Mine wastewater treatment equipment and mine wastewater treatment method

Abstract

The invention discloses mine wastewater treatment equipment and a mine wastewater treatment method, the mine wastewater treatment equipment is provided with a steam power generation device, the steam power generation device utilizes waste heat or energy of water vapor to generate power, and then the power can be supplied to an electric heating plate through an output circuit, so that the waste heat of the water vapor is fully utilized, and the mains supply of electric appliances such as the electric heating plate is saved; and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mine wastewater treatment, and in particular to mine wastewater treatment equipment and a mine wastewater treatment method. Background Art

[0002] Wastewater treatment is the use of physical, chemical and biological methods to treat wastewater, purify the wastewater, reduce pollution, and even recycle and reuse wastewater to make full use of water resources.

[0003] A large amount of wastewater is generated during the mining process. Salt remains in the wastewater. If the wastewater is directly discharged to the outside after filtration and purification, the nutrients contained in the water will not be treated, which will cause the surrounding land to be too alkaline, resulting in land impoverishment and reducing the effect of wastewater desalination treatment.

[0004] Therefore, desalination is carried out during the wastewater treatment process. Desalination generally uses heating to heat the filtered wastewater into water vapor to achieve desalination. During the heating desalination process, the amount of water vapor generated is very large.

[0005] In the prior art, the generated water vapor is usually condensed into condensed water for recycling, which results in the complete waste of the heat of the water vapor, and the waste heat is not fully utilized. The heating plate is always powered by the mains, which results in high power consumption and is not conducive to reducing production costs. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a new type of mine wastewater treatment equipment and mine wastewater treatment method. The steam power generation device uses the waste heat or energy of water vapor to generate electricity, and then can supply power to the electric heating plate through the output circuit, thereby making full use of the waste heat of water vapor, saving the mains electricity consumption of electrical appliances such as the electric heating plate, and helping to reduce production costs.

[0007] The technical solution of the present invention provides a mine wastewater treatment device, including a control unit and a filtering device, a stirring device, a wastewater conveying mechanism, a desalting device, a steam recovery device and a steam power generation device connected in sequence;

[0008] The desalination device comprises a desalination treatment box, the wastewater delivery pipe of the wastewater delivery mechanism is connected to the top of the desalination treatment box, an electric heating plate is installed on the treatment box bottom plate of the desalination treatment box, and a plurality of nozzles connected to the wastewater delivery pipe are arranged above the electric heating plate in the desalination treatment box;

[0009] The steam recovery device comprises a steam recovery box, an air extraction pipe connected to the steam recovery box, and an air extraction pump connected to the air extraction pipe, wherein the air extraction end of the air extraction pipe is connected to the desalination treatment box;

[0010] The steam power generation device comprises a steam generator, a transformer, a storage battery and an output circuit, and the steam recovery tank is connected to the steam generator via a steam conveying mechanism;

[0011] The electric heating plate is connected to the municipal circuit and the output circuit, and the output circuit and the municipal circuit are respectively provided with an electric control switch and an ammeter connected to the control unit signal;

[0012] When the current I1 of the output circuit meets the rated current I0 of the electric heating plate, the output circuit alone supplies power to the electric heating plate.

[0013] In one of the optional technical solutions, the municipal circuit is provided with a variable resistor capable of automatically adjusting resistance, and the variable resistor is signal-connected to the control unit;

[0014] When the current I1 of the output circuit is less than the rated current I0 of the electric heating plate, the municipal circuit and the output circuit together supply power to the electric heating plate;

[0015] The variable resistor adjusts its resistance accordingly, and the municipal circuit supplies a current I2 = I0 - I1 to the electric heating plate.

[0016] In one of the optional technical solutions, a pressure regulating slide plate for regulating air pressure is installed in the steam recovery box, and the pressure regulating slide plate is sealed and slidably connected to the steam recovery box;

[0017] One side of the pressure regulating slide plate is an air storage cavity, a barometer is installed in the air storage cavity, the air extraction pipe is connected to the air storage cavity, and the steam delivery pipe of the steam delivery mechanism is connected to the top of the air storage cavity;

[0018] The steam recovery box is provided with a slide driving mechanism for driving the pressure regulating slide to slide and adjust;

[0019] The slide plate driving mechanism and the barometer are respectively connected to the control unit by signals.

[0020] In one of the optional technical solutions, the preset air pressure in the air storage chamber is P0;

[0021] If the current air pressure in the air storage chamber is P1<P0, the pressure regulating slide is driven by the slide driving mechanism to move and reduce the volume of the air storage chamber until P1=P0;

[0022] If the current air pressure in the air storage chamber is P1>P0, the pressure regulating slide plate is driven by the slide plate driving mechanism to move to increase the volume of the air storage chamber until P1=P0.

[0023] In one of the optional technical solutions, the desalination device includes a scraper mechanism;

[0024] The scraper mechanism comprises a scraper and an electric push rod for driving the scraper to move linearly, and the scraper is slidably arranged on the top surface of the electric heating plate;

[0025] A material discharge port is provided on the bottom plate of the processing box, and an electric sliding cover capable of automatically opening and closing is installed in the material discharge port;

[0026] The electric sliding cover and the electric push rod are respectively connected to the control unit by signal;

[0027] The electric sliding cover and the electric push rod are connected to the municipal circuit and the output circuit respectively.

[0028] In one of the optional technical solutions, a weighing sensor is provided on the bottom plate of the processing box, and the electric heating plate falls on the weighing sensor;

[0029] The weighing sensor is connected to the control unit by signal;

[0030] When the weighing sensor detects that the current weight G1 of the electric heating plate is greater than the preset weight threshold G0 of the electric heating plate, the electric push rod and the electric sliding cover are automatically opened.

