CN214654138U - Softening and precipitating system for coal mine water - Google Patents
Softening and precipitating system for coal mine water Download PDFInfo
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- CN214654138U CN214654138U CN202120436316.0U CN202120436316U CN214654138U CN 214654138 U CN214654138 U CN 214654138U CN 202120436316 U CN202120436316 U CN 202120436316U CN 214654138 U CN214654138 U CN 214654138U
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Abstract
The utility model discloses a colliery mine water soften sedimentation system, it includes feed bin, electromagnetic vibration batcher, bucket elevator, digester, production water pipeling, drags for sediment machine, lime jar, mechanical stirring depositing reservoir and mine water pipeling. The advantages are that: the utility model has simple structure and easy realization, realizes the automatic adjustment of the adding amount of the quicklime and the lime cream, ensures the stable feeding of the quicklime, further ensures the softening effect of the mine water sedimentation in the mechanical stirring clarification tank, ensures the qualified quality of the effluent water of the mechanical stirring clarification tank, and simultaneously greatly reduces the workload of operators; the environment and the human health are protected; the utilization rate of the quicklime is improved, and the consumption of raw materials is saved; the operating efficiency of the mechanical stirring clarification tank is improved.
Description
The technical field is as follows:
the utility model relates to a soften sedimentation system, in particular to soften sedimentation system of colliery mine water.
Background art:
coal is a main energy source in China, a large amount of water resource support is needed for development of the coal industry, and important restriction factors influencing development of the coal industry in China when water resources are insufficient are particularly needed urgently in water-deficient areas in North China and northwest China of main coal resource producing areas. The coal mine water treatment and utilization not only broadens and develops water resources, but also is the best choice for relieving the problem of water shortage in mining areas, and is an important way for protecting ecological environment and preventing water pollution; the softening precipitation is the first process step for treating mine water, and the current softening precipitation treatment mode mainly comprises the following steps: 1. putting quicklime into a bin, then discharging by manually operating a gate valve, then preparing the quicklime into a lime milk solution with the concentration of 10% by a digester, then sending the lime milk to a mixing tank by a pump to be mixed and reacted with mine water, finally entering a mechanical stirring clarification tank for precipitation, arranging an online pH meter on a water outlet pipe of the mechanical stirring clarification tank, and manually adjusting the discharge amount of the quicklime according to the numerical value of the pH meter; 2. changing a manually operated gate valve into a spiral conveyor, and mechanically conveying the quicklime; the following problems exist with the two approaches: 1. the quicklime is added manually, so that the concentration of lime milk is unstable due to unstable feeding of the quicklime, the subsequent mine water precipitation softening effect is poor, and the effluent quality of a mechanical stirring clarification tank is poor; 2. the quick lime is conveyed by a screw conveyor, and is a solid particulate matter, so that the quick lime is seriously abraded and is easy to jam, and the blanking amount of the quick lime is not easy to adjust; 3. the reaction temperature in the digester is not fixed due to unstable blanking of the quicklime, when the temperature is too high, dust and water vapor at the tail end of the digester are large, the damage to the environment and human bodies is large, and when the temperature is too low, the conversion rate of the quicklime into the mature lime is low; 4. the mixed liquid mixed by the mixing tank enters the mechanical stirring clarification tank through a pipeline, so that the condition of scaling and even blockage in the pipeline is very easy to occur, and the operation efficiency of the mechanical stirring clarification tank is reduced; 5. the blanking amount of the quicklime is adjusted through the display value on the online pH meter, so that the blanking amount of the quicklime is adjusted and lagged, and further the pH fluctuation of the effluent of the mechanical stirring clarification tank is large, and the effluent quality does not reach the standard.
The utility model has the following contents:
an object of the utility model is to provide a simple structure has improved quick lime utilization ratio, and has guaranteed the softening sedimentation system of the qualified colliery mine water of mechanical stirring depositing reservoir effluent quality of water.
