedimentation cylinder, and a support is fixedly connected to the top of the support plate; the push rod motor is installed on the top of the support, and the output end of the push rod motor faces upward and is fixedly connected with a horizontally arranged connecting rod.

[0014] Furthermore, the fixed cylinder is fixedly arranged in the middle of the support plate and is located inside the support.

[0015] Further, discharge pipes are symmetrically and fixedly connected to the inside of the bottom end of the separation box. The top of the discharge pipe is connected with the filtering cylinder, and through holes are opened at the connection between the filtering cylinder and the discharge pipe.

[0016] Furthermore, support columns are fixedly connected to the periphery of the separation box; a recycling box is installed between two support columns on the same side; the recycling box is located directly below the corresponding discharge pipe.

[0017] Further, a scraping plate is fixedly connected to the end of the stirring support rod far away from the stirring rod; a drain pipe is fixedly connected to the outside of the sedimentation cylinder, and a filter screen is installed inside the drain pipe.

[0018] Furthermore, the turbidity detector is installed on the top of the bracket, and the detection rod of the turbidity detector extends into the separation box.

[0019] Furthermore, a control panel is installed on the outer side of the separation box, and both the rotation motor and the push rod motor are electrically controlled and connected by the control panel.

[0020] The beneficial effects of the present invention relative to the prior art are as follows:

[0021] Through the cooperation of the filter cylinder, water inlet, rotating rod, spiral blade, filter hole, partition board, discharge pipe, rotating motor and recycling box, the present invention can carry out professional preliminary screening and filtration treatment on coal mine wastewater, effectively filter and separate impurities with larger particles in the wastewater, ensure the smooth progress of the subsequent treatment process and the preliminary improvement of the overall water quality. Through the cooperation of the diversion pipe, sedimentation cylinder, support plate, push rod motor, connecting rod, baffle, turbidity detector and detection rod, it can be adaptively adjusted according to the actual turbidity of the coal mine wastewater, so as to optimize the treatment process, better create favorable conditions for the subsequent flocculation treatment, and improve the efficiency and effect of the overall wastewater treatment; Through the cooperation of the fixed cylinder, stirring rod, rotating blade, stirring support rod, scraper and drain pipe, different stirring speeds can be selected according to the turbidity of the coal mine wastewater, providing efficient and adaptable stirring support for the wastewater purification process. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2 is the structural schematic diagram of the outside of the separation box of the present invention;

[0024] Figure 3 is the structural schematic diagram of the preliminary screening mechanism of the present invention;

[0025] Figure 4 is the structural schematic diagram of the adjustment mechanism of the present invention;

[0026] Figure 5 is the structural schematic diagram of the stirring mechanism of the present invention.

[0027] In the figure: 1, separation box; 2, support column; 3, filter cylinder; 4, water inlet; 5, rotating rod; 6, spiral blade; 7, filter hole; 8, partition board; 9, discharge pipe; 10, recycling box; 11, rotating motor; 12, bracket; 13, diversion pipe; 131, vertical pipe section; 132, inclined water trough section; 14, sedimentation cylinder; 15, support plate; 16, push rod motor; 17, connecting rod; 18, baffle; 19, turbidity detector; 20, detection rod; 21, fixed cylinder; 22, stirring rod; 23, rotating blade; 24, stirring support rod; 25, scraper; 26, drain pipe; 27, control panel. Detailed implementation mode

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail in conjunction with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The technical solutions of the present invention will be described in detail below in conjunction with embodiments and drawings, but the protection scope is not limited by this.

[0029] See Figures 1 to 5 , this embodiment proposes a multi-stage filtering device for treating coal mine wastewater, including:

[0030] A separation box 1, a primary screening mechanism, an adjustment mechanism and a stirring mechanism; support columns 2 are fixedly connected to the periphery of the separation box 1;

[0031] A primary screening mechanism is installed inside the separation box 1. The primary screening mechanism includes a filter cylinder 3. Partition plates 8 are symmetrically and fixedly connected inside the separation box 1. The filter cylinder 3 is supported by the partition plates 8 to make the internal structure of the filter cylinder 3 more stable during operation. A water inlet 4 is opened at the top of the filter cylinder 3. A rotating rod 5 is rotatably installed inside the filter cylinder 3. Spiral blades 6 are symmetrically and fixedly connected to the outside of the rotating rod 5. A rotating motor 11 is installed at one end of the filter cylinder 3, and the output end of the rotating motor 11 passes through the inside of the filter cylinder 3 and is fixedly connected to the rotating rod 5. A plurality of filter holes 7 are opened on the side wall and bottom wall of the filter cylinder 3. Discharge pipes 9 are symmetrically and fixedly connected to the inside of the bottom end of the separation box 1. The top of the discharge pipes 9 is connected to the filter cylinder 3, and a through hole is opened at the connection between the filter cylinder 3 and the discharge pipes 9. A recycling box 10 is installed between two support columns 2 on the same side; the recycling box 10 is located directly below the corresponding discharge pipe 9. Start the rotating motor 11. The rotating motor 11 drives the rotating rod 5 and the spiral blades 6 connected thereto to rotate. The rotation of the spiral blades 6 cooperates with the filter holes 7 to filter out larger particles in the wastewater and transport them to the discharge pipes 9, and then the sundries are discharged to the recycling box 10 through the discharge pipes 9.

