Coal mine production sewage treatment equipment

Abstract

The application relates to the technical field of sewage treatment equipment, and discloses coal mine production sewage treatment equipment, which comprises a conveying groove, the heights of two ends of the conveying groove are different, a liquid storage tank is fixedly installed at the top of the conveying groove, a fixing seat is fixedly connected to the bottom of the liquid storage tank, a distribution pipe is arranged at the bottom of the liquid storage tank, a liquid pump is fixedly installed at the bottom of the liquid storage tank, and a plurality of shunt pipes are fixedly connected to the bottom of the distribution pipe. The sewage is conveyed through the conveying groove, the opening degree of a proportional valve is adjusted according to the liquid level in the conveying groove by cooperation of a floating block, the flow of mixed flocculant is adjusted, meanwhile, the floating block is driven to move the adjusting ring to adjust the opening state of the through hole, the through hole above the liquid level is kept closed, sufficient flocculant is mixed in the corresponding height range of the sewage, the dispersion efficiency is improved, and the matching degree of the flocculant quantity and the sewage flow is improved.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment equipment technology, and in particular to a wastewater treatment equipment for coal mine production. Background Technology

[0002] During the mining and washing processes in coal mines, wastewater treatment equipment is needed to separate coal slurry from water and purify the wastewater. Existing wastewater treatment equipment includes bar screens and sedimentation tanks. Coal mine production wastewater is transported to the bar screens via a lift pump, and then transported to the sedimentation tanks via a drain pipe. An appropriate amount of flocculant is added to the sedimentation tanks to cause the coal particles to flocculate and settle. The sediment is then discharged via a sludge pump, and the treated water is recycled through a return trough at the top of the sedimentation tank for reuse in subsequent coal mine production operations.

[0003] However, in traditional wastewater treatment equipment, flocculants are dispersed in the wastewater at the top of the sedimentation tank, and coal powder forms flocs in a static state. This causes subsequent flocculants to be blocked by the already formed floc layer, affecting the dispersion efficiency of the flocculants. Furthermore, high-speed stirring of coal mine wastewater can cause strong shear forces to break up the tiny flocs, which can easily lead to poor floc growth or floc breakage. Therefore, it is necessary to set up an additional stirring tank to carry out intermittent flocculant and coal mine wastewater dispersion operations, which increases the production cost of coal mine wastewater and affects the continuity of wastewater treatment. Summary of the Invention

[0004] This application proposes a wastewater treatment device for coal mine production, which has the advantages of improving the flocculant dispersion efficiency and dynamically adjusting the addition amount, in order to solve the problem that the flocs generated first during the process of adding flocculants into the sedimentation tank affect the subsequent flocculant dispersion efficiency.

[0005] To achieve the above objectives, this application adopts the following technical solution: a coal mine wastewater treatment device, including a conveying trough, the two ends of the conveying trough being at different heights, a liquid storage tank being fixedly installed on the top of the conveying trough, a fixed base being fixedly connected to the bottom of the liquid storage tank, a distribution pipe being provided at the bottom of the liquid storage tank, a liquid pump being fixedly installed at the bottom of the liquid storage tank, a plurality of diversion pipes being fixedly connected to the bottom of the distribution pipe, a plurality of through holes being opened in the pipe body of the diversion pipe, and also including an adjustment mechanism;

[0006] The liquid pump is used to deliver flocculant to the diversion pipe so that the flocculant is sprayed out through the through hole. The adjustment mechanism is used to adjust the flow rate delivered to the diversion pipe and the number of through holes opened according to the sewage level in the delivery tank. When the sewage level in the delivery tank rises, the adjustment mechanism opens the through holes at the corresponding positions from bottom to top.

[0007] Furthermore, the middle section of the conveying trough is horizontally positioned, and the distribution pipe is fixedly connected to the liquid storage tank.

[0008] Furthermore, the adjusting mechanism includes a sliding rod that is slidably sleeved with a fixed seat. A connecting pipe is fixedly connected to the output end of the liquid pump. A proportional valve is fixedly installed on the body of the connecting pipe. A connecting seat is fixedly sleeved on the body of the sliding rod. A float is fixedly connected to the bottom of the sliding rod. A first spring is movably sleeved on the outside of the sliding rod. A second resistance mechanism is installed on the inside of the fixed seat. The second resistance mechanism is electrically connected to the proportional valve in series.