The utility model discloses by following technical scheme implement: a softening and precipitating system for coal mine water comprises a stock bin, an electromagnetic vibration feeder, a bucket elevator, a digester, a production water pipeline, a slag dragging machine, a lime cylinder, a mechanical stirring and clarifying tank and a mine water pipeline; a feed opening of the bin is communicated with a feed opening of the electromagnetic vibration feeder; the discharge hole of the electromagnetic vibrating feeder is communicated with the feed inlet of the bucket elevator through flexible connection; the discharge hole of the bucket elevator is communicated with the feed inlet of the digester; the water outlet end of the production water pipeline is communicated with the water inlet of the digester; the liquid outlet of the digester is communicated with the feed inlet of the slag conveyor; the liquid outlet of the slag conveyor is communicated with the liquid inlet of the lime cylinder; the liquid outlet of the lime cylinder is communicated with the inlet of a medicament adding pipe of the mechanical stirring and clarifying tank through a screw pump; the mine water pipeline is communicated with a water inlet of the mechanical stirring clarification tank; a concentration sensor is arranged in the lime cylinder; the signal output end of the concentration sensor is connected with the signal input end of the controller through a signal; and the signal output end of the controller is respectively in signal connection with the signal input ends of the electromagnetic vibration feeder and the screw pump.
Further, the device also comprises a heating tank, a steam pipeline, a temperature sensor and a control valve; the water outlet end of the production water pipeline is communicated with the water inlet of the heating tank; the water outlet of the heating tank is communicated with the water inlet of the digester; the air outlet end of the steam pipeline is communicated with the air inlet of the heating tank; a temperature sensor is arranged on a pipeline between the heating tank and the digester, and the control valve is arranged on the steam pipeline; the signal output end of the temperature sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is in signal connection with the signal input end of the control valve.
Further, a flushing pipe is arranged above the slag remover; a plurality of spray heads are arranged on the flushing pipe; the water inlet end of the flushing pipe is communicated with the water outlet end of the production water pipeline.
Further, a bubbler is arranged in the lime cylinder; and the air inlet of the bubbler is communicated with the air outlet of the blower.
Further, a filter screen is fixedly arranged above the lime cylinder; the liquid inlet of the lime cylinder is positioned above the filter screen.
Further, the electromagnetic vibration feeder is obliquely and downwards arranged from the feeding hole to the discharging hole, and the inclination angle of the electromagnetic vibration feeder is 5 degrees.
Further, the outlet of the medicament adding pipe is arranged in the first reaction chamber of the mechanical stirring clarification tank.
Further, the distance between the outlet of the medicament adding pipe and the stirring impeller of the mechanical stirring clarification tank is 30 cm.
The utility model has the advantages that: 1. the utility model discloses simple structure, the easy realization detects the concentration value of lime milk solution in the lime jar through concentration sensor to with signal transmission to the controller, when the concentration value of lime milk exceeded and sets for the upper limit value, controller control electromagnetic vibration batcher and screw pump turned down, reduce the feed volume of quick lime and lime milk solution; when the concentration value of the lime milk is lower than the set lower limit value, the controller controls the electromagnetic vibration feeder and the screw pump to be adjusted to be large, the feeding amount of the quicklime and the lime milk solution is increased, the adding amount of the quicklime and the lime milk is automatically adjusted, the feeding of the quicklime is stable, the effect of depositing and softening mine water in the mechanical stirring clarification tank is ensured, the effluent quality of the mechanical stirring clarification tank is qualified, and meanwhile, the workload of operators is greatly reduced; the reaction in the digester is stable due to stable feeding of the quicklime, so that the problems of dust at the tail end of the digester and large water vapor are avoided, and the environment and the human health are protected; 2. by heating the production water entering the digester, the initial reaction temperature of the quicklime and the water in the digester is ensured to be about 20 ℃, the reaction rate of the quicklime and the water is improved, the quicklime and the water are ensured to be fully reacted to generate hydrated lime, the utilization rate of the quicklime is improved, and the consumption of raw materials is saved; 3. the lime milk solution is directly sent to the mechanical stirring clarification tank to react with the mine water, the precipitate of calcium carbonate, magnesium carbonate and the like generated by the reaction is discharged from the bottom of the mechanical stirring clarification tank, and the supernatant overflows from the upper part of the mechanical stirring clarification tank, so that the problems of scaling and blockage of a pipeline can be avoided, and the operation efficiency of the mechanical stirring clarification tank is further improved; 4. compared with a screw conveyor, the electromagnetic vibration feeder has the advantages of low failure rate, low power consumption, low equipment abrasion and more accurate adjustable range of the addition amount of the quicklime.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a control system diagram of the present invention.