[0032] An adjustment mechanism is arranged below the separation box 1, and a stirring mechanism is installed below the adjustment mechanism; the adjustment mechanism includes a fixed cylinder 21 with an open top and a push rod motor 16; the stirring mechanism includes a cylindrical precipitation cylinder 14.

[0033] The top of the precipitation cylinder 14 is an open structure. A support plate 15 is fixedly connected to the middle of the top of the precipitation cylinder 14, and a support 12 is fixedly connected to the top of the support plate 15; a push rod motor 16 is installed on the top of the support 12. The output end of the push rod motor 16 faces upward and is fixedly connected to a horizontally arranged connecting rod 17. Baffles 18 are fixedly connected to both ends of the connecting rod 17; a turbidity detector 19 is also installed on the top of the support 12. A detection rod 20 is installed on the top of the turbidity detector 19, and the detection rod 20 extends into the separation box 1.

[0034] The bottom of the separation box 1 is symmetrically and fixedly connected with diversion pipes 13; the diversion pipes 13 are in an L-shaped structure, including a connected vertical pipe section 131 and an inclined water trough section 132 with an open top. The top of the vertical pipe section 131 is communicated with the inner wall of the separation box 1. A drain port is arranged on the inner side wall of the vertical pipe section 131, and the drain port is located above the inclined water trough section 132; the baffle 18 is located at the drain port of the vertical pipe section 131. When the output end of the push rod motor 16 is at the bottommost position, the baffle 18 completely blocks the drain port.

[0035] A fixed cylinder 21 is fixedly arranged in the middle of the support plate 15, and the fixed cylinder 21 is located inside the support 12; the lowest outlet of the inclined water trough section 132 is located above the upper part of the fixed cylinder 21; a stirring rod 22 is rotatably installed inside the fixed cylinder 21, and the bottom of the stirring rod 22 extends into the precipitation cylinder 14. A rotating blade 23 is fixedly connected to the outer wall of the stirring rod 22 located inside the fixed cylinder 21. Stirring support rods 24 are fixedly connected to the outer wall of the stirring rod 22 located inside the precipitation cylinder 14 at equal intervals in sequence. The other end of the stirring support rod 24 is fixedly connected to a scraper 25.

[0036] The turbidity detector 19 detects the turbidity of the wastewater inside the separation box 1 according to the detection rod 20, and transmits the information to the push rod motor 16 through the controller. At this time, the push rod motor 16 operates. The push rod motor 16 operates to drive the baffle 18 to lift upward through the connecting rod 17, and the drain port is opened. The filtered wastewater in the separation box 1 flows into the inclined water trough section 132 from the drain port through the vertical pipe section 131 of the diversion pipe 13, and then flows into the fixed cylinder 21 through the inclined water trough section 132; when the wastewater flows into the fixed cylinder 21, it impacts the rotating blade 23 to drive the rotating blade 23 to rotate. The rotation of the rotating blade 23 drives the stirring rod 22 and the stirring support rods 24 to rotate. A flocculant is placed in the precipitation cylinder 14, and the wastewater flows into the precipitation cylinder 14 from the top of the precipitation cylinder 14 through the fixed cylinder 21. The rotation of the stirring support rods 24 accelerates the mixing of the flocculant and the wastewater.

[0037] The lifting amplitude of the baffle 18 plays a role in regulating the wastewater flow rate; when the turbidity detector 19 detects high turbidity of the wastewater, the extended length of the output end of the push rod motor 16 increases, and thus the lifting amplitude of the baffle 18 increases, so that the opening degree of the drain outlet of the vertical pipe section 131 increases, and the wastewater flow rate increases. At this time, the rotation speed of the rotary blade 23 increases driven by the large-flow wastewater, and then the rotation speed of the stirring support rod 24 increases. The rotation of the stirring support rod 24 accelerates the mixing of the flocculant and the wastewater, and the rapid stirring allows the flocculant to be quickly and evenly dispersed into the wastewater, ensuring that the flocculant and the wastewater can fully contact; on the contrary, when the turbidity detector 19 detects low turbidity of the wastewater, the extended length of the output end of the push rod motor 16 decreases, and thus the lifting amplitude of the baffle 18 decreases, so that the opening degree of the drain outlet of the vertical pipe section 131 decreases, and the wastewater flow rate decreases. At this time, the rotation speed of the rotary blade 23 decreases, and then the rotation speed of the stirring support rod 24 decreases. The slow stirring can ensure that the suspended substances in the wastewater have enough time to aggregate and form larger flocs, and the stirring speed is reduced to maintain the stability of the flocculent.

