Mine wastewater treatment device and mine wastewater treatment method

Abstract

The application discloses a mine wastewater treatment equipment and a mine wastewater treatment method, which are provided with a steam power generation device, the steam power generation device generates power by using the waste heat or energy of water vapor, and then can supply power to an electric heating plate through an output circuit, the waste heat of the water vapor is fully utilized, the mains electricity of electric appliances such as the electric heating plate is saved, and production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of mine wastewater treatment technology, and in particular to a mine wastewater treatment device and a mine wastewater treatment method. Background Technology

[0002] Wastewater treatment involves using physical, chemical, and biological methods to purify wastewater, reduce pollution, and ultimately achieve wastewater recycling and reuse, thus making full use of water resources.

[0003] During the mining process, a large amount of wastewater is generated. This wastewater contains salt. If the wastewater is directly discharged into the environment after filtration and purification, the nutrients contained in the water will not be treated, resulting in excessive alkalinity of the surrounding soil, causing soil infertility and reducing the effectiveness of wastewater desalination.

[0004] Therefore, desalination is a process performed during wastewater treatment. Desalination typically involves heating the filtered wastewater to produce steam, thus achieving desalination. The amount of steam generated during this heating desalination process is enormous.

[0005] In existing technologies, the generated water vapor is usually condensed into condensate for recycling. This results in the complete waste of heat from the water vapor, failing to fully utilize the waste heat, and the heating plate is continuously powered by mains electricity, leading to high electricity consumption and hindering cost reduction. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a new type of mine wastewater treatment equipment and method. The steam power generation device uses the waste heat or energy of steam to generate electricity, and then supplies power to the electric heating plate through the output circuit. This makes full use of the waste heat of steam, saves the mains electricity consumption of the electric heating plate and other electrical appliances, and helps to reduce production costs.

[0007] The present invention provides a mine wastewater treatment device, including a control unit and a filter device, a stirring device, a wastewater conveying mechanism, a desalination device, a steam recovery device and a steam power generation device connected in sequence.

[0008] The desalination device includes a desalination treatment tank, the wastewater conveying pipe of the wastewater conveying mechanism is connected to the top of the desalination treatment tank, an electric heating plate is installed on the bottom plate of the desalination treatment tank, and multiple nozzles connected to the wastewater conveying pipe are provided inside the desalination treatment tank above the electric heating plate.

[0009] The steam recovery device includes a steam recovery box, an extraction pipe connected to the steam recovery box, and an extraction pump connected to the extraction pipe. The extraction end of the extraction pipe is connected to the desalination treatment box.

[0010] The steam power generation device includes a steam generator, a transformer, a storage battery, and an output circuit. 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. The output circuit and the municipal circuit are respectively equipped with an electric control switch and an ammeter that are connected to the control unit.

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

[0013] In one of the alternative technical solutions, the municipal circuit is equipped with a variable resistor capable of automatically adjusting its resistance value, 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 the electric heating plate with a current I2 = I0 - I1.

[0016] In one of the alternative technical solutions, a pressure regulating slide plate for adjusting gas 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 a gas storage chamber, in which a barometer is installed. The suction pipe is connected to the gas storage chamber, and the steam delivery pipe of the steam delivery mechanism is connected to the top of the gas storage chamber.

[0018] The steam recovery box is equipped with a slide plate drive mechanism for driving the pressure regulating slide plate to slide and adjust.

[0019] The skateboard drive mechanism and the barometer are respectively connected to the control unit via signal.

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

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

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

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

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

[0025] The bottom plate of the processing box is provided with a feeding port, and the feeding port is equipped with an electric sliding cover that can be automatically opened and closed;

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

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

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

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

[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 open automatically.

[0031] In one of the alternative technical solutions, the desalination treatment box is equipped with a removable and replaceable filter screen, a water collection funnel located below the filter screen, a guide pipe connected to the water collection funnel and extending downward, and a multi-port pipe connected to the guide pipe.