[0009] Furthermore, the second variable resistance mechanism includes two second resistance rods, which are fixedly connected to the fixed base. The two second resistance rods are slidably sleeved with second sliding contact blocks. The proportional valve is set as an inverse proportional electromagnetic regulating valve. The opening degree of the proportional valve increases as the current flowing through the proportional valve decreases. The bottoms of the two second resistance rods are connected to the second circuit. The sliding rod is fixedly connected to the second sliding contact block.

[0010] Furthermore, an adjusting ring is slidably sleeved on the outer side of the diverter, and an adjusting plate is fixedly connected to one side of the connecting seat, with the adjusting plate and the adjusting ring being fixedly connected.

[0011] Furthermore, the diameter of the through hole located at the bottom of the diverter is larger than the diameter of the through hole located near the top. A fixing plate is fixedly installed at the bottom of the fixing base, a connecting rod is slidably installed on one side of the fixing plate, and a baffle is fixedly connected to one side of the connecting rod.

[0012] A second rack is fixedly connected to the other side of the connecting rod, and a third spring is fixedly connected to one side of the fixed plate. The connecting rod is T-shaped, and the third spring is movably sleeved on the outside of the connecting rod with one end fixedly connected to the T-shaped part of the connecting rod. The other end of the third spring is fixedly connected to the inner wall of the fixed plate. An adjusting rod is slidably arranged on one side of the bottom of the fixed plate, and a third rack is fixedly connected to the bottom end of the adjusting rod. A second gear is rotatably arranged at the bottom of the fixed plate via a rotating shaft. Both the third rack and the second rack mesh with the second gear. A first resistance mechanism is arranged on one side of the fixed seat.

[0013] Furthermore, the first variable resistance mechanism includes a first resistance rod and a first sliding contact block. The first resistance rod is fixedly installed in the fixed base, and the first sliding contact block is fixedly connected to the adjusting rod. The top of the first resistance rod is connected to the first circuit. An electromagnet is fixedly installed on one side of the fixed base. The electromagnet is electrically connected to the first resistance rod in series. An adjusting block is slidably installed on one side of the fixed base. A first rack is fixedly connected to one side of the adjusting block. The first rack is slidably connected to the fixed base. A second spring is fixedly connected to one side of the adjusting block, and a magnetic block is fixedly connected to the other side of the adjusting block. The force between the magnetic block and the electromagnet is a repulsive force.

[0014] Furthermore, a No. 1 gear is rotatably mounted on the top of the diverter tube, and the No. 1 gear meshes with the No. 1 rack. Two moving rods are fixedly connected to the bottom of the No. 1 gear, and an adjusting sleeve is fixedly connected to the bottom of the moving rods. The adjusting sleeve is rotatably connected to the diverter tube, and the arc surface of the adjusting sleeve is provided with several adjusting grooves.

[0015] Furthermore, the second variable resistance mechanism also includes two third resistance rods. The third resistance rods are fixedly installed in the fixed base. A third sliding contact block is slidably sleeved on the outer side of the third resistance rod. One end of the third resistance rod away from the adjustment block is fixedly connected to the bottom of the second resistance rod near the adjustment block. One end of the third resistance rod near the adjustment block is connected to the second circuit, and the end of the third resistance rod connected to the circuit is the end near the second resistance rod. The bottom end of the second resistance rod away from the adjustment block is connected to the second circuit.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The wastewater treatment equipment provided in this application uses a float to move a sliding rod according to the liquid level in the conveying tank, which in turn moves a second sliding contact block, changing the resistance value of the second resistance rod connected to the circuit, thereby changing the opening of the proportional valve. This allows water to flow through the diversion pipe and mix flocculant into the wastewater. Furthermore, the flow rate of the mixed flocculant is adjusted according to the change in liquid level when the flow rate changes, thereby improving the flocculant dispersion efficiency and the compatibility between the flocculant dosage and the wastewater flow rate.

[0018] 2. The coal mine wastewater treatment equipment provided in this application moves the connecting seat by moving the float, which in turn drives the adjusting ring to move. When the number of through holes blocked by the adjusting ring is changed and the liquid level increases, the through holes at the corresponding heights are opened in order from bottom to top while the opening degree of the proportional valve increases. This allows the wastewater to mix with a sufficient amount of flocculant in each height range, further ensuring the mixing efficiency of the flocculant. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a schematic diagram of the structure at the fixing point of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the connector in this application;

[0023] Figure 4 For this application Figure 3 Enlarged view of the structure at point A in the image;

[0024] Figure 5 This is a schematic cross-sectional view of the structure at the fixed plate location in this application;

[0025] Figure 6 This is a schematic diagram of the adjustment sleeve structure in this application.