[0038] A drain pipe 26 is fixedly connected to the outside of the sedimentation cylinder 14, and a filter screen is installed inside the drain pipe 26.

[0039] A control panel 27 is installed on the outside of the separation box 1, and both the rotation motor 11 and the push rod motor 16 are electrically controlled and connected by the control panel 27.

[0040] The working principle of a multi-stage filtration device for treating coal mine wastewater proposed in this embodiment is as follows:

[0041] When the device needs to be used, first inject the wastewater into the filter cylinder 3 through the water inlet 4, and then start the rotation motor 11. The operation of the rotation motor 11 drives the spiral blade 6 to rotate. The rotation of the spiral blade 6 cooperates with the filter holes 7 to filter out the larger particles in the wastewater and transport them to the discharge pipe 9, and then discharge the sundries into the recycling box 10 through the discharge pipe 9. The wastewater after filtration enters the separation box 1 through the filter holes 7; at the same time, the turbidity detector 19 detects the turbidity of the wastewater in the separation box 1 according to the detection rod 20 and transmits the information to the push rod motor 16. At this time, the push rod motor 16 provides an appropriate operating power according to the turbidity. The operation of the push rod motor 16 drives the baffle 18 to lift upward through the connecting rod 17, and partially or completely opens the drain outlet of the vertical pipe section 131; the filtered wastewater in the separation box 1 flows through the drain outlet into the inclined water tank section 132 and then into the fixed cylinder 21; and then flows to the inside of the sedimentation cylinder 14 from the top of the fixed cylinder 21; when the wastewater flows into the fixed cylinder 21, it impacts the rotary blade 23 to drive the rotary blade 23 to rotate. The rotation of the rotary blade 23 drives the stirring rod 22 and the stirring support rod 24 to rotate, and the rotation of the stirring support rod 24 accelerates the mixing of the flocculant and the wastewater.

[0042] The baffle 18 plays a role in regulating the wastewater flow rate. When the turbidity of the wastewater is high, the lifting amplitude of the baffle 18 increases, the opening amplitude of the drain outlet increases, the wastewater flow rate increases, and correspondingly, the rotation speed of the stirring support rod 24 increases; rapid stirring allows the flocculant to be quickly and evenly dispersed into the wastewater, ensuring sufficient contact between the reagent and the wastewater. High-turbidity wastewater often contains a large number of tiny particles that are difficult to settle, and rapid stirring can more effectively promote the aggregation of these particles, thereby achieving the best flocculation effect.

[0043] When the turbidity of the wastewater is low, the lifting amplitude of the baffle 18 decreases, the opening amplitude of the drain outlet decreases, the wastewater flow rate decreases, and correspondingly, the rotation speed of the stirring support rod 24 decreases; the suspended solid content in low-turbidity wastewater is relatively small, and slow stirring can ensure that these suspended solids have enough time to aggregate and form larger flocs, reducing the stirring speed to maintain the stability of the flocculent and preventing it from being broken up due to excessive stirring, thereby facilitating subsequent precipitation and separation operations.

[0044] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are limited to this. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the patent protection scope determined by the claims submitted for the present invention.

