Coal mine production sewage treatment equipment

Abstract

The invention 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 the two ends of the conveying groove are different, a liquid storage tank is fixedly mounted at the top of the conveying groove, a fixing seat is fixedly connected to the bottom of the liquid storage tank, and 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 flow dividing pipes are fixedly connected to the bottom of the distribution pipe. Sewage is conveyed through the conveying groove, the floating block floats according to the height of the liquid level in the conveying groove to adjust the opening degree of the proportional valve, so that the flow of a mixed flocculant is adjusted, meanwhile, the floating block drives the adjusting ring to move to adjust the opening state of the through hole, and the through hole located above the liquid level is kept closed; therefore, enough flocculant is mixed in the corresponding height range of the sewage, the dispersion efficiency is improved, and meanwhile, the adaptation degree of the putting amount of the flocculant and the flow of the sewage is also improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment equipment, and particularly relates to a coal mine production sewage treatment equipment. BACKGROUND

[0002] In the process of mining and washing and selecting of coal, sewage treatment equipment is needed to separate coal slime from water and purify sewage. The existing sewage treatment equipment includes a grid pool and a sedimentation tank. The coal mine production sewage is transported into the grid pool by a lifting pump, and then the sewage is transported into the sedimentation tank through a sewage discharge pipe. A corresponding amount of flocculating agent is added into the sedimentation tank, so that the coal particles are flocculated and deposited. The sludge is discharged through a sludge pump, and the produced water is recovered through a backflow tank at the top of the sedimentation tank, so as to be reused in subsequent coal mine production operations.

[0003] However, in the process of using the traditional sewage treatment equipment, the flocculating agent is dispersed in the sewage at the top layer of the sedimentation tank, and the coal powder forms flocculating material in a static state. Therefore, the subsequent flocculating agent is blocked by the flocculating material layer, which affects the dispersion efficiency of the flocculating agent. High-speed stirring of the coal mine sewage will cause the small flocculating material to be scattered, which will easily cause the flocculating material to grow poorly or be broken. Therefore, an additional stirring tank needs to be arranged to perform intermittent flocculating agent and coal mine sewage dispersion operation, which increases the production cost of the coal mine sewage and affects the continuity of the sewage treatment. SUMMARY

[0004] The present application provides a coal mine production sewage treatment equipment, which has the advantages of improving the dispersion efficiency of the flocculating agent and dynamically adjusting the adding amount, so as to solve the problem that the flocculating agent produced in the process of adding into the sedimentation tank affects the dispersion efficiency of the subsequent flocculating agent.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a coal mine production sewage treatment equipment, comprising a conveying tank, the conveying tank is different in height at two ends, a liquid storage tank is fixedly installed at the top of the conveying tank, 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, a plurality of shunt pipes are fixedly connected to the bottom of the distribution pipe, a plurality of through holes are formed in the pipe body of the shunt pipe, and an adjusting mechanism is further included.

[0006] The liquid pump is used to convey the flocculating agent to the shunt pipe, so that the flocculating agent is sprayed out through the through holes. The adjusting mechanism is used to adjust the flow rate conveyed to the shunt pipe and the opening number of the through holes according to the liquid level height of the sewage in the conveying tank. When the liquid level height of the sewage in the conveying tank rises, the adjusting mechanism opens the through holes at the corresponding positions from bottom to top in sequence.

[0007] Further, the tank body at the middle part of the conveying tank is horizontally arranged, and the distribution pipe is fixedly connected with the liquid storage tank.

[0008] Further, the adjusting mechanism comprises a sliding rod, the sliding rod is in sliding fit with the fixed seat, the output end of the liquid pump is fixedly connected with a connecting pipe, the pipe body of the connecting pipe is fixedly provided with a proportional valve, the rod body of the sliding rod is fixedly sleeved with a connecting seat, the bottom of the sliding rod is fixedly connected with a float, the outer side of the sliding rod is movably sleeved with a first spring, the inner side of the fixed seat is provided with a second variable resistance mechanism, and the second variable resistance mechanism is electrically connected with the proportional valve in series.