[0031] In one of the optional technical solutions, the desalination treatment box is equipped with a detachable and replaceable filter screen, a water collecting funnel under the filter screen, a guide pipe connected to the water collecting funnel and extending downward, and a multi-way pipe connected to the guide pipe;

[0032] The plurality of nozzles are respectively connected to the multi-way pipe;

[0033] A sealing baffle is also installed in the desalination treatment box, the sealing baffle is located between the multi-way pipe and the water collecting funnel, and the guide pipe passes through the sealing baffle;

[0034] The exhaust end of the exhaust pipe is located below the sealing partition.

[0035] In one of the optional technical solutions, the filtering device includes a filtering tank, the top of which is connected to a water inlet pipe, a filter cotton mesh layer, an activated carbon layer, a fine sand layer and a coarse sand layer are sequentially arranged in the filtering tank from bottom to top, and the bottom of the filtering tank is connected to a drain pipe;

[0036] A fixed bracket is installed on the top of the stirring device, the filter tank is installed on the fixed bracket, and the downpipe is connected to the stirring device.

[0037] In one of the optional technical solutions, the stirring device includes a stirring box, and the fixed bracket is installed on the stirring box;

[0038] A stirring screw is installed in the stirring box, and a motor for driving the stirring screw to rotate is installed on the outside of the stirring box, and the motor is connected to the control unit by signal;

[0039] The motor is connected to the municipal circuit and the output circuit;

[0040] A flocculant adding pipe is installed on the top of the stirring box.

[0041] The technical solution of the present invention also provides a method for treating mine wastewater, using the mine wastewater treatment equipment described in any of the above technical solutions;

[0042] The mine wastewater treatment method comprises the following steps:

[0043] S01: introducing wastewater into the filtering device for preliminary filtration;

[0044] S02: introducing the preliminarily filtered wastewater into the stirring device for stirring and sedimentation;

[0045] S03: introducing the wastewater after stirring and settling into the desalination device through a wastewater conveying mechanism for desalination treatment;

[0046] S04: collecting the water vapor in the desalination treatment box into the steam recovery device;

[0047] S05: transporting the water vapor in the steam recovery device to the steam power generation device to generate electricity;

[0048] When the current I1 of the output circuit meets the rated current I0 of the electric heating plate, the output circuit alone supplies power to the electric heating plate;

[0049] When the current I1 of the output circuit is lower than the rated current I0 of the electric heating plate, the municipal circuit alone supplies power to the electric heating plate, and the current of the output circuit is stored in the battery; or, the municipal circuit and the output circuit together supply power to the electric heating plate.

[0050] The above technical solution has the following beneficial effects:

[0051] The mine wastewater treatment equipment and mine wastewater treatment method provided by the present invention are equipped with a steam power generation device, which uses the waste heat or energy of water vapor to generate electricity, and then can supply power to the electric heating plate through the output circuit, thereby making full use of the waste heat of water vapor, saving the mains electricity consumption of electrical appliances such as the electric heating plate, and helping to reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0053] Figure 1 A schematic diagram of the structure of a mine wastewater treatment device provided by an embodiment of the present invention;

[0054] Figure 2 for Figure 1 The internal structure diagram of the mine wastewater treatment equipment shown;

[0055] Figure 3 It is a structural schematic diagram of a desalination device;

[0056] Figure 4 This is a schematic diagram of a material discharge port being provided on the bottom plate of the processing box;

[0057] Figure 5 It is a schematic diagram of the connection between the vacuum pipe and the vacuum pump;

[0058] Figure 6 It is a schematic diagram of the signal connection between each electrical component and the control unit;

[0059] Figure 7 A schematic diagram of a variable resistor having a structure;

[0060] Figure 8 It is a schematic diagram of a steam recovery box provided with a pressure regulating slide plate and a slide plate driving mechanism;

[0061] Fig. 9 It is a schematic diagram of a feed opening equipped with an electric sliding cover;

[0062] Fig.10 is a schematic diagram of a steam power generation device;

[0063] Fig.11 It is a schematic diagram of the connection between the electric heating panel and the municipal circuit and the output circuit. DETAILED DESCRIPTION

[0064] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The same components are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0065] like Figure 1-3 , Figure 6 and Figure 10-11As shown, a mine wastewater treatment device provided by one embodiment of the present invention includes a control unit 10 and a filtering device 1, a stirring device 2, a wastewater conveying mechanism 3, a desalination device 4, a steam recovery device 5 and a steam power generation device 6 connected in sequence.

[0066] The desalination device 4 includes a desalination treatment box 41, the wastewater conveying pipe 32 of the wastewater conveying mechanism 3 is connected to the top of the desalination treatment box 41, an electric heating plate 42 is installed on the treatment box bottom plate 411 of the desalination treatment box 41, and a plurality of nozzles 43 connected to the wastewater conveying pipe 32 are arranged above the electric heating plate 42 in the desalination treatment box 41.

[0067] The steam recovery device 5 comprises a steam recovery box 51 , an air extraction pipe 52 connected to the steam recovery box 51 , and an air extraction pump 53 connected to the air extraction pipe 52 . The air extraction end 521 of the air extraction pipe 52 is connected to the desalination treatment box 41 .

[0068] The steam power generation device 6 includes a steam generator 61 , a transformer 62 , a battery 63 and an output circuit 64 . The steam recovery tank 51 is connected to the steam generator 61 via a steam transport mechanism 7 .

[0069] The electric heating plate 42 is connected to the municipal circuit 100 and the output circuit 64 . The output circuit 64 and the municipal circuit 100 are respectively provided with an electric control switch 200 and an ammeter 300 which are connected to the control unit 10 by signal.

[0070] When the current I1 of the output circuit 64 meets the rated current I0 of the electric heating plate 42 , the output circuit 64 alone supplies power to the electric heating plate 42 .

[0071] The mine wastewater treatment equipment provided by the present invention is used for purifying and desalting mine wastewater, and can utilize the water vapor generated during desalination to generate electricity, which is then used to supply power to electrical devices. While utilizing waste heat, it also saves electricity consumption, which is beneficial to reducing production costs.