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

[0033] The desalination treatment tank is also equipped with a sealing partition, which is located between the multi-port pipe and the water collection funnel, and the guide pipe passes through the sealing partition.

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

[0035] In one of the alternative technical solutions, the filtration device includes a filter tank, the top of which is connected to a water inlet pipe, and the filter tank is provided with a filter cotton mesh layer, an activated carbon layer, a fine sand layer and a coarse sand layer from bottom to top, and the bottom of the filter 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 drain pipe is connected to the stirring device.

[0037] In one of the alternative technical solutions, the stirring device includes a stirring tank, and the fixed bracket is mounted on the stirring tank;

[0038] A stirring screw is installed in the mixing tank, and a motor for driving the stirring screw to rotate is installed on the outside of the mixing tank. The motor is signal-connected to the control unit.

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

[0040] A flocculant addition pipe is installed on the top of the mixing tank.

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

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

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

[0044] S02: The pre-filtered wastewater is introduced into the stirring device for stirring and sedimentation;

[0045] S03: The wastewater after stirring and settling is introduced into the desalination device for desalination treatment via a wastewater conveying mechanism;

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

[0047] S05: The steam in the steam recovery device is transported 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 supplies power to the electric heating plate alone.

[0049] 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; or, the municipal circuit and the output circuit supply power to the electric heating plate together.

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

[0051] The mine wastewater treatment equipment and method provided by this invention are equipped with a steam power generation device. The steam power generation device generates electricity using the waste heat or energy of steam, and then supplies power to the electric heating plate through the output circuit. This makes full use of the waste heat of steam, saves the mains electricity consumption of the electric heating plate and other electrical appliances, and helps to reduce production costs. Attached Figure Description

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

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

[0054] Figure 2 for Figure 1 The diagram shows the internal structure of a mine wastewater treatment equipment.

[0055] Figure 3 This is a schematic diagram of the desalination unit;

[0056] Figure 4 A schematic diagram showing a material outlet on the bottom plate of the container;

[0057] Figure 5 This is a schematic diagram showing the connection between the extraction pipe and the extraction pump.

[0058] Figure 6 A schematic diagram showing the signal connections between various electrical components and the control unit;

[0059] Figure 7 This is a schematic diagram of a variable resistor with one structure.

[0060] Figure 8 A schematic diagram showing a pressure regulating slide and a slide drive mechanism in a steam recovery box;

[0061] Figure 9 A schematic diagram showing an electric sliding cover installed in the feed inlet;

[0062] Figure 10 This is a schematic diagram of a steam power generation device;

[0063] Figure 11 This is a schematic diagram showing the connection between the electric heating plate and the municipal circuit and output circuit. Detailed Implementation

[0064] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "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, an embodiment of the present invention provides a mine wastewater treatment device, including a control unit 10 and a filter 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 tank 41. The wastewater conveying pipe 32 of the wastewater conveying mechanism 3 is connected to the top of the desalination treatment tank 41. An electric heating plate 42 is installed on the bottom plate 411 of the desalination treatment tank 41. Multiple nozzles 43 connected to the wastewater conveying pipe 32 are provided inside the desalination treatment tank 41 above the electric heating plate 42.

[0067] The steam recovery device 5 includes a steam recovery box 51, an extraction pipe 52 connected to the steam recovery box 51, and an extraction pump 53 connected to the extraction pipe 52. The extraction end 521 of the 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 storage battery 63, and an output circuit 64. The steam recovery box 51 is connected to the steam generator 61 through a steam conveying 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 equipped with an electric control switch 200 and an ammeter 300 that are connected to the control unit 10.

[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 supplies power to the electric heating plate 42 alone.

[0071] The mine wastewater treatment equipment provided by this invention is used for purifying and desalinating mine wastewater. It can also use the steam generated during desalination to generate electricity and then power electrical devices. While utilizing waste heat, it also saves electricity and helps reduce production costs.

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

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

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

[0075] Preferably, the filtration 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 filtration of the incoming mine wastewater. The outlet end of the filter device 1 is connected to the inlet end of the stirring device 2, and the mine wastewater after preliminary filtration by the filter device 1 enters the stirring device 2.