[0026] In the diagram: 1. Conveying trough; 2. Storage tank; 3. Fixed base; 4. Distribution pipe; 5. Connecting pipe; 6. Liquid pump; 7. No. 1 variable resistance mechanism; 701. No. 1 resistance rod; 702. No. 1 sliding contact block; 8. No. 2 variable resistance mechanism; 801. No. 2 resistance rod; 802. No. 2 sliding contact block; 803. No. 3 resistance rod; 804. No. 3 sliding contact block; 9. Float; 10. Sliding rod; 11. Connecting base; 12. No. 1 spring; 13. Adjusting block; 14. Spring No. 2; 15. Magnetic block; 16. Electromagnet; 17. Rack No. 1; 18. Gear No. 1; 19. Adjusting plate; 20. Adjusting ring; 21. Diverter pipe; 22. Through hole; 23. Proportional valve; 24. Fixing plate; 25. Rack No. 2; 26. Connecting rod; 27. Rack No. 3; 28. Adjusting rod; 29. ​​Baffle; 30. Gear No. 2; 31. Moving rod; 32. Spring No. 3; 33. Adjusting sleeve; 34. Adjusting groove. Detailed Implementation

[0027] 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.

[0028] Example 1, as Figures 1-4 A wastewater treatment device for coal mine production includes a conveying trough 1. The two ends of the conveying trough 1 are at different elevations. The conveying trough 1 is connected to a grit chamber located at a higher elevation and a sedimentation tank located at a lower elevation. Wastewater pumped to the grit chamber via a lift pump is pre-filtered to remove large impurities before being conveyed into the conveying trough 1. Under gravity, the wastewater flows along the conveying trough and is eventually conveyed into the sedimentation tank. (See reference...) Figure 1 The middle section of the conveying trough 1 is horizontally positioned, while the two side sections are inclined. A storage tank 2 is fixedly installed on the top of the conveying trough 1 to store flocculant. A mounting base 3 is fixedly connected to the bottom of the storage tank 2. A distribution pipe 4 is fixedly connected to the bottom of the storage tank 2. A liquid pump 6 is fixedly installed at the bottom of the storage tank 2. The input end of the liquid pump 6 is connected to the cavity of the storage tank 2 via a pipe. A connecting pipe 5 is fixedly connected to the output end of the liquid pump 6 and is connected to the distribution pipe 4. A proportional valve 23 is fixedly installed on the body of the connecting pipe 5. (See reference...) Figure 3 The bottom of the distribution pipe 4 is fixedly connected to a diversion pipe 21. The number of diversion pipes 21 is set to several. The several diversion pipes 21 are arranged at even intervals along the axial direction of the distribution pipe 4. The body of the diversion pipe 21 has several through holes 22. The several through holes 22 are arranged at even intervals on the arc surface of the diversion pipe 21.

[0029] During use, the sewage delivered to the grit chamber by the booster pump flows from the end of the conveying trough 1 near the grit chamber to the end near the sedimentation tank under the action of gravity. At this time, part of the body of the diversion pipe 21 is submerged in the sewage in the conveying trough 1, that is, part of the through hole 22 is located below the liquid level of the sewage in the conveying trough 1. The liquid pump 6 is started and the proportional valve 23 is opened. The liquid pump delivers the flocculant to the diversion pipe 21 through the connecting pipe 5 and the distribution pipe 4. The flocculant is sprayed out at different heights of the sewage through the diversion pipe 21, so that the flocculant is mixed into the sewage at multiple points. Through the turbulence during the sewage flow, the sewage and flocculant are mixed, so that the sewage entering the sedimentation tank is mixed with the flocculant during the transportation process, and the water flow passes through the flocculant delivery position, thereby improving the dispersion efficiency of the flocculant.