[0072] The mine wastewater treatment equipment includes a filtering device 1, a stirring device 2, a wastewater conveying mechanism 3, a desalting device 4, a steam recovery device 5, a steam power generation device 6, a steam conveying mechanism 7 and a control unit 10, etc.

[0073] The control unit 10 can be a controller, a chip, a computer, etc., and is used to receive and send signals and control the switching of various electrical components.

[0074] The filtering device 1, the stirring device 2, the wastewater conveying mechanism 3, the desalting device 4, the steam recovery device 5 and the steam power generation device 6 are directly connected or connected through pipelines in sequence to realize the circulation of water and water vapor.

[0075] Preferably, the filtering device 1 , the stirring device 2 , the wastewater conveying mechanism 3 , the desalination device 4 , the steam recovery device 5 and the steam power generation device 6 are integrated on the base 9 .

[0076] The filter device 1 is used for preliminary filtering of incoming mine wastewater. The liquid outlet of the filter device 1 is connected to the liquid inlet of the stirring device 2, and the mine wastewater after preliminary filtering by the filter device 1 enters the stirring device 2.

[0077] The stirring device 2 is used to stir the mine wastewater and add flocculants to coagulate the impurities remaining in the wastewater to facilitate re-filtration and treatment.

[0078] The wastewater conveying mechanism 3 is used to convey the mine wastewater treated by the stirring device 2 to the desalination device 4. The wastewater conveying mechanism 3 includes a water pump 31 and a wastewater conveying pipe 32, the liquid inlet end of the wastewater conveying pipe 32 is connected to the liquid outlet end of the stirring device 2, and the liquid outlet end of the wastewater conveying pipe 32 is connected to the desalination device 4. A bracket can be provided on the housing of the stirring device 2 or the desalination device 4 to install the water pump 31. The water pump 31 is connected to the control unit 10 through a wire to realize signal transmission. The automatic switch of the water pump 31 is controlled by the control unit 10.

[0079] The desalination device 4 is used to desalinate the incoming mine wastewater. The desalination device 4 includes a desalination treatment box 41, and an opening is provided on the treatment box top plate of the desalination treatment box 41. The liquid outlet end of the wastewater delivery pipe 32 is inserted into the desalination treatment box 41 from the opening of the treatment box top plate. An electric heating plate 42 is installed on the bottom plate 411 of the treatment box, which is used to heat the mine wastewater to make it into water vapor, and the salt in the mine wastewater will fall off and fall on the electric heating plate 42 to achieve desalination of the mine wastewater. A plurality of nozzles 43 are provided in the desalination treatment box 41, which are connected to the wastewater delivery pipe 32 and are located above the electric heating plate 42. The plurality of nozzles 43 are used to spray mist-like mine wastewater onto the electric heating plate 42 so that the electric heating plate 42 heats the water mist into water vapor. The temperature of the water vapor is higher than 120°C, which is sufficient for a micro steam generator to generate electricity.

[0080] The steam recovery device 5 is used to collect water vapor in the desalination treatment box 41. The steam recovery device 5 includes a steam recovery box 51, an exhaust pipe 52 and an exhaust pump 53. The exhaust end 521 of the exhaust pipe 52 is connected to the desalination treatment box 41, and the exhaust end of the exhaust pipe 52 is connected to the steam recovery box 51. The exhaust pump 53 is connected to the control unit 10 through a wire to achieve signal transmission. The automatic switch of the exhaust pump 53 is controlled by the control unit 10. Under the suction of the exhaust pump 53, the water vapor in the desalination treatment box 41 enters the exhaust pipe 52 through the exhaust end 521, and then enters the steam recovery box 51 through the exhaust end.

[0081] Preferably, the air extraction end 521 is located above the nozzle 43 , and extracts the water vapor above the nozzle 43 , but does not extract the water mist sprayed from the nozzle 43 .

[0082] Preferably, if Figure 3 and Figure 5 As shown, the exhaust end 521 is provided with a plurality of exhaust hoods 522, on which a plurality of micropores are provided to filter and block the entry of particulate impurities.

[0083] The steam power generation device 6 uses water vapor to generate electricity, and includes a steam generator 61, a transformer 62, a battery 63, an output circuit 64, etc. Parameters such as the power of the steam generator 61 can be selected according to specific working conditions. The steam generator 61 can be arranged separately from the steam recovery device 5, or it can be integrated on the steam recovery box 51. The steam generator 61 is connected to the transformer 62 through a circuit, and the current generated by the steam generator 61 is transformed into 220V by the transformer 62. The transformer 62 is connected to the output circuit 64, which can be used to power electrical devices. The transformer 62 is also connected to the battery 63 through a circuit, which can be used to store excess current for subsequent use. The battery 63 is connected to the output circuit 64, which can be used to power electrical devices. Regarding circuit design, reference can be made to the contents of the prior art, which will not be described in detail here.

[0084] The steam generator 61 is connected to the control unit 10 via a wire to achieve signal transmission. The control unit 10 controls the automatic switch of the steam generator 61 .

[0085] The steam delivery mechanism 7 is used to deliver the water vapor in the steam recovery box 51 to the steam generator 61. The steam delivery mechanism 7 includes an air suction pump and a steam delivery pipe 71, and the steam delivery pipe 71 is connected between the steam recovery box 51 and the steam generator 61. A bracket can be provided on the steam recovery box 51 to install the air suction pump.