[0077] The stirring device 2 is used to stir the mine wastewater and add flocculant to coagulate the residual impurities in the wastewater, making it easier to filter it again.

[0078] The wastewater conveying mechanism 3 is used to convey the mine wastewater treated by the mixing device 2 to the desalination device 4. The wastewater conveying mechanism 3 includes a water pump 31 and a wastewater conveying pipe 32. The inlet end of the wastewater conveying pipe 32 is connected to the outlet end of the mixing device 2, and the outlet end of the wastewater conveying pipe 32 is connected to the desalination device 4. A bracket can be installed on the housing of the mixing device 2 or the desalination device 4 to mount the water pump 31. The water pump 31 is connected to the control unit 10 via a wire for signal transmission. The control unit 10 controls the automatic switching of the water pump 31.

[0079] The desalination device 4 is used to desalinate incoming mine wastewater. The desalination device 4 includes a desalination treatment tank 41. An opening is provided on the top plate of the desalination treatment tank 41, and the outlet end of the wastewater conveying pipe 32 is inserted into the desalination treatment tank 41 through the opening in the top plate. An electric heating plate 42 is installed on the bottom plate 411 of the treatment tank to heat the mine wastewater, turning it into steam. Salt in the mine wastewater detaches and falls onto the electric heating plate 42, thus achieving desalination of the mine wastewater. Multiple nozzles 43 are installed inside the desalination treatment tank 41, which are connected to the wastewater conveying pipe 32 and positioned above the electric heating plate 42. The multiple nozzles 43 are used to spray a mist of mine wastewater onto the electric heating plate 42, so that the electric heating plate 42 heats the water mist into steam. The temperature of the steam is higher than 120°C, sufficient for a miniature steam generator to produce electricity.

[0080] The steam recovery device 5 is used to collect water vapor from the desalination treatment tank 41. The steam recovery device 5 includes a steam recovery tank 51, an extraction pipe 52, and an extraction pump 53. The extraction end 521 of the extraction pipe 52 is connected to the desalination treatment tank 41, and the exhaust end of the extraction pipe 52 is connected to the steam recovery tank 51. The extraction pump 53 is connected to the control unit 10 via a wire for signal transmission. The control unit 10 controls the automatic switching of the extraction pump 53. Under the suction of the extraction pump 53, water vapor in the desalination treatment tank 41 enters the extraction pipe 52 through the extraction end 521, and then enters the steam recovery tank 51 through the exhaust end.

[0081] Preferably, the extraction end 521 is located above the nozzle 43, extracting water vapor above the nozzle 43 without extracting water mist sprayed from the nozzle 43.

[0082] Preferably, such as Figure 3 and Figure 5 As shown, the extraction end 521 is provided with multiple extraction hoods 522, which have several micro-holes to filter and block particulate impurities from entering.

[0083] The steam power generation device 6 utilizes steam to generate electricity and includes a steam generator 61, a transformer 62, a storage battery 63, and an output circuit 64. The power and other parameters of the steam generator 61 can be selected according to specific operating conditions. The steam generator 61 can be arranged separately from the steam recovery device 5 or integrated into the steam recovery box 51. The steam generator 61 and the transformer 62 are connected by a circuit, and the current generated by the steam generator 61 is transformed to 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 storage battery 63 by a circuit, which can be used to store excess current for later use. The storage battery 63 is connected to the output circuit 64, which can be used to power electrical devices. For circuit design details, please refer to existing technologies; further details are omitted here.

[0084] The steam generator 61 is connected to the control unit 10 via wires to transmit signals. The control unit 10 controls the automatic switching of the steam generator 61.

[0085] The steam delivery mechanism 7 is used to deliver steam from the steam recovery tank 51 to the steam generator 61. The steam delivery mechanism 7 includes an air intake pump and a steam delivery pipe 71, which connects the steam recovery tank 51 and the steam generator 61. A bracket can be provided on the steam recovery tank 51 to mount the air intake pump.