[0009] Further, the second variable resistance mechanism comprises two second resistance rods, the second resistance rods are fixedly connected with the fixed seat, the rod bodies of the two second resistance rods are slidingly sleeved with second sliding contact blocks, the proportional valve is an inverse proportional electromagnetic adjusting valve, the opening degree of the proportional valve increases with the decrease of the current flowing through the proportional valve, the bottoms of the two second resistance rods are connected with a second circuit, and the sliding rod is fixedly connected with the second sliding contact blocks.

[0010] Further, the outer side of the shunt pipe is slidingly sleeved with an adjusting ring, one side of the connecting seat is fixedly connected with an adjusting plate, and the adjusting plate is fixedly connected with the adjusting ring.

[0011] Further, the aperture of the through hole located at the bottom position of the shunt pipe is larger than the aperture of the through hole located at the top position, the bottom of the fixed seat is fixedly provided with a fixed plate, one side of the fixed plate is slidingly provided with a connecting rod, and one side of the connecting rod is fixedly connected with a baffle.

[0012] The other side of the connecting rod is fixedly connected with a second rack, one side in the fixed plate is fixedly connected with a third spring, the connecting rod is in the shape of "T", the third spring is movably sleeved on the outer side of the connecting rod and fixedly connected with the "T" shaped part of the connecting rod at one end, the other end of the third spring is fixedly connected with the inner wall of the fixed plate, one side of the bottom of the fixed plate is slidingly provided with an adjusting rod, the bottom end of the adjusting rod is fixedly connected with a third rack, the bottom in the fixed plate is rotationally provided with a second gear through a rotating shaft, the third rack and the second rack are in mesh with the second gear, and one side of the fixed seat is provided with a first variable resistance mechanism.

[0013] Further, the first resistance changing mechanism comprises a first resistance rod and a first sliding contact block, the first resistance rod is fixedly arranged in the fixed seat, the first sliding contact block is fixedly connected with the adjusting rod, the top of the first resistance rod is connected with a first circuit, one side of the fixed seat is fixedly provided with an electromagnet, the electromagnet is electrically connected with the first resistance rod in series, one side of the fixed seat is slidably provided with an adjusting block, one side of the adjusting block is fixedly connected with a first gear rack, the first gear rack is slidably connected with the fixed seat, one side of the adjusting block is fixedly connected with a second spring, the other side of the adjusting block is fixedly connected with a magnetic block, and the acting force between the magnetic block and the electromagnet is repulsion.

[0014] Further, the top of the shunt pipe is rotatably provided with a first gear, the first gear is intermeshed with a first gear rack, the bottom of the first gear is fixedly connected with two moving rods, the bottom of the moving rod is fixedly connected with an adjusting sleeve, the adjusting sleeve is rotatably connected with the shunt pipe, and the arc surface of the adjusting sleeve is provided with a plurality of adjusting grooves.

[0015] Further, the second resistance changing mechanism further comprises two third resistance rods, the third resistance rods are fixedly arranged in the fixed seat, the outer side of the third resistance rod is slidably sleeved with a third sliding contact block, one end of the third resistance rod away from the adjusting block is fixedly connected with the bottom of the second resistance rod close to the adjusting block, one end of the third resistance rod close to the adjusting block is connected with a second circuit, and the end of the third resistance rod connected with the circuit is close to one end of the second resistance rod, and the bottom end of the second resistance rod away from the adjusting block is connected with the second circuit.

[0016] The application has the following beneficial effects:

[0017] 1. The coal mine production wastewater treatment equipment provided by the application drives the sliding rod to move, drives the second sliding contact block to move, changes the resistance value of the second resistance rod connected with the circuit, changes the opening degree of the proportional valve, makes the water flow pass through the shunt pipe to mix the flocculating agent into the wastewater, adjusts the flow of the mixed flocculating agent according to the liquid level change when the flow changes, improves the flocculating agent dispersion efficiency, and improves the adaptation degree of the flocculating agent dosage and the wastewater flow.