[0086] On one hand, the electric heating plate 42 is connected to the municipal circuit 100. In the initial stage of starting the heating, the municipal circuit 100 mainly supplies power to the electric heating plate 42. The municipal circuit 100 is provided with an electric control switch 200 and an ammeter 300, which are connected to the control unit 10 through a wire. The ammeter 300 can transmit the current signal of the municipal circuit 100 to the control unit 10 for the control unit 10 to make a judgment. The control unit 10 can choose to disconnect or close the electric control switch 200 on the municipal circuit 100 according to the specific situation. When the electric control switch 200 on the municipal circuit 100 is disconnected, the municipal circuit 100 is disconnected from the electric heating plate 42 and no power is supplied. When the electric control switch 200 on the municipal circuit 100 is closed, the municipal circuit 100 is connected to the electric heating plate 42 for power supply.

[0087] On the other hand, the electric heating plate 42 is connected to the output circuit 64. After the electric heating plate 42 is heated for a period of time, the water vapor generated is enough for the steam generator 61 to generate electricity, and then the output circuit 64 can supply power to the electric heating plate 42. The output circuit 64 is also provided with an electric control switch 200 and an ammeter 300. The ammeter 300 can transmit the current signal of the output circuit 64 to the control unit 10 for the control unit 10 to make a judgment. The control unit 10 can choose to open or close the electric control switch 200 on the output circuit 64 according to the specific situation. When the electric control switch 200 on the output circuit 64 is opened, the output circuit 64 is disconnected from the electric heating plate 42 and no power is supplied. When the electric control switch 200 on the output circuit 64 is closed, the output circuit 64 is connected to the electric heating plate 42 for power supply.

[0088] Specifically, when the current I1 of the output circuit 64 meets the rated current I0 of the electric heating plate 42 , the output circuit 64 alone supplies power to the electric heating plate 42 , thereby saving commercial power consumption and reducing costs.

[0089] When the current I1 of the output circuit 64 is lower than the rated current I0 of the electric heating plate 42, the municipal circuit 100 supplies power to the electric heating plate 42 alone, and the current of the output circuit 64 is stored in the battery 63. When the stored current meets the rated current I0, the output circuit 64 supplies power to the electric heating plate 42 alone.

[0090] When the current I1 of the output circuit 64 is lower than the rated current I0 of the electric heating plate 42, the municipal circuit 100 and the output circuit 64 can also supply power to the electric heating plate 42. The current supplied to the electric heating plate 42 exceeds the rated current I0, but is within a safe range, thereby increasing the temperature of the water vapor to facilitate the steam generator 61 to generate electricity.

[0091] Of course, the power mechanism, water pump, air pump, etc. in the stirring device 2 can be distributedly connected to the municipal circuit 100 and the output circuit 64. When the current provided by the output circuit 64 is sufficient, it can supply power to various electrical components to save the municipal electricity. Since the electric heating plate 42 consumes the most electricity, it has the highest priority to use the current of the output circuit 64, that is, the current of the output circuit 64 is preferentially supplied to the electric heating plate 42.

[0092] The rated current I0 of the electric heating plate 42 can be selected and set according to its area, heating resistance and other parameters. The rated current I0 can be selected between 6-10A, the power of the electric heating plate 42 is between 4.5-6.0KW, the heating temperature of the electric heating plate 42 is between 200-350°C, and the temperature of the water vapor is between 160-220°C.

[0093] A control panel may be provided for user operation. The water generated by the steam generator 61 after generating electricity using steam may be transported to a designated location through a transmission pipeline.

[0094] The front side of the steam recovery box 51 is provided with an observation window, and the observation window is provided with a water level gauge 54. The bottom of the steam recovery box 51 is provided with a drain pipe 55. When the accumulated water in the steam recovery box 51 exceeds a certain water level, the valve on the drain pipe 55 is opened to drain the water. Generally, if the accumulated water in the steam recovery box 51 exceeds 10 centimeters, it needs to be drained to avoid affecting the humidity, air pressure, etc. of the water vapor in the steam recovery box 51.

[0095] In one embodiment, if Figure 6-7 and Fig.11 As shown, the municipal circuit 100 is provided with a variable resistor 400 capable of automatically adjusting resistance, and the variable resistor 400 is signal-connected to the control unit 10 .

[0096] When the current I1 of the output circuit 64 is less than the rated current I0 of the electric heating plate 42 , the utility circuit 100 and the output circuit 64 together provide power to the electric heating plate 42 .

[0097] The variable resistor 400 adjusts its resistance accordingly, and the municipal circuit 100 supplies the electric heating plate 42 with a current I2 = I0 - I1.

[0098] In this embodiment, a variable resistor 400 is configured on the municipal circuit 100, which is connected to the control unit 10 through a wire. The control unit 10 can control the variable resistor 400 to automatically adjust the resistance value to adjust the current in the municipal circuit 100, so that the sum of the current supplied to the electric heating plate 42 together with the output circuit 64 is the rated current I0.

[0099] Specifically, when the current I1 of the output circuit 64 is less than the rated current I0 of the electric heating plate 42, the municipal circuit 100 and the output circuit 64 together supply power to the electric heating plate 42, the control unit 10 adjusts the resistance value of the variable resistor 400 according to the current I1, and the municipal circuit 100 supplies the electric heating plate 42 with a current I2 = I0-I1.

[0100] In one embodiment, if Figure 7 As shown, the variable resistor 400 includes an insulating housing 401, an insulating seat 402 installed in the insulating housing 401, a resistor 403 installed on the insulating seat 402, a conductive rod 404 installed on the insulating seat 402 and spaced apart from the resistor 403, a conductive paddle 405 slidably connected to the resistor 403 and the conductive rod 404, and a paddle driving mechanism 408 for driving the conductive paddle 405 to slide. The paddle driving mechanism 408 is connected to the control unit 10 by signals.

[0101] One end of the conductive rod 404 has a connection terminal 406, and one end of the resistor 403 away from the connection terminal 406 has an outlet terminal 407. The municipal circuit 100 is connected to the connection terminal 406 and the outlet terminal 407.