[0086] The electric heating plate 42 is connected to the municipal circuit 100, and during the initial heating phase, it is primarily powered by the municipal circuit 100. The municipal circuit 100 is equipped with an electric control switch 200 and an ammeter 300, which are connected to the control unit 10 via wires. The ammeter 300 transmits the current signal from the municipal circuit 100 to the control unit 10 for judgment. The control unit 10 can selectively open or close the electric control switch 200 on the municipal circuit 100 as needed. When the electric control switch 200 is open, the municipal circuit 100 is disconnected from the electric heating plate 42 and receives no power; when the electric control switch 200 is closed, the municipal circuit 100 is connected to the electric heating plate 42 and receives power.

[0087] On the other hand, the electric heating plate 42 is connected to the output circuit 64. After the electric heating plate 42 has been heating for a period of time, the generated steam is sufficient to generate electricity for the steam generator 61, and the output circuit 64 can then supply power to the electric heating plate 42. The output circuit 64 is also equipped 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 select to open or close the electric control switch 200 on the output circuit 64 according to specific circumstances. When the electric control switch 200 on the output circuit 64 is open, the output circuit 64 is disconnected from the electric heating plate 42 and does not supply power. 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 and supplies power.

[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 supplies power to the electric heating plate 42 separately, saving mains 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 current is stored to meet 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 supply power to the electric heating plate 42 together. The current supplied to the electric heating plate 42 exceeds the rated current I0, but within a safe range, thus increasing the temperature of the steam to facilitate the steam generator 61 to generate electricity.

[0091] Of course, the power mechanism, water pump, air pump, etc. in the above-mentioned stirring device 2 can be connected to the municipal circuit 100 and the output circuit 64 respectively. When the current provided by the output circuit 64 is sufficient, it can supply power to each electrical component, saving the mains power consumption. Since the electric heating plate 42 consumes the most power, it has the highest priority in using the current from the output circuit 64. That is, the current from 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℃, and the temperature of water vapor is between 160-220℃.

[0093] A configurable control panel is available for user operation. The water produced by the steam generator 61 after generating electricity from steam can be transported to a designated location via pipelines.

[0094] The steam recovery tank 51 has an observation window on its front side, with a water level gauge 54. A drain pipe 55 is located at the bottom of the steam recovery tank 51. When the water level in the steam recovery tank 51 exceeds a certain threshold, the valve on the drain pipe 55 is opened to drain the water. Generally, if the water level in the steam recovery tank 51 exceeds 10 cm, it needs to be drained to avoid affecting the humidity and pressure of the water vapor in the steam recovery tank 51.

[0095] In one embodiment, such as Figure 6-7 and Figure 11 As shown, the municipal circuit 100 is equipped with a variable resistor 400 that can automatically adjust its resistance value, and the variable resistor 400 is connected to the control unit 10 via signal.

[0096] 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.

[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 via a wire. The control unit 10 can control the variable resistor 400 to automatically adjust its 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 by the variable resistor 400 and 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 current I2 supplied by the municipal circuit 100 to the electric heating plate 42 is I0-I1.

[0100] In one embodiment, such as Figure 7 As shown, the variable resistor 400 includes an insulating housing 401, an insulating base 402 mounted in the insulating housing 401, a resistor 403 mounted on the insulating base 402, a conductive rod 404 mounted on the insulating base 402 and spaced apart from the resistor 403, a conductive lever 405 slidably connected to the resistor 403 and the conductive rod 404, and a lever driving mechanism 408 for driving the conductive lever 405 to slide. The lever driving mechanism 408 is signal-connected to the control unit 10.

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

[0102] The portion of resistor 403 located between the output terminal 407 and the conductive lever 405 is the functional part of resistor 403. Therefore, by simply controlling the sliding of the conductive lever 405 to adjust its distance from the output terminal 407, the resistance value of resistor 403 can be adjusted, thereby regulating the current supplied to the electric heating plate 42 by the municipal circuit 100. The control unit 10 can calculate the distance between the conductive lever 405 and the output terminal 407 based on the current I2.