[0030] A sliding rod 10 is slidably sleeved on one side of the fixed base 3. The sliding rod 10 is T-shaped and can slide vertically relative to the fixed base 3 without detaching from it. A connecting seat 11 is fixedly sleeved on the body of the sliding rod 10, located outside the fixed base 3. A float 9 is fixedly connected to the bottom of the sliding rod 10. The position of the fixed base 3 corresponds to the position of the horizontal section of the conveying trough 1. A first spring 12 is movably sleeved on the outside of the sliding rod 10, located between the connecting seat 11 and the float 9, and is used to push the float 9 to slide away from the fixed base 3. A second resistance mechanism 8 is provided on the inner side of the fixed base 3. Specifically, the second resistance mechanism 8 includes two second resistance rods 801, which are fixedly connected to the fixed base 3. (See reference...) Figure 4 Two resistor rods 801 are vertically arranged, and two sliding contact blocks 802 are slidably connected to the rods of the two resistor rods 801. The proportional valve 23 is set as an electromagnetic proportional regulating valve. The opening of the proportional valve 23 increases as the current flowing through the proportional valve 23 decreases. The bottom of the two resistor rods 801 is connected to the second circuit, that is, the resistance value of the two resistor rods 801 increases as the distance between the bottom of the two resistor rods 801 and the sliding contact block 802 increases. The two resistor rods 801 are electrically connected to the proportional valve 23 in series. The sliding rod 10 is fixedly connected to the sliding contact block 802.

[0031] Under the buoyancy of the sewage in the conveying tank 1, the float 9 tends to move vertically upward. When the liquid level in the conveying tank 1 fluctuates and rises, the sewage flow rate through the conveying tank 1 increases. Under the buoyancy, the height of the float 9 is raised by the liquid level and moves closer to the fixed seat 3, overcoming the elastic force of the first spring 12. The movement of the float 9 drives the sliding rod 10 to move, and the movement of the sliding rod 10 drives the second sliding contact block 802 to move and rise. At this time, the distance between the second sliding contact block 802 and the bottom of the second resistance rod 801 increases, and the resistance value connected to the second circuit increases, thereby reducing the current flowing through the proportional valve 23. The opening degree of the proportional valve 23 increases accordingly, thereby increasing the flow rate of flocculant added to the conveying tank 1 when the liquid level in the conveying tank 1 increases. This improves the matching degree between the flocculant flow rate mixed into the sewage and the sewage flow rate. While ensuring the flocculant dispersion efficiency, it avoids waste due to excessive flocculant addition or insufficient flocculant addition leading to incomplete coal powder flocculation in the sewage, further improving the reliability of the sewage treatment equipment.

[0032] An adjusting ring 20 is slidably fitted onto the outer side of the diverter pipe 21. The inner diameter of the adjusting ring 20 is adapted to the outer diameter of the diverter pipe 21. The adjusting ring 20 blocks and seals part of the through hole 22 located at the top of the diverter pipe 21. (See reference...) Figure 3An adjusting plate 19 is fixedly connected to one side of the connecting seat 11. The adjusting plate 19 is fixedly connected to the adjusting ring 20. The adjusting plate 19 is movably set outside the diversion pipe 21. When the float 9 rises, the connecting seat 11 is driven to move. The connecting seat 11 drives the adjusting plate 19 to move. The adjusting plate 19 drives the adjusting ring 20 to move and rise, so that the position of the adjusting ring 20 is offset from the position of the corresponding through hole 22. When the opening of the proportional valve 23 increases, the number of through holes 22 in the open state increases. When the liquid level in the corresponding conveying tank 1 increases, the increased through holes 22 are at a height that matches the liquid level. That is, the through holes 22 above the liquid level are still closed by the adjusting ring 20. This ensures that under the condition of liquid level fluctuation, there are through holes 22 at different depths of sewage to discharge flocculant. This is more conducive to the full mixing of flocculant and sewage. It also avoids the situation where the open through holes 22 are above the liquid level, causing excessive flocculant to be mixed into the top part of the sewage. This results in the amount of flocculant added at the bottom being diverted and relatively less, thus affecting the overall dispersion efficiency.