[0102] The portion of the resistor 403 between the outlet terminal 407 and the conductive paddle 405 is the active portion of the resistor 403. Therefore, the resistance value of the resistor 403 can be adjusted by simply controlling the conductive paddle 405 to slide to adjust the distance between it and the outlet terminal 407, thereby adjusting the current supplied by the municipal circuit 100 to the electric heating plate 42. The control unit 10 can calculate the distance between the conductive paddle 405 and the outlet terminal 407 according to the current I2.

[0103] Assume that the total length of the resistor 403 is L, the resistance per unit length is R0, the voltage is U, and the current is I when the resistor 403 is fully loaded, I=U / L×R0.

[0104] When the current supplied by the municipal circuit 100 is I2, the distance between the conductive paddle 405 and the outlet terminal 407 is L1, then I2 = U / L1×R0,

[0105] Therefore, it can be calculated that L1 = I×L / I2.

[0106] In one embodiment, if Figure 7 As shown, the paddle driving mechanism 408 includes an insulating screw 4081 and a driving motor 4082 for driving the insulating screw 4081 to rotate, the driving motor 4082 is mounted on the insulating housing 401, the insulating screw 4081 is parallel to the conductive rod 404, the insulating screw 4081 is connected to the insulating housing 401 through a bracket 409, and the insulating screw 4081 is pivotally connected to the bracket 409. The conductive paddle 405 has an internal threaded hole, and the insulating screw 4081 passes through the internal threaded hole.

[0107] When the driving motor 4082 drives the insulating screw 4081 to rotate, the insulating screw 4081 causes the conductive paddle 405 to move along the axial direction of the insulating screw 4081 .

[0108] When the insulating screw 4081 rotates forward, the conductive paddle 405 slides toward the side of the connection terminal 406. When the insulating screw 4081 rotates backward, the conductive paddle 405 slides toward the side of the outlet terminal 407.

[0109] The driving motor 4082 is a servo motor or a stepping motor, which is connected to the control unit 10 by signals, and the control unit 10 controls the driving motor 4082 to rotate. The sliding distance of the conductive pick 405 can be calculated according to the number of turns of the insulating screw 4081 and the pitch of the thread, so as to accurately control the sliding distance of the conductive pick 405.

[0110] In one embodiment, if Figure 6 and Figure 8As shown, a pressure regulating slide plate 55 for regulating air pressure is installed in the steam recovery box 51 , and the pressure regulating slide plate 55 is sealed and slidably connected to the steam recovery box 51 .

[0111] One side of the pressure regulating slide plate 55 is an air storage chamber 54 , in which a barometer 57 is installed. The air extraction pipe 52 is connected to the air storage chamber 54 , and the steam delivery pipe 71 of the steam delivery mechanism 7 is connected to the top of the air storage chamber 54 .

[0112] A slide driving mechanism 56 for driving the pressure regulating slide 55 to slide and adjust is installed on the steam recovery box 51 .

[0113] The slide driving mechanism 56 and the air pressure gauge 57 are respectively connected to the control unit 10 for signals.

[0114] Generally, the gas pressure required for the steam generator 61 to generate electricity is above 1.6 MPa. Therefore, it is necessary to ensure the gas pressure of the steam supplied to the steam generator 61, and it is best to ensure that the gas pressure is stable, so as to facilitate the steam generator 61 to generate electricity stably.

[0115] In this embodiment, a pressure regulating slide plate 55 is installed in the steam recovery box 51, and a sealing ring is provided between the pressure regulating slide plate 55 and the shell of the steam recovery box 51, and the pressure regulating slide plate 55 can slide. If necessary, a linear guide rail can be provided between the shell of the steam recovery box 51 and the pressure regulating slide plate 55 to guide the pressure regulating slide plate 55 to slide linearly. One side of the pressure regulating slide plate 55 is an air storage chamber 54, and the air pressure in the air storage chamber 54 can be adjusted by adjusting the position of the pressure regulating slide plate 55.

[0116] The bottom of the air storage chamber 54 has an air inlet 511, and the top has an air outlet 512. The air inlet 511 and the air outlet 512 are respectively installed with a one-way valve 513. The exhaust end of the exhaust pipe 52 is connected to the air inlet 511, and the air inlet end of the steam delivery pipe 71 is connected to the air outlet 512.

[0117] A barometer 57 is installed in the air storage cavity 54 for real-time monitoring of the air pressure in the air storage cavity 54. The barometer 57 is connected to the control unit 10 by signal, and transmits the air pressure signal to the control unit 10 in real time.

[0118] A slide plate driving mechanism 56 is installed on the outside or inside of the steam recovery box 51, which is used to drive the pressure regulating slide plate 55 to slide. The slide plate driving mechanism 56 is connected to the control unit 10 by signal, and the control unit 10 controls the switch of the slide plate driving mechanism 56.

[0119] The slide plate driving mechanism 56 can be a piston driving mechanism, a motor screw driving mechanism, etc.

[0120] When the slide plate driving mechanism 56 drives the pressure regulating slide plate 55 to move toward the first direction, the volume of the air storage chamber 54 is reduced, and the air pressure in the air storage chamber 54 is increased.

[0121] When the slide driving mechanism 56 drives the pressure regulating slide 55 to move toward a second direction opposite to the first direction, the volume of the air storage chamber 54 increases and the air pressure in the air storage chamber 54 decreases.

[0122] The control unit 10 can adjust the pressure regulating slide plate 55 in real time according to the air pressure signal transmitted by the barometer 57 to adjust the air pressure in the air storage chamber 54 .

[0123] In one embodiment, the preset air pressure in the air storage chamber 54 is P0.

[0124] If the current air pressure P1 in the air storage chamber 54 is less than P0, the pressure regulating slide 55 is driven by the slide driving mechanism 56 to move and reduce the volume of the air storage chamber 54 until P1 = P0.

[0125] If the current air pressure P1 in the air storage chamber 54 is greater than P0, the pressure regulating slide 55 is driven by the slide driving mechanism 56 to move and increase the volume of the air storage chamber 54 until P1 is equal to P0.