[0018] 2. The coal mine production wastewater treatment equipment provided by the application drives the connecting seat to move, drives the adjusting ring to move, changes the number of the adjusting ring shielding through holes, and opens the through holes at the corresponding height from bottom to top when the liquid level increases while the opening degree of the proportional valve increases, so that the wastewater mixes with sufficient flocculating agent in each height range, and further guarantees the mixing efficiency of the flocculating agent. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only aim to explain part of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without any creative effort based on the provided drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0021] Figure 2 It is a schematic diagram of the structure at the fixed seat of the present application.

[0022] Figure 3 It is a schematic diagram of the structure at the connecting seat of the present application.

[0023] Figure 4 It is an enlarged view of the structure at A in the present application. Figure 3

[0024] Figure 5 It is a sectional view of the structure at the fixed plate of the present application.

[0025] Figure 6 It is a schematic diagram of the structure at the adjusting sleeve of the present application.

[0026] In the figure: 1, conveying groove; 2, liquid storage tank; 3, fixed seat; 4, distribution pipe; 5, connecting pipe; 6, liquid pump; 7, first variable resistance mechanism; 701, first resistance rod; 702, first sliding contact block; 8, second variable resistance mechanism; 801, second resistance rod; 802, second sliding contact block; 803, third resistance rod; 804, third sliding contact block; 9, floating block; 10, sliding rod; 11, connecting seat; 12, first spring; 13, adjusting block; 14, second spring; 15, magnetic block; 16, electromagnet; 17, first rack; 18, first gear; 19, adjusting plate; 20, adjusting ring; 21, shunt pipe; 22, through hole; 23, proportional valve; 24, fixed plate; 25, second rack; 26, connecting rod; 27, third rack; 28, adjusting rod; 29, baffle; 30, second gear; 31, moving rod; 32, third spring; 33, adjusting sleeve; 34, adjusting groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0028] Embodiment one, as​Figures 1-4 The utility model provides a coal mine production sewage treatment equipment, including conveying groove 1, the height of two ends of conveying groove 1 is different, conveying groove 1 is connected with the grid pool at the high point of elevation, the sedimentation tank at the low point of elevation, after the sewage that conveying pump is transported to the grid pool is removed large size impurity through prefiltering treatment, is transported to conveying groove 1, and under the action of gravity along conveying groove and is finally transported to the sedimentation tank, refer to Figure 1 The groove body of conveying groove 1 in the middle part is horizontally arranged, the groove body of conveying groove 1 in both sides is inclinedly arranged, the top of conveying groove 1 is fixedly installed with liquid storage tank 2, the liquid storage tank 2 is used for storing flocculating agent, the bottom of liquid storage tank 2 is fixedly connected with fixed seat 3, the bottom of liquid storage tank 2 is provided with distribution pipe 4, the distribution pipe 4 is fixedly connected with liquid storage tank 2, the bottom of liquid storage tank 2 is fixedly installed with liquid pump 6, the input end of liquid pump 6 is communicated with the cavity of liquid storage tank 2 through pipeline, the output end of liquid pump 6 is fixedly connected with connecting pipe 5, the connecting pipe 5 is communicated with distribution pipe 4, the pipe body of connecting pipe 5 is fixedly provided with proportional valve 23, refer to Figure 3 The bottom of distribution pipe 4 is fixedly connected with shunt pipe 21, the number of shunt pipe 21 is set as several, several shunt pipes 21 are arranged in the axial direction of distribution pipe 4 in the form of interval uniformity, the pipe body of shunt pipe 21 is provided with several through holes 22, and several through holes 22 are arranged on the arc surface portion of shunt pipe 21 in the form of interval uniformity.

[0029] When using, the sewage transported to the grid pool by the lifting pump flows from the end of conveying groove 1 close to the grid pool to the end close to the sedimentation tank under the action of gravity, at this time, part of the pipe body of shunt pipe 21 is immersed in the sewage in conveying groove 1, that is, part of the through hole 22 is below the liquid level of the sewage in conveying groove 1, start liquid pump 6 and open proportional valve 23, the liquid pump transports flocculating agent into shunt pipe 21 through connecting pipe 5 and distribution pipe 4, the flocculating agent is sprayed at different height positions of the sewage through shunt pipe 21, so that the flocculating agent is mixed into the sewage at multiple points, the mixing of the sewage and the flocculating agent is promoted through the turbulent flow in the flow process of the sewage, so that the sewage in the sedimentation tank is mixed with the flocculating agent in the conveying process, the water flow flows through the flocculating agent injection position, thereby improving the dispersion efficiency of the flocculating agent.