[0033] Example 2, as Figures 1-5 Based on Embodiment 1, the diameter of the through hole 22 located at the bottom of the diversion pipe 21 is larger than that of the through hole 22 located near the top. During the passage of wastewater through the conveying trough 1, the coal powder particles tend to sink to the bottom of the conveying trough 1 under gravity. Correspondingly increasing the opening of the through hole 22 at the corresponding height increases the amount of flocculant mixed into the wastewater passing through the bottom of the conveying trough 1, thus increasing the match between the amount of coal powder and the amount of mixed flocculant, which is beneficial to the flocculation efficiency of the coal powder particles. A fixing plate 24 is fixedly installed at the bottom of the fixing base 3. (See reference...) Figure 5 A connecting rod 26 is slidably provided on one side of the fixed plate 24. The connecting rod 26 is T-shaped and can slide horizontally relative to the fixed plate 24 without detaching from it. A baffle 29 is fixedly connected to one side of the connecting rod 26, and a rack 25 is fixedly connected to the other side of the connecting rod 26. A spring 32 is fixedly connected to one side inside the fixed plate 24. The spring 32 is used to push the connecting rod 26 out of the fixed plate 24. Specifically, the spring 32 is movably sleeved on the outside of the connecting rod 26 and one end is fixedly connected to the T-shaped part of the connecting rod. The other end of the spring 32 is fixedly connected to the inner wall of the fixed plate 24. An adjusting rod 28 is slidably provided on one side of the bottom of the fixed plate 24 and can slide vertically relative to the fixed plate 24.

[0034] A third rack 27 is fixedly connected to the bottom end of the adjusting rod 28. A second gear 30 is rotatably mounted on the bottom of the fixed plate 24 via a rotating shaft. Both the third rack 27 and the second rack 25 mesh with the second gear 30. A first resistance mechanism 7 is provided on one side of the fixed base 3. The first resistance mechanism 7 includes a first resistance rod 701 and a first sliding contact block 702. The first resistance rod 701 is fixedly mounted vertically in the fixed base 3. The first sliding contact block 702 is fixedly connected to the adjusting rod 28. The top of the first resistance rod 701 is connected to... When the distance between the first sliding contact block 702 and the top of the first resistor rod 701 decreases in the first circuit, the resistance value of the first resistor rod 701 connected to the circuit decreases. An electromagnet 16 is fixedly installed on one side of the fixed base 3. The electromagnet 16 and the first resistor rod 701 are electrically connected in series. An adjusting block 13 is slidably installed on one side of the fixed base 3. A rack 17 is fixedly connected to one side of the adjusting block 13. The rack 17 is slidably connected to the fixed base 3 and can slide horizontally relative to the fixed base 3.

[0035] A second spring 14 is fixedly connected to one side of the adjusting block 13, and a magnetic block 15 is fixedly connected to the other side of the adjusting block 13. The second spring 14 is used to push the adjusting block 13 closer to the electromagnet 16. The force between the magnetic block 15 and the electromagnet 16 is a repulsive force. A first gear 18 is rotatably installed at the top of the diverter 21. The first gear 18 meshes with the first rack 17. Two moving rods 31 are fixedly connected to the bottom of the first gear 18. The two moving rods 31 are symmetrically arranged about the center plane of the diverter 21. An adjusting sleeve 33 is fixedly connected to the bottom of the moving rod 31. The adjusting sleeve 33 is rotatably connected to the diverter 21. The axial length of the adjusting sleeve 33 corresponds to the position of the large-diameter through hole 22 in the through hole 22. Several adjusting grooves 34 are opened on the arc surface of the adjusting sleeve 33. The position of the adjusting grooves 34 corresponds to the position of the through hole 22. The adjusting sleeve 33 is used to block the through hole 22, thereby changing the opening size of the through hole 22.

[0036] When wastewater passes through the conveying trough 1, coal powder particles are easily carried along the bottom of the conveying trough 1 by the water flow and impact the baffle 29 when passing it. The impact of the water flow causes the baffle 29 to move closer to the fixed plate 24. As the amount of coal powder particles at the bottom of the wastewater increases, the impact force on the baffle 29 increases while the liquid level remains constant. This causes the baffle 29 to overcome the elastic force of the third spring 32 and move the connecting rod 26. The connecting rod 26 then moves the second rack 25, which in turn rotates the second gear 30. The second gear 30 then moves the third rack 27, thereby causing the adjusting rod 28 to move and rise. The movement of the adjusting rod 28 causes the first sliding contact block 702 to move and rise, reducing the resistance value of the first resistor rod 701 connected to the circuit. As the current flowing through the electromagnet 16 increases, the electromagnet 16, in conjunction with the magnetic block 15, pushes the adjusting block 13 to move against the elastic force of the second spring 14. The adjusting block 13 drives the first rack 17 to move horizontally relative to the fixed seat 3. The first rack 17 drives the first gear 18 to rotate, and the first gear 18 drives the moving rod 31 to rotate. This causes the moving rod 31 to drive the adjusting sleeve 33 to rotate relative to the corresponding diversion pipe 21, increasing the area of ​​the corresponding region of the adjusting groove 34 and the through hole 22, and increasing the opening of the through hole 22. This results in a relative increase in the flow rate of flocculant discharged from the bottom of the diversion pipe 21. When the coal powder is concentrated at the bottom of the sewage, the amount of flocculant added at the corresponding depth is increased, which is beneficial to the contact efficiency between the coal powder and the flocculant, thereby improving the overall mixing and dispersion efficiency.