[0126] In one embodiment, if Figure 8 As shown, the slide plate driving mechanism 56 adopts a motor screw driving mechanism, which is precisely adjusted. The slide plate driving mechanism 56 includes a transmission screw 561 and a driving motor 562 for driving the transmission screw 561 to rotate. The driving motor 562 is fixedly connected to the shell of the steam recovery box 51. The pressure regulating slide plate 55 has an internal threaded hole, and the transmission screw 561 passes through the internal threaded hole. The two are threadedly connected to achieve sliding and thread sealing.

[0127] The driving motor 562 is connected to the control unit 10 by signals. When the driving screw 561 rotates forward, the pressure regulating slide 55 moves toward the first direction. When the driving screw 561 rotates backward, the pressure regulating slide 55 moves toward the second direction.

[0128] In one embodiment, if Figure 3-4 , Figure 6 and Fig. 9 As shown, the desalination device 4 includes a scraper mechanism 8 .

[0129] The scraper mechanism 8 includes a scraper 81 and an electric push rod 82 for driving the scraper 81 to move linearly. The scraper 81 is slidably disposed on the top surface of the electric heating plate 42 .

[0130] A material discharge port 412 is provided on the bottom plate 411 of the processing box, and an electric sliding cover 413 capable of opening and closing automatically is installed in the material discharge port 412 .

[0131] The electric slide cover 413 and the electric push rod 82 are respectively connected to the control unit 10 by signals.

[0132] The electric slide cover 413 and the electric push rod 82 are connected to the municipal circuit 100 and the output circuit 64 respectively.

[0133] In this embodiment, a scraper mechanism 8 is disposed on the electric heating plate 42 to scrape off the salt falling on the electric heating plate 42 .

[0134] The scraper mechanism 8 includes a scraper 81 and an electric push rod 82. The scraper 81 is slidably disposed on the top surface of the electric heating plate 42, and the electric push rod 82 is connected to the shell of the desalination treatment box 41. The output end 821 of the electric push rod 82 is connected to the scraper 81 to drive the scraper 81 to slide back and forth.

[0135] As required, two positioning plates 83 can be arranged in the desalination treatment box 41. The two positioning plates 83 are arranged at opposite ends of the electric heating plate 42, and the positioning plates 83 are connected to the shell of the desalination treatment box 41. A guide rod 84 is connected between the two positioning plates 83, and the scraper 81 is slidably connected to the guide rod 84, which guides the sliding of the scraper 81.

[0136] At least one discharge port 412 is provided on the bottom plate 411 of the processing box. Preferably, two discharge ports 412 are provided on the bottom plate 411 of the processing box. The two discharge ports 412 are located at opposite ends of the electric heating plate 42 and are spaced apart along the extension direction of the guide rod 84 .

[0137] The discharge port 412 is equipped with an electric slide cover 413 which can open and close automatically. The electric slide cover 413 adopts an existing structure, which may include a cover plate and a cover plate driving mechanism. The cover plate driving mechanism may adopt a piston driving mechanism or a motor screw driving mechanism, which is used to drive the cover plate to slide linearly.

[0138] A cavity 414 is provided in the bottom plate 411 of the processing box. When the electric sliding cover 413 is opened, its cover is received in the cavity 414 to open the material discharge port 412. When the electric sliding cover 413 is closed, its cover extends out of the cavity 414 to seal the material discharge port 412.

[0139] The electric slide cover 413 and the electric push rod 82 are respectively connected to the control unit 10 by signals, and the control unit 10 controls the electric slide cover 413 and the electric push rod 82 to open and close automatically.

[0140] The electric slide cover 413 and the electric push rod 82 are connected to the municipal circuit 100 and the output circuit 64 respectively, and can be powered by the municipal circuit 100 and the output circuit 64.

[0141] When it is necessary to scrape salt, the electric slide cover 413 and the electric push rod 82 are opened, and the scraper 81 moves back and forth to scrape the salt on the electric heating plate 42, which is discharged from the discharge port 412 and can be transported to a designated position through the conveying mechanism.

[0142] In one embodiment, if Figure 3 and Figure 6 As shown, a weighing sensor 49 is provided on the bottom plate 411 of the processing box, and the electric heating plate 42 falls on the weighing sensor 49 .

[0143] The weighing sensor 49 is connected to the control unit 10 for signal communication.

[0144] When the weighing sensor 49 detects that the current weight G1 of the electric heating plate 42 is greater than the preset weight threshold G0 of the electric heating plate 42 , the electric push rod 82 and the electric sliding cover 413 are automatically opened.

[0145] In this embodiment, a weighing sensor 49 is disposed below the electric heating plate 42 to automatically control the switch of the electric push rod 82, thereby achieving automatic salt scraping.

[0146] When scraping salt, the supply of mine wastewater to the desalting device 4 can be stopped, and the electric heating plate 42 also stops heating.

[0147] The preset weight threshold G0 can be preset according to the weight of the electric heating plate 42. The weighing sensor 49 is connected to the control unit 10 signal, and the current weight of the electric heating plate 42 can be transmitted to the control unit 10 in real time, and the control unit 10 determines whether to open the electric push rod 82 and the electric slide cover 413.

[0148] If the monitored current weight G1 is greater than the preset weight threshold G0, the control unit 10 controls the electric push rod 82 and the electric slide cover 413 to be opened. If the monitored current weight G1 is approximately equal to the preset weight threshold G0, the control unit 10 controls the electric push rod 82 and the electric slide cover 413 to be closed.

[0149] Preferably, a weighing sensor 49 is respectively disposed at the four corners of the electric heating plate 42 , and the current weight G1 is the average value of the four weighing sensors 49 .