[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 3The side of the connecting seat 11 is fixedly connected with an adjusting plate 19, the adjusting plate 19 is fixedly connected with an adjusting ring 20, the adjusting plate 19 is movably arranged on the outside of the shunt pipe 21, the floating block 9 is driven to move when rising, the connecting seat 11 is driven to move by the adjusting plate 19, the adjusting plate 19 is driven to move and rise by the adjusting ring 20, the position of the adjusting ring 20 is staggered with the position of the corresponding through hole 22, the number of the through holes 22 in the open state is increased while the opening of the proportional valve 23 is increased, and the through hole 22 corresponding to the increase of the liquid level in the conveying groove 1 is at a height adapted to the liquid level, that is, the through hole 22 above the liquid level is still in the closed state of the adjusting ring 20, so that the through hole 22 can guide the flocculating agent out of the sewage at different depths under the condition of liquid level fluctuation, which is further beneficial to the sufficient mixing of the flocculating agent and the sewage, and avoids that the through hole 22 in the open state is located above the liquid level, which causes the top part of the sewage to mix with excessive flocculating agent, and causes the flocculating agent at the bottom to be shunted, which affects the overall dispersion efficiency.

[0033] In example two, as Figures 1-5 On the basis of example one, the hole diameter of the through hole 22 located at the bottom of the shunt pipe 21 is greater than the hole diameter of the through hole 22 located at the top, and during the process of sewage passing through the conveying groove 1, the coal particles are easily sunk to the bottom of the conveying groove 1 under the action of gravity, and the opening degree of the through hole 22 at the corresponding height is increased, so that the amount of flocculating agent mixed with the sewage at the bottom of the conveying groove 1 is increased, the adaptation degree of the amount of coal powder and the amount of mixed flocculating agent is increased, which is beneficial to the flocculation efficiency of the coal particles, and the bottom of the fixed seat 3 is fixedly provided with a fixed plate 24, as shown in Figure 5 One side of the fixed plate 24 is slidably provided with a connecting rod 26, the connecting rod 26 is in T shape, the connecting rod 26 can slide horizontally relative to the fixed plate 24 without leaving the fixed plate 24, one side of the connecting rod 26 is fixedly connected with a baffle 29, the other side of the connecting rod 26 is fixedly connected with a second rack 25, one side of the fixed plate 24 is fixedly connected with a third spring 32, the third spring 32 is used to push the connecting rod 26 to extend out of the fixed plate 24, specifically, the third spring 32 is movably sleeved on the outside of the connecting rod 26 and one end is fixedly connected with the T-shaped part of the connecting rod, the other end of the third spring 32 is fixedly connected with the inner wall of the fixed plate 24, one side of the bottom of the fixed plate 24 is slidably provided with an adjusting rod 28, the adjusting rod 28 can slide vertically relative to the fixed plate 24.

[0034] The bottom end of the adjusting rod 28 is fixedly connected with a third rack 27, the bottom of the fixed plate 24 is rotatably provided with a second gear 30 through a rotating shaft, the third rack 27 and the second rack 25 are all engaged with the second gear 30, one side of the fixed seat 3 is provided with a first variable resistance mechanism 7, the first variable resistance mechanism 7 comprises a first resistance rod 701 and a first sliding contact block 702, the first resistance rod 701 is fixedly arranged in the fixed seat 3 in a vertical state, the first sliding contact block 702 is fixedly connected with the adjusting rod 28, the distance between the first sliding contact block 702 and the top end of the first resistance rod 701 is reduced, the resistance value of the first resistance rod 701 connected with the circuit is reduced, one side in the fixed seat 3 is fixedly provided with an electromagnet 16, the electromagnet 16 is electrically connected with the first resistance rod 701 in a series mode, one side of the adjusting block 13 is slidably arranged in the fixed seat 3, one side of the adjusting block 13 is fixedly connected with a first rack 17, the first rack 17 is slidably connected with the fixed seat 3, and the first rack 17 can slide horizontally relative to the fixed seat 3.