[0037] Example 3, as Figures 1-6 Based on Embodiment 2, the bottom end of the second resistor rod 801 is connected to the second circuit via the third resistor rod 803. Specifically, the second variable resistor mechanism 8 also includes two third resistor rods 803. The third resistor rods 803 are horizontally arranged and fixedly installed in the fixed base 3. The outer side of the third resistor rod 803 is slidably sleeved with a third sliding contact block 804. One end of the third resistor rod 803 away from the adjusting block 13 is fixedly connected to the bottom of a second resistor rod 801 near the adjusting block 13. One end of the third resistor rod 803 near the adjusting block 13 is connected to the second circuit, and the third... The circuit connection end of resistor rod 803 is close to the end of resistor rod 801. The bottom end of resistor rod 801, which is far away from adjustment block 13, is connected to circuit 2. When sliding block 804 moves away from the circuit connection end of resistor rod 803, the resistance value of resistor rod 803 connected to circuit 2 increases. That is, resistor rod 801 and resistor rod 803 are connected to circuit 2 in series. The circuit connection end of resistor rod 803 and the connection section with resistor rod 801 are both close to electromagnet 16. Adjustment block 13 and sliding block 804 are fixedly connected.

[0038] When the liquid level in the conveying tank 1 decreases while the coal powder content near the bottom of the conveying tank 1 increases, the baffle 29 causes the connecting rod 26 to retract into the fixed plate 24. At this time, the force between the electromagnet 16 and the magnetic block 15 increases, causing the adjusting block 13 to move. The movement of the adjusting block 13 causes the third sliding contact block 804 to move away from the electromagnet 16, increasing the distance between the third sliding contact block 804 and the circuit connection end of the third resistance rod 803. The resistance value of the third resistance rod 803 connected to the second circuit increases, while the liquid level decreases. The first spring 12 pushes the float 9 down, causing the second sliding contact block 802 to fall. The resistance value of the second resistance rod 801 connected to the second circuit decreases, thereby reducing the current flowing through the proportional valve 23. As the change in flow rate decreases, the opening of the bottom through-hole 22 is increased while the top through-hole 22 is closed. This reduces the number of open through-holes 22 and relatively increases the opening of the proportional valve 23. This prevents the proportional valve 23 from becoming too small when the liquid level drops but the coal powder content at the bottom of the sewage increases, thus causing the adjustment of the through-hole 22 opening to fail. This further ensures the compatibility between the flow rate of the flocculant mixed into each layer and the sewage flow rate. When the liquid level in the conveying tank 1 remains unchanged, the number of open through-holes 22 remains unchanged. At this time, the opening of the proportional valve 23 is relatively increased to ensure the flow rate of flocculant sprayed from the top through-hole 22. By adding additional flocculant, sufficient coagulant can be mixed into the bottom of the conveying tank 1.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wastewater treatment device for coal mine production, comprising a conveying trough, the two ends of which are at different heights, and a storage tank fixedly installed on the top of the conveying trough, characterized in that, The bottom of the liquid storage tank is fixedly connected to a fixed base, a distribution pipe is provided at the bottom of the liquid storage tank, a liquid pump is fixedly installed at the bottom of the liquid storage tank, several diversion pipes are fixedly connected to the bottom of the distribution pipe, several through holes are opened in the body of the diversion pipe, and an adjustment mechanism is also included. The liquid pump is used to deliver flocculant to the distribution pipe so that the flocculant is sprayed out through the through hole. The adjustment mechanism is used to adjust the flow rate delivered to the distribution pipe and the number of through holes opened according to the sewage level in the delivery tank. When the sewage level in the delivery tank rises, the adjustment mechanism opens the through holes at the corresponding positions from bottom to top. The regulating mechanism includes a sliding rod, which is slidably sleeved with a fixed seat. A connecting pipe is fixedly connected to the output end of the liquid pump. A proportional valve is fixedly installed on the body of the connecting pipe. A connecting seat is fixedly sleeved on the body of the sliding rod. A float is fixedly connected to the bottom of the sliding rod. A