[0150] In one embodiment, if Figure 2-3 As shown, the desalination treatment box 41 is equipped with a detachable and replaceable filter screen 44 , a water collecting funnel 45 located below the filter screen 44 , a guide pipe 46 connected to the water collecting funnel 45 and extending downward, and a multi-way pipe 47 connected to the guide pipe 46 .

[0151] The plurality of nozzles 43 are respectively connected to a multi-way pipe 47 .

[0152] A sealing baffle 48 is also installed in the desalination treatment box 41 . The sealing baffle 48 is located between the multi-way pipe 47 and the water collecting funnel 45 . The flow guide pipe 46 passes through the sealing baffle 48 .

[0153] The exhaust end 521 of the exhaust pipe 52 is located below the sealing partition 48 .

[0154] In this embodiment, after the mine wastewater is treated by the stirring device 2, it enters the desalination treatment box 41, is first filtered by the filter screen 44, then flows to the guide pipe 46 through the water collecting funnel 45, and then is guided to the multiple nozzles 43 through the multi-way pipe 47. The multi-way pipe 47 can be linear, grid-shaped or coil-shaped.

[0155] In order to prevent water vapor from overflowing upward, a sealing partition 48 is provided between the multi-way pipe 47 and the water collecting funnel 45 , and the air extraction end 521 is arranged below the sealing partition 48 .

[0156] In this embodiment, a plug-in port is provided in the desalination treatment box 41 to install the filter screen 44 .

[0157] Preferably, multiple layers of filter screens 44 spaced apart from each other are provided in the desalination treatment box 41. When the filter screens 44 are extracted and replaced, they are extracted and replaced from top to bottom in sequence, with one layer of filter screen 44 being replaced each time, thereby ensuring that when each layer of filter screen 44 is replaced, there are still other filter screens 44 to play a filtering role without stopping the machine.

[0158] In one embodiment, if Figure 1-2 As shown, the filtering device 1 includes a filtering tank 11, the top of which is connected to a water inlet pipe 12, a filtering cotton mesh layer 14, an activated carbon layer 15, a fine sand layer 16 and a coarse sand layer 17 are sequentially arranged in the filtering tank 11 from bottom to top, and the bottom of the filtering tank 11 is connected to a sewer pipe 12.

[0159] A fixing bracket 25 is installed on the top of the stirring device 2 , the filter tank 11 is installed on the fixing bracket 25 , and the downpipe 12 is connected to the stirring device 2 .

[0160] The mine wastewater is led out from the mine into the filter tank 11 through the water inlet pipe 12, and then filtered through the coarse sand layer 17, the fine sand layer 16, the activated carbon layer 15, and the filter cotton mesh layer 14 in sequence, so as to filter and clean the impurities in the wastewater, and then introduced into the mixing box 21 of the mixing device 2 through the down pipe 12.

[0161] A fixing bracket 25 is installed on the top of the stirring device 2 , and the filter tank 11 is installed on the fixing bracket 25 , so as to assemble the filter device 1 and the stirring device 2 together and to facilitate the water in the filter tank 11 to be introduced into the stirring box 21 .

[0162] In one embodiment, if Figure 1-2 As shown, the stirring device 2 includes a stirring box 21 , and a fixing bracket 25 is installed on the stirring box 21 .

[0163] A stirring screw 23 is installed in the stirring box 21 , and a motor 22 for driving the stirring screw 23 to rotate is installed on the outer side of the stirring box 21 . The motor 22 is connected to the control unit 10 by signal.

[0164] The motor 22 is connected to the mains circuit 100 and the output circuit 64 .

[0165] A flocculant adding pipe 24 is installed on the top of the stirring box 21 .

[0166] In this embodiment, when the motor 22 drives the stirring screw 23 to rotate and stir the mine wastewater, flocculant is also added to the stirring box 21 through the flocculant addition pipe 24, mainly to coagulate the impurities remaining in the wastewater so that they can be filtered by the filter screen 44 later.

[0167] Combination Figure 1-11 As shown, an embodiment of the present invention provides a mine wastewater treatment method, which adopts the mine wastewater treatment equipment described in any of the above embodiments.

[0168] The mine wastewater treatment method includes the following steps:

[0169] S01: Introduce wastewater into filtering device 1 for preliminary filtration.

[0170] S02: The wastewater after preliminary filtration is introduced into the stirring device 2 for stirring and sedimentation.

[0171] S03: The wastewater after stirring and settling is introduced into the desalination device 4 through the wastewater conveying mechanism 3 for desalination treatment.

[0172] S04: The water vapor in the desalination treatment box 41 is collected in the steam recovery device 5 .

[0173] S05: The water vapor in the steam recovery device 5 is transported to the steam power generation device 6 to generate electricity.

[0174] When the current I1 of the output circuit 64 meets the rated current I0 of the electric heating plate 42 , the output circuit 64 alone supplies power to the electric heating plate 42 .

[0175] When the current I1 of the output circuit 64 is lower than the rated current I0 of the electric heating plate 42, the utility circuit 100 alone supplies power to the electric heating plate 42, and the current of the output circuit 64 is stored in the storage battery 63. Alternatively, the utility circuit 100 and the output circuit 64 supply power to the electric heating plate 42 together.

[0176] The mine wastewater treatment method provided by the present invention utilizes the waste heat or energy of water vapor to generate electricity, and then can supply power to the electric heating plate 42 through the output circuit 64, thereby making full use of the waste heat of water vapor, saving the mains electricity consumption of electrical appliances such as the electric heating plate 42, and helping to reduce production costs.

[0177] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0178] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of the present invention, which should also be considered as the protection scope of the present invention.