[0035] One side of the adjusting block 13 is fixedly connected with a second spring 14, the other side of the adjusting block 13 is fixedly connected with a magnetic block 15, the second spring 14 is used for pushing the adjusting block 13 to be close to the electromagnet 16, the acting force between the magnetic block 15 and the electromagnet 16 is repulsion, the top of the shunt pipe 21 is rotatably provided with a first gear 18, the first gear 18 is engaged with the first rack 17, the bottom of the first gear 18 is fixedly connected with two moving rods 31, the two moving rods 31 are symmetrically arranged about the center surface of the shunt pipe 21, the bottom of the moving rod 31 is fixedly connected with an adjusting sleeve 33, the adjusting sleeve 33 is rotatably connected with the shunt pipe 21, the axial length of the adjusting sleeve 33 corresponds to the arrangement position of the large aperture through hole 22 in the through hole 22, the arc surface of the adjusting sleeve 33 is provided with a plurality of adjusting grooves 34, the positions of the adjusting grooves 34 correspond to the positions of the through holes 22, and the adjusting sleeve 33 is used for shielding the through holes 22 so as to change the opening size of the through holes 22.

[0036] When the sewage passes through the conveying groove 1, the coal particles at the bottom of the conveying groove 1 are easily moved by the water flow and impact the baffle 29 when passing through the baffle 29, and the baffle 29 is driven to move close to the fixed plate 24 by the impact of the water flow. When the amount of coal particles at the bottom of the sewage increases, the impact force on the baffle 29 increases under the condition that the liquid level remains unchanged, so that the baffle 29 is driven to move by overcoming the elastic force of the third spring 32, the connecting rod 26 is driven to move by the baffle 29, the second rack 25 is driven to move by the connecting rod 26, the second gear 30 is driven to rotate by the second rack 25, the third rack 27 is driven to move by the second gear 30, and the adjusting rod 28 is driven to move upward by the third rack 27. The movement of the adjusting rod 28 drives the first sliding block 702 to move upward, so that the resistance value of the first resistance rod 701 connected to the circuit is reduced, the current flowing through the electromagnet 16 is increased, the electromagnet 16 drives the adjusting block 13 to move by overcoming the elastic force of the second spring 14 in cooperation with the magnetic block 15, the first rack 17 is driven to move horizontally relative to the fixed seat 3 by the adjusting block 13, the first gear 18 is driven to rotate by the first rack 17, the moving rod 31 is driven to rotate by the first gear 18, the adjusting sleeve 33 is driven to rotate relative to the corresponding shunt pipe 21 by the moving rod 31, the area of the adjusting groove 34 and the corresponding area of the through hole 22 is increased, the opening of the through hole 22 is increased, and the amount of flocculating agent discharged from the bottom of the shunt pipe 21 is relatively increased. When the coal particles are concentrated at the bottom of the sewage, the amount of flocculating agent added at the corresponding depth is increased, which is beneficial to the contact efficiency of the coal particles and the flocculating agent, thereby improving the overall mixing and dispersion efficiency.

[0037] In example three, as Figures 1-6 On the basis of example two, the bottom end of the second resistance rod 801 is connected to the second circuit through a third resistance rod 803. Specifically, the second variable resistance mechanism 8 further includes two third resistance rods 803, which are horizontally arranged and fixedly arranged in the fixed seat 3. A third sliding block 804 is sleeved on the outer side of each third resistance rod 803. One end of one third resistance rod 803 away from the adjusting block 13 is fixedly connected to the bottom of one second resistance rod 801 close to the adjusting block 13. One end of one third resistance rod 803 close to the adjusting block 13 is connected to the second circuit, and the end of the third resistance rod 803 connected to the circuit is close to one end of the second resistance rod 801. The bottom end of the other second resistance rod 801 away from the adjusting block 13 is connected to the second circuit. When the third sliding block 804 moves away from the end of the third resistance rod 803 connected to the circuit, the resistance value of the third resistance rod 803 connected to the second circuit increases, that is, the second resistance rod 801 and the third resistance rod 803 are connected to the second circuit in series. The end of the third resistance rod 803 connected to the circuit and the connection section of the second resistance rod 801 are both close to one end of the electromagnet 16. The adjusting block 13 is fixedly connected to the third sliding block 804.