The parts in the drawings are numbered as follows:
the system comprises a storage bin 1, an electromagnetic vibrating feeder 2, a bucket elevator 3, a digester 4, a production water pipeline 5, a slag conveyor 6, a lime cylinder 7, a mechanical stirring clarification tank 8, a first reaction chamber 81, a stirring impeller 82, a mine water pipeline 9, a heating tank 10, a steam pipeline 11, a temperature sensor 12, a control valve 13, a screw pump 14, a concentration sensor 15, a controller 16, a flushing pipe 17, a spray head 18, a bubbler 19, a blower 20, a filter screen 21 and a medicament adding pipe 22.
The specific implementation mode is as follows:
as shown in fig. 1-2, a softening and settling system for coal mine water comprises a stock bin 1, an electromagnetic vibration feeder 2, a bucket elevator 3, a digester 4, a production water pipeline 5, a slag conveyor 6, a lime cylinder 7, a mechanical stirring and clarifying tank 8, a mine water pipeline 9, a heating tank 10, a steam pipeline 11, a temperature sensor 12 and a control valve 13; the feed opening of the bin 1 is communicated with the feed opening of the electromagnetic vibration feeder 2, and compared with a screw conveyor, the electromagnetic vibration feeder 2 has the advantages of low failure rate, low power consumption, low equipment abrasion and more accurate adjustable range of the addition amount of quicklime; the electromagnetic vibration feeder 2 is obliquely and downwards arranged from the feeding hole to the discharging hole, the inclination angle of the electromagnetic vibration feeder 2 is 5 degrees, and the continuous feeding operation is ensured; the discharge port of the electromagnetic vibrating feeder 2 is communicated with the feed port of the bucket elevator 3 through flexible connection, so that the sealing connection is realized, and the dust pollution is effectively prevented; the discharge hole of the bucket elevator 3 is communicated with the feed inlet of the digester 4; the water outlet end of the production water pipeline 5 is communicated with the water inlet of the digester 4; the liquid outlet of the digester 4 is communicated with the feed inlet of the slag conveyor 6; the liquid outlet of the slag conveyor 6 is communicated with the liquid inlet of the lime cylinder 7; the liquid outlet of the lime cylinder 7 is communicated with the inlet of a medicament adding pipe 22 of the mechanical stirring clarification tank 8 through a screw pump 14; the mine water pipeline 9 is communicated with a water inlet of the mechanical stirring clarification tank 8; a concentration sensor 15 is arranged in the lime cylinder 7; the signal output end of the concentration sensor 15 is connected with the signal input end of the controller 16 through signals; and the signal output end of the controller 16 is respectively in signal connection with the signal input ends of the electromagnetic vibration feeder 2 and the screw pump 14.
The water outlet end of the production water pipeline 5 is communicated with the water inlet of the heating tank 10; the water outlet of the heating tank 10 is communicated with the water inlet of the digester 4; the air outlet end of the steam pipeline 11 is communicated with the air inlet of the heating tank 10; a temperature sensor 12 is arranged on a pipeline between the heating tank 10 and the digester 4, and a control valve 13 is arranged on a steam pipeline 11; the signal output end of the temperature sensor 12 is in signal connection with the signal input end of the controller 16; a signal output of the controller 16 is connected to a signal input of the control valve 13 by means of a signal.