Claims

1. A mine wastewater treatment equipment, characterized in that: It includes a control unit and a filtering device, a stirring device, a wastewater conveying mechanism, a desalination device, a steam recovery device and a steam power generation device connected in sequence; The desalination device comprises a desalination treatment box, the wastewater delivery pipe of the wastewater delivery mechanism is connected to the top of the desalination treatment box, an electric heating plate is installed on the treatment box bottom plate of the desalination treatment box, and a plurality of nozzles connected to the wastewater delivery pipe are arranged above the electric heating plate in the desalination treatment box; The steam recovery device comprises a steam recovery box, an air extraction pipe connected to the steam recovery box, and an air extraction pump connected to the air extraction pipe, wherein the air extraction end of the air extraction pipe is connected to the desalination treatment box; The steam power generation device comprises a steam generator, a transformer, a storage battery and an output circuit, and the steam recovery tank is connected to the steam generator via a steam conveying mechanism; The electric heating plate is connected to the municipal circuit and the output circuit, and the output circuit and the municipal circuit are respectively provided with an electric control switch and an ammeter connected to the control unit signal; When the current I1 of the output circuit meets the rated current I0 of the electric heating plate, the output circuit alone supplies power to the electric heating plate.

2. The mine wastewater treatment equipment according to claim 1, characterized in that: The municipal circuit is provided with a variable resistor capable of automatically adjusting resistance, and the variable resistor is connected to the control unit by signal; When the current I1 of the output circuit is less than the rated current I0 of the electric heating plate, the municipal circuit and the output circuit together supply power to the electric heating plate; The variable resistor adjusts its resistance accordingly, and the municipal circuit supplies a current I2 = I0 - I1 to the electric heating plate.

3. The mine wastewater treatment equipment according to claim 1, characterized in that: A pressure regulating slide plate for regulating air pressure is installed in the steam recovery box, and the pressure regulating slide plate is sealed and slidably connected to the steam recovery box; One side of the pressure regulating slide plate is an air storage cavity, a barometer is installed in the air storage cavity, the air extraction pipe is connected to the air storage cavity, and the steam delivery pipe of the steam delivery mechanism is connected to the top of the air storage cavity; The steam recovery box is provided with a slide driving mechanism for driving the pressure regulating slide to slide and adjust; The slide plate driving mechanism and the barometer are respectively connected to the control unit by signals.

4. The mine wastewater treatment equipment according to claim 3, characterized in that: The preset air pressure in the air storage chamber is P0; If the current air pressure in the air storage chamber is P1<P0, the pressure regulating slide is driven by the slide driving mechanism to move and reduce the volume of the air storage chamber until P1=P0; If the current air pressure in the air storage chamber is P1>P0, the pressure regulating slide plate is driven by the slide plate driving mechanism to move to increase the volume of the air storage chamber until P1=P0.

5. The mine wastewater treatment equipment according to claim 1, characterized in that: The desalination device comprises a scraper mechanism; The scraper mechanism comprises a scraper and an electric push rod for driving the scraper to move linearly, and the scraper is slidably arranged on the top surface of the electric heating plate; A material discharge port is provided on the bottom plate of the processing box, and an electric sliding cover capable of automatically opening and closing is installed in the material discharge port; The electric sliding cover and the electric push rod are respectively connected to the control unit by signal; The electric sliding cover and the electric push rod are connected to the municipal circuit and the output circuit respectively.

6. The mine wastewater treatment equipment according to claim 5, characterized in that: A weighing sensor is provided on the bottom plate of the processing box, and the electric heating plate falls on the weighing sensor; The weighing sensor is connected to the control unit by signal; When the weighing sensor detects that the current weight G1 of the electric heating plate is greater than the preset weight threshold G0 of the electric heating plate, the electric push rod and the electric sliding cover are automatically opened.

7. The mine wastewater treatment equipment according to claim 1, characterized in that: The desalination treatment box is equipped with a detachable and replaceable filter screen, a water collecting funnel located below the filter screen, a guide pipe connected to the water collecting funnel and extending downward, and a multi-way pipe connected to the guide pipe; The plurality of nozzles are respectively connected to the multi-way pipe; A sealing baffle is also installed in the desalination treatment box, the sealing baffle is located between the multi-way pipe and the water collecting funnel, and the guide pipe passes through the sealing baffle; The exhaust end of the exhaust pipe is located below the sealing partition.

8. The mine wastewater treatment equipment according to claim 1, characterized in that: The filtering device comprises a filtering tank, the top of which is connected to a water inlet pipe, a filtering cotton mesh layer, an activated carbon layer, a fine sand layer and a coarse sand layer are sequentially arranged in the filtering tank from bottom to top, and the bottom of the filtering tank is connected to a drain pipe; A fixed bracket is installed on the top of the stirring device, the filter tank is installed on the fixed bracket, and the downpipe is connected to the stirring device.

9. The mine wastewater treatment equipment according to claim 8, characterized in that: The stirring device comprises a stirring box, and the fixed bracket is installed on the stirring box; A stirring screw is installed in the stirring box, and a motor for driving the stirring screw to rotate is installed on the outside of the stirring box, and the motor is connected to the control unit by signal; The motor is connected to the municipal circuit and the output circuit; A flocculant adding pipe is installed on the top of the stirring box.

10. A method for treating mine wastewater, characterized in that: Using the mine wastewater treatment equipment as described in any one of claims 1 to 9; The mine wastewater treatment method comprises the following steps: S01: introducing wastewater into the filtering device for preliminary filtration; S02: introducing the preliminarily filtered wastewater into the stirring device for stirring and sedimentation; S03: introducing the wastewater after stirring and settling into the desalination device through a wastewater conveying mechanism for desalination treatment; S04: collecting the water vapor in the desalination treatment box into the steam recovery device; S05: transporting the water vapor in the steam recovery device to the steam power generation device to generate electricity; When the current I1 of the output circuit meets the rated current I0 of the electric heating plate, the output circuit alone supplies power to the electric heating plate; When the current I1 of the output circuit is lower than the rated current I0 of the electric heating plate, the municipal circuit supplies power to the electric heating plate alone, and the current of the output circuit is stored in the battery; Alternatively, the mains circuit together with the output circuit supplies power to the electric heating plate.

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