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

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

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

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

[0107] When the drive motor 4082 drives the insulating screw 4081 to rotate, the insulating screw 4081 will cause the conductive tab 405 to move along the axial direction of the insulating screw 4081.

[0108] When the insulating screw 4081 rotates in the forward direction, the conductive tab 405 slides toward the terminal 406. When the insulating screw 4081 rotates in the reverse direction, the conductive tab 405 slides toward the output terminal 407.

[0109] The drive motor 4082 is either a servo motor or a stepper motor, and it is connected to the control unit 10 via a signal. The control unit 10 controls the rotation of the drive motor 4082. The sliding distance of the conductive lever 405 can be calculated based on the number of rotations of the insulating screw 4081 and the thread pitch, so as to precisely control the sliding distance of the conductive lever 405.

[0110] In one embodiment, such as Figure 6 and Figure 8As shown, a pressure regulating slide plate 55 for regulating gas pressure is installed in the steam recovery box 51. 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 a gas storage chamber 54, in which a pressure gauge 57 is installed. The suction pipe 52 is connected to the gas storage chamber 54, and the steam delivery pipe 71 of the steam delivery mechanism 7 is connected to the top of the gas storage chamber 54.

[0112] The steam recovery box 51 is equipped with a slide drive mechanism 56 for driving the pressure regulating slide 55 to slide and adjust.

[0113] The skateboard drive mechanism 56 and the barometer 57 are respectively connected to the control unit 10 via signals.

[0114] Generally, the steam generator 61 requires a pressure of 1.6 MPa or higher to generate electricity. Therefore, it is necessary to ensure the pressure of the steam supplied to the steam generator 61, and preferably to ensure that the pressure is stable, so as to facilitate stable power generation by the steam generator 61.

[0115] In this embodiment, a pressure regulating slide plate 55 is installed in the steam recovery tank 51. A sealing ring is provided between the pressure regulating slide plate 55 and the shell of the steam recovery tank 51, and the slide plate 55 is slidable. If necessary, a linear guide rail can be provided between the shell of the steam recovery tank 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 a gas storage chamber 54. By adjusting the position of the pressure regulating slide plate 55, the gas pressure in the gas storage chamber 54 can be adjusted.

[0116] The bottom of the gas storage chamber 54 has an air inlet 511 and the top has an air outlet 512. One-way valves 513 are installed at the air inlet 511 and the air outlet 512 respectively. The exhaust end of the suction 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 gas storage chamber 54 to monitor the gas pressure in the gas storage chamber 54 in real time. The barometer 57 is connected to the control unit 10 and transmits the gas pressure signal to the control unit 10 in real time.

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

[0119] The skateboard drive mechanism 56 can be a piston drive mechanism, a motor screw drive mechanism, etc.

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

[0121] When the skateboard drive mechanism 56 drives the pressure regulating skateboard 55 to move in the 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 pressure signal transmitted from the barometer 57 to regulate the 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 < P0 in the air storage chamber 54, the pressure regulating slide 55 is moved by the slide drive mechanism 56 to 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 moved by the slide drive mechanism 56 to increase the volume of the air storage chamber 54 until P1 = P0.

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

[0127] The drive motor 562 is connected to the control unit 10 via a signal. When the drive screw 561 rotates in the forward direction, the pressure regulating slide plate 55 moves in the first direction. When the drive screw 561 rotates in the reverse direction, the pressure regulating slide plate 55 moves in the second direction.

[0128] In one embodiment, such as Figure 3-4 , Figure 6 and Figure 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] The bottom plate 411 of the processing box is provided with a discharge port 412, and an electric sliding cover 413 that can be automatically opened and closed is installed in the discharge port 412.

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

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

[0133] In this embodiment, a scraper mechanism 8 is provided on the electric heating plate 42 to scrape the salt that falls 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 disposed on the top surface of the electric heating plate 42 and is slidable. The electric push rod