A flushing pipe 17 is arranged above the inside of the slag conveyor 6; a plurality of spray heads 18 are arranged on the flushing pipe 17; the end of intaking of flushing pipe 17 communicates with the play water end of production water pipeline 5, washes drags for the inside of sediment machine 6, guarantees drags for sediment machine 6 not by the card dead at the in-process of operation, realizes its continuous operation.
A bubbler 19 is arranged in the lime cylinder 7; the air inlet of the bubbler 19 is communicated with the air outlet of the air blower 20, and the bubbler 19 is used for stirring the lime emulsion in the lime cylinder 7 by using compressed air, so that the lime emulsion is uniformly mixed without precipitation and delamination; a filter screen 21 is fixedly arranged above the lime cylinder 7; the liquid inlet of the lime cylinder 7 is positioned above the filter screen 21.
The outlet of the chemical adding pipe 22 is arranged in the first reaction chamber 81 of the mechanical stirring clarification tank 8, and the distance from the outlet of the chemical adding pipe 22 to the stirring impeller 82 of the mechanical stirring clarification tank 8 is 30cm, so that the lime milk solution entering the mechanical stirring clarification tank 8 from the outlet of the chemical adding pipe 22 is fully and uniformly mixed with the mine water.
The working principle is as follows: the quick lime in the storage bin 1 is conveyed into the digester 4 through the electromagnetic vibrating feeder 2 and the bucket elevator 3, the production water enters the heating tank 10 and is heated through steam, the temperature sensor 12 constantly detects the temperature value of the heated production water and transmits a signal to the controller 16, when the detected temperature reaches a set value of 20 ℃, the controller 16 controls the control valve 13 to be closed, the steam is stopped to be introduced, and when the temperature is lower than the set value of 20 ℃, the controller 16 controls the control valve 13 to be opened and starts to introduce the steam; the heated production water is sent into the slaker 4 to carry out exothermic reaction with the quicklime to generate slaked lime solution (namely lime milk solution), the initial reaction temperature of the quicklime and the water in the slaker 4 is ensured to be about 20 ℃, the reaction rate of the quicklime and the water is improved, the quicklime and the water are fully reacted to generate slaked lime, the utilization rate of the quicklime is improved, the consumption of raw materials is saved, the reacted lime milk solution is sent into the slag salvaging machine 6 to carry out slag salvaging treatment, all unreacted slag is fished out and then is filtered by the filter screen 21 and then is sent into the lime cylinder 7 for temporary storage, the concentration sensor 15 detects the concentration value of the lime milk solution in the lime cylinder 7 at any moment and transmits signals to the controller 16, when the concentration value of the lime milk exceeds a set upper limit value, the controller 16 controls the electromagnetic vibration feeder 2 and the screw pump 14 to be adjusted to be smaller, reducing the feeding amount of the quicklime and the lime milk solution; when the concentration value of the lime milk is lower than the set lower limit value, the controller 16 controls the electromagnetic vibration feeder 2 and the screw pump 14 to be adjusted to be large, the feeding amount of the quicklime and the lime milk solution is increased, the adding amount of the quicklime and the lime milk is automatically adjusted, the feeding of the quicklime is stable, the effect of depositing and softening mine water in the mechanical stirring clarification tank 8 is ensured, the effluent quality of the mechanical stirring clarification tank 8 is qualified, and meanwhile, the workload of operators is greatly reduced; the reaction in the digester 4 is stable due to stable feeding of the quicklime, so that the problems of dust at the tail end of the digester 4 and large water vapor are avoided, and the environment and the human health are protected; the lime milk solution in the lime cylinder 7 is sent to the mechanical stirring and clarifying tank 8 through the screw pump 14 to react with the mine water, the precipitate of calcium carbonate, magnesium carbonate and the like generated by the reaction is discharged from the bottom of the mechanical stirring and clarifying tank 8, and the supernatant overflows from the upper part of the mechanical stirring and clarifying tank 8, so that the problems of scaling and blockage of pipelines can not occur, the operation efficiency of the mechanical stirring and clarifying tank 8 is further improved, and the softening and precipitation of the mine water are realized; the utility model discloses simple structure easily realizes.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A softening and precipitating system for mine water in a coal mine is characterized by comprising a stock bin, an electromagnetic vibration feeder, a bucket elevator, a digester, a production water pipeline, a slag dragging machine, a lime cylinder, a mechanical stirring and clarifying tank and a mine water pipeline;