first spring is movably sleeved on the outside of the sliding rod. A second resistance mechanism is installed on the inside of the fixed seat. The second resistance mechanism is electrically connected to the proportional valve in series. The No. 2 variable resistance mechanism includes two No. 2 resistance rods and two No. 3 resistance rods; The second resistor rod is fixedly connected to the fixed base. The two second resistor rods are slidably sleeved with the second sliding contact block. The bottom of the two second resistor rods is connected to the second circuit. The sliding rod is fixedly connected to the second sliding contact block. The third resistor rod is fixedly installed inside the fixed base. The third sliding contact block is slidably sleeved on the outer side of the third resistor rod. One end of the third resistor rod away from the adjustment block is fixedly connected to the bottom of the second resistor rod near the adjustment block. One end of the third resistor rod near the adjustment block is connected to the second circuit, and the end of the third resistor rod connected to the circuit is the end near the second resistor rod. The bottom end of the second resistor rod away from the adjustment block is connected to the second circuit. The adjustment block and the third sliding contact block are fixedly connected. A fixed plate is fixedly installed at the bottom of the fixed base. A connecting rod is slidably installed on one side of the fixed plate, and a baffle is fixedly connected to one side of the connecting rod. An adjusting rod is slidably installed on one side of the bottom of the fixed plate. The movement of the baffle drives the connecting rod to move, which in turn drives the adjusting rod to move. A first-order variable resistance mechanism is installed on one side of the fixed base. The first variable resistance mechanism includes a first resistance rod and a first sliding block. The first resistance rod is fixedly installed in the fixed base. The first sliding block is fixedly connected to the adjusting rod. The top of the first resistance rod is connected to the first circuit. An electromagnet is fixedly installed on one side of the fixed base. The electromagnet is electrically connected to the first resistance rod in series. An adjusting block is slidably installed on one side of the fixed base. A first rack is fixedly connected to one side of the adjusting block. The first rack is slidably connected to the fixed base. A second spring is fixedly connected to one side of the adjusting block. A magnetic block is fixedly connected to the other side of the adjusting block. The force between the magnetic block and the electromagnet is a repulsive force. A No. 1 gear is rotatably mounted on the top of the diverter tube. The No. 1 gear meshes with the No. 1 rack. Two moving rods are fixedly connected to the bottom of the No. 1 gear. An adjusting sleeve is fixedly connected to the bottom of the moving rods. The adjusting sleeve is rotatably connected to the diverter tube. Several adjusting grooves are opened on the arc surface of the adjusting sleeve.

2. A coal mine wastewater treatment device according to claim 1, characterized in that, The middle section of the delivery trough is horizontally positioned, and the distribution pipe is fixedly connected to the storage tank.

3. A coal mine wastewater treatment device according to claim 1, characterized in that, The proportional valve is configured as an inverse proportional electromagnetic control valve, and the opening degree of the proportional valve increases as the magnitude of the current flowing through the proportional valve decreases.

4. A coal mine wastewater treatment device according to claim 1, characterized in that, An adjusting ring is slidably sleeved on the outside of the shunt pipe, and an adjusting plate is fixedly connected to one side of the connecting seat. The adjusting plate is fixedly connected to the adjusting ring.

5. A coal mine wastewater treatment device according to claim 4, characterized in that, The diameter of the through hole at the bottom of the diverter is larger than that at the top; a rack number two is fixedly connected to the other side of the connecting rod, and a spring number three is fixedly connected to one side of the fixed plate. The connecting rod is T-shaped, and the spring number three is movably sleeved on the outside of the connecting rod with one end fixedly connected to the T-shaped part of the connecting rod. The other end of the spring number three is fixedly connected to the inner wall of the fixed plate; a rack number three is fixedly connected to the bottom of the adjusting rod, and a gear number two is rotatably installed at the bottom of the fixed plate via a rotating shaft. Both the rack number three and the rack number two mesh with the gear number two.

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