[0038] When the liquid level in the conveying tank 1 decreases and the coal content near the bottom of the conveying tank 1 increases, the baffle 29 drives 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 to drive the adjusting block 13 to move, the movement of the adjusting block 13 drives the third sliding block 804 to move away from the electromagnet 16, the distance between the third sliding block 804 and the third resistance rod 803 increases, the resistance value of the third resistance rod 803 connected to the second circuit increases, and the liquid level decreases, the first spring 12 pushes the float 9 to descend, the second sliding block 802 descends, the resistance value of the second resistance rod 801 connected to the second circuit decreases, thereby reducing the change amount of the current flowing through the proportional valve 23, while closing the top part of the through hole 22, increasing the opening degree of the bottom through hole 22, reducing the number of through holes 22 in the open state, and relatively increasing the opening degree of the proportional valve 23, to avoid the proportional valve 23 opening degree being too small when the liquid level decreases and the coal content in the sewage bottom layer increases, resulting in the failure of the through hole 22 opening degree adjustment, further ensuring the matching degree of the flow of the flocculating agent mixed into each layer and the sewage flow, and when the liquid level in the conveying tank 1 is unchanged, the number of through holes 22 in the open state is unchanged, at this time, the opening degree of the proportional valve 23 is relatively increased to ensure the flow of the flocculating agent sprayed out of the top part of the through hole 22, and the flocculating agent is added to ensure that sufficient coagulant can be mixed into the bottom of the conveying tank 1.

[0039] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended 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 coal mine production wastewater treatment equipment, comprising a conveying tank (1), the conveying tank (1) is different in height at both ends, a liquid storage tank (2) is fixedly installed at the top of the conveying tank (1), characterized in that, The bottom of the liquid storage tank (2) is fixedly connected with a fixed seat (3), the bottom of the liquid storage tank (2) is provided with a distribution pipe (4), the bottom of the liquid storage tank (2) is fixedly installed with a liquid pump (6), the bottom of the distribution pipe (4) is fixedly connected with a plurality of shunt pipes (21), the pipe body of the shunt pipe (21) is provided with a plurality of through holes (22), and the adjusting mechanism is further included; The liquid pump (6) is used for conveying the flocculating agent to the shunt pipe (21) to make the flocculating agent sprayed out through the through hole (22), the adjusting mechanism is used for adjusting the flow rate conveyed to the shunt pipe (21) and adjusting the opening number of the through hole (22) according to the sewage liquid level in the conveying tank (1), and when the sewage liquid level in the conveying tank (1) rises, the adjusting mechanism opens the through holes (22) at the corresponding positions from bottom to top in sequence.

2. The coal mine production wastewater treatment equipment according to claim 1, characterized in that, The tank body of the conveying tank (1) located in the middle part is horizontally arranged, and the distribution pipe (4) is fixedly connected with the liquid storage tank (2).

3. The coal mine production wastewater treatment equipment according to claim 1, characterized in that, The adjusting mechanism includes a sliding rod (10), the sliding rod (10) is slidably sleeved with the fixed seat (3), the output end of the liquid pump (6) is fixedly connected with a connecting pipe (5), the pipe body of the connecting pipe (5) is fixedly provided with a proportional valve (23), the rod body of the sliding rod (10) is fixedly sleeved with a connecting seat (11), the bottom of the sliding rod (10) is fixedly connected with a floating block (9), the outer side of the sliding rod (10) is movably sleeved with a first spring (12), the inner side of the fixed seat (3) is provided with a second variable resistance mechanism (8), and the second variable resistance mechanism (8) is electrically connected with the proportional valve (23) in a series mode.