Claims

1. A multi-stage filtration device for treating coal mine wastewater, characterized in that, It includes a primary screening mechanism, an adjustment mechanism, and a stirring mechanism arranged in sequence from top to bottom; the wastewater first passes through the primary screening mechanism and is filtered, and the filtered wastewater flows into the adjustment mechanism, enters the stirring mechanism through the adjustment mechanism, and is mixed with the flocculant in the stirring mechanism; The adjustment mechanism includes a fixed cylinder (21) with an open top, a turbidity detector (19), a diversion pipe (13), a connecting rod (17), a baffle (18), and a push rod motor (16); the stirring mechanism includes a sedimentation cylinder (14) with an open top and a stirring rod (22); The detection rod (20) of the turbidity detector (19) extends into the primary screening mechanism to detect the turbidity of the filtered wastewater; The diversion pipe (13) includes a vertical pipe section (131) and an inclined water trough section (132) with an open top. The top of the vertical pipe section (131) is connected to the primary screening mechanism. The vertical pipe section (131) is provided with a drain port, and the drain port is located above the inclined water trough section (132); the lowest outlet of the inclined water trough section (132) is located in the upper part of the fixed cylinder (21); the filtered wastewater flows down through the vertical pipe section (131), passes through the drain port and the inclined water trough section (132), and flows into the fixed cylinder (21); The output end of the push rod motor (16) is connected to a baffle (18); the baffle (18) is located at the drain port and blocks the drain port; the baffle (18) is driven by the push rod motor (16) to move to partially or fully open the drain port to adjust the flow rate of the wastewater entering the fixed cylinder (21); the turbidity detector (19) is electrically connected to the push rod motor (16) through a controller; The fixed cylinder (21) is located above the sedimentation cylinder (14). A stirring rod (22) is rotatably installed inside the fixed cylinder (21), and the bottom of the stirring rod (22) extends into the sedimentation cylinder (14); a rotating blade (23) is fixedly connected to the outer wall of the stirring rod (22) located inside the fixed cylinder (21), and stirring support rods (24) are fixedly connected to the outer wall of the stirring rod (22) located inside the sedimentation cylinder (14) at equal intervals in sequence. The flocculant is placed in the sedimentation cylinder (14), and the filtered wastewater flows into the sedimentation cylinder (14) through the top of the fixed cylinder (21).

2. The multi-stage filtration device for treating coal mine wastewater according to claim 1, wherein, It further includes a separation box (1). The primary screening mechanism is installed inside the separation box (1). The primary screening mechanism includes a filter cylinder (3). An inlet (4) is opened at the top of the filter cylinder (3). A rotating rod (5) is rotatably installed inside the filter cylinder (3). Spiral blades (6) are symmetrically fixedly connected to the outside of the rotating rod (5); a rotating motor (11) is installed at one end of the filter cylinder (3), and the output end of the rotating motor (11) passes through the inside of the filter cylinder (3) and is fixedly connected to the rotating rod (5); a plurality of filter holes (7) are opened on the side wall and the bottom wall of the filter cylinder (3); the filter cylinder (3) is communicated with the inside of the separation box (1) through the filter holes (7); the top of the vertical pipe section (131) is connected to the separation box (1).

3. The multi-stage filtration device for treating coal mine wastewater according to claim 2, wherein, The bottom of the separation box (1) is symmetrically and fixedly connected with a diversion pipe (13); the output end of the push rod motor (16) is fixedly connected with a connecting rod (17), and baffles (18) are fixedly connected to both ends of the connecting rod (17); the two baffles (18) respectively block the drainage ports of the vertical pipe sections (131) on the same side.

4. A multi-stage filtration device for treating coal mine wastewater according to claim 3, characterized in that, A support plate (15) is fixedly connected to the middle of the top of the precipitation cylinder (14), and a support (12) is fixedly connected to the top of the support plate (15); the push rod motor (16) is installed on the top of the support (12), and the output end of the push rod motor (16) faces upward and is fixedly connected with a horizontally arranged connecting rod (17).

5. A multi-stage filtration device for treating coal mine wastewater according to claim 4, characterized in that, The fixed cylinder (21) is fixedly arranged in the middle of the support plate (15), and the fixed cylinder (21) is located inside the support (12).

6. The multi-stage filtration device for coal mine wastewater treatment according to claim 2, characterized in that, The discharge pipes (9) are symmetrically and fixedly connected to the inner part of the bottom end of the separation box (1), the top of the discharge pipes (9) is connected with the filter cylinder (3), and through holes are formed at the connection between the filter cylinder (3) and the discharge pipes (9).

7. The multi-stage filtration device for coal mine wastewater treatment according to claim 6, characterized in that, Support columns (2) are fixedly connected to the periphery of the separation box (1); a recycling box (10) is installed between two support columns (2) on the same side; the recycling box (10) is located directly below the corresponding discharge pipe (9).

8. A multi-stage filtration device for treating coal mine wastewater according to claim 1, characterized in that, A scraping plate (25) is fixedly connected to the end of the stirring support rod (24) far away from the stirring rod (22); a drain pipe (26) is fixedly connected to the outside of the precipitation cylinder (14), and a filter screen is installed inside the drain pipe (26).

9. The multi-stage filtration device for treating coal mine wastewater according to claim 4, wherein, The turbidity detector (19) is installed on the top of the support (12), and the detection rod (20) of the turbidity detector (19) extends into the separation box (1).

10. A multi-stage filtration device for coal mine wastewater treatment according to claim 2, characterized in that, A control panel (27) is installed on the outside of the separation box (1), and both the rotation motor (11) and the push rod motor (16) are electrically controlled and connected by the control panel (27).

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