a feed opening of the bin is communicated with a feed opening of the electromagnetic vibration feeder; the discharge hole of the electromagnetic vibrating feeder is communicated with the feed inlet of the bucket elevator through flexible connection; the discharge hole of the bucket elevator is communicated with the feed inlet of the digester; the water outlet end of the production water pipeline is communicated with the water inlet of the digester; the liquid outlet of the digester is communicated with the feed inlet of the slag conveyor; the liquid outlet of the slag conveyor is communicated with the liquid inlet of the lime cylinder; the liquid outlet of the lime cylinder is communicated with the inlet of a medicament adding pipe of the mechanical stirring and clarifying tank through a screw pump; the mine water pipeline is communicated with a water inlet of the mechanical stirring clarification tank;
a concentration sensor is arranged in the lime cylinder; the signal output end of the concentration sensor is connected with the signal input end of the controller through a signal; and the signal output end of the controller is respectively in signal connection with the signal input ends of the electromagnetic vibration feeder and the screw pump.
2. The softening and precipitating system for the coal mine water according to claim 1, further comprising a heating tank, a steam pipeline, a temperature sensor and a control valve; the water outlet end of the production water pipeline is communicated with the water inlet of the heating tank; the water outlet of the heating tank is communicated with the water inlet of the digester; the air outlet end of the steam pipeline is communicated with the air inlet of the heating tank;
a temperature sensor is arranged on a pipeline between the heating tank and the digester, and the control valve is arranged on the steam pipeline; the signal output end of the temperature sensor is in signal connection with the signal input end of the controller; and the signal output end of the controller is in signal connection with the signal input end of the control valve.
3. The softening and precipitating system for the coal mine water according to claim 1, wherein a flushing pipe is arranged above the slag remover; a plurality of spray heads are arranged on the flushing pipe; the water inlet end of the flushing pipe is communicated with the water outlet end of the production water pipeline.
4. The softening and precipitating system for the coal mine water according to claim 1, wherein a bubbler is arranged in the lime cylinder; and the air inlet of the bubbler is communicated with the air outlet of the blower.
5. The softening and precipitating system for the coal mine water according to claim 1 or 4, wherein a filter screen is fixedly arranged above the lime cylinder; the liquid inlet of the lime cylinder is positioned above the filter screen.
6. The softening and precipitating system for coal mine water according to claim 1, wherein the electromagnetic vibration feeder is arranged obliquely downwards from the feed port to the discharge port, and the inclination angle of the electromagnetic vibration feeder is 5 degrees.
7. The softening and settling system for coal mine water according to claim 1, wherein an outlet of the chemical adding pipe is arranged in the first reaction chamber of the mechanical stirring clarification tank.
8. The softening and settling system for coal mine water according to claim 7, wherein the distance from the outlet of the chemical adding pipe to the stirring impeller of the mechanical stirring clarifier is 30 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120436316.0U CN214654138U (en) | 2021-02-26 | 2021-02-26 | Softening and precipitating system for coal mine water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120436316.0U CN214654138U (en) | 2021-02-26 | 2021-02-26 | Softening and precipitating system for coal mine water |
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| Publication Number | Publication Date |
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| CN214654138U true CN214654138U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120436316.0U Active CN214654138U (en) | 2021-02-26 | 2021-02-26 | Softening and precipitating system for coal mine water |
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2021
- 2021-02-26 CN CN202120436316.0U patent/CN214654138U/en active Active
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