4. The coal mine production wastewater treatment device according to claim 3, characterized in that, The second variable resistance mechanism (8) includes two second resistance rods (801), the second resistance rods (801) are fixedly connected with the fixed seat (3), the rod bodies of the two second resistance rods (801) are slidably sleeved with second sliding contact blocks (802), the proportional valve (23) is arranged as a reverse proportional electromagnetic adjusting valve, the opening degree of the proportional valve (23) increases with the decrease of the current flowing through the proportional valve (23), the bottoms of the two second resistance rods (801) are connected with a second circuit, and the sliding rod (10) is fixedly connected with the second sliding contact blocks (802).

5. The coal mine production wastewater treatment device according to claim 3, characterized in that, The outer side of the shunt pipe (21) is slidably sleeved with an adjusting ring (20), one side of the connecting seat (11) is fixedly connected with an adjusting plate (19), and the adjusting plate (19) is fixedly connected with the adjusting ring (20).

6. The coal mine production wastewater treatment device according to claim 4, characterized in that, The aperture of the through hole (22) located at the bottom of the shunt pipe (21) is larger than that of the through hole (22) located at the top, the bottom of the fixed seat (3) is fixedly provided with a fixed plate (24), the fixed plate (24) is slidably provided with a connecting rod (26) on one side, and the connecting rod (26) is fixedly connected with a baffle (29) on one side. The other side of the connecting rod (26) is fixedly connected with a second rack (25), one side in the fixed plate (24) is fixedly connected with a third spring (32), the connecting rod (26) is in the shape of "T", the third spring (32) is movably sleeved on the outer side of the connecting rod (26) and is fixedly connected with the "T" shaped part of the connecting rod, the other end of the third spring (32) is fixedly connected with the inner wall of the fixed plate (24), one side of the bottom of the fixed plate (24) is slidably provided with an adjusting rod (28), the bottom end of the adjusting rod (28) is fixedly connected with a third rack (27), the bottom of the fixed plate (24) is rotatably provided with a second gear (30) through a rotating shaft, the third rack (27) and the second rack (25) are meshed with the second gear (30), and one side of the fixed seat (3) is provided with a first variable resistance mechanism (7).

7. The coal mine production wastewater treatment device according to claim 6, characterized in that, The first variable resistance mechanism (7) comprises a first resistance rod (701) and a first sliding contact block (702), the first resistance rod (701) is fixedly arranged in the fixed seat (3), the first sliding contact block (702) is fixedly connected with the adjusting rod (28), the top of the first resistance rod (701) is connected with a first circuit, one side in the fixed seat (3) is fixedly provided with an electromagnet (16), the electromagnet (16) is connected with the first resistance rod (701) in series, one side in the fixed seat (3) is slidably provided with an adjusting block (13), one side of the adjusting block (13) is fixedly connected with a first rack (17), the first rack (17) is slidably connected with the fixed seat (3), one side of the adjusting block (13) is fixedly connected with a second spring (14), the other side of the adjusting block (13) is fixedly connected with a magnetic block (15), and the acting force between the magnetic block (15) and the electromagnet (16) is repulsion.

8. The coal mine production wastewater treatment device according to claim 7, characterized in that, The top of the shunt pipe (21) is rotatably provided with a first gear (18), the first gear (18) is meshed with the first rack (17), the bottom of the first gear (18) is fixedly connected with two moving rods (31), the bottom of the moving rod (31) is fixedly connected with an adjusting sleeve (33), the adjusting sleeve (33) is rotatably connected with the shunt pipe (21), and the arc surface of the adjusting sleeve (33) is provided with a plurality of adjusting grooves (34).

9. The coal mine production wastewater treatment device according to claim 7, characterized in that, The second variable resistance mechanism (8) further comprises two third resistance rods (803), the third resistance rods (803) are fixedly arranged in the fixed seat (3), the outer side of the third resistance rod (803) is slidably sleeved with a third sliding contact block (804), the end of the third resistance rod (803) away from the adjusting block (13) is fixedly connected with the bottom of the second resistance rod (801) close to the adjusting block (13), one end of the third resistance rod (803) close to the adjusting block (13) is connected with a second circuit, and the end of the third resistance rod (803) connected with the circuit is close to one end of the second resistance rod (801), and the bottom end of the second resistance rod (801) away from the adjusting block (13) is connected with the second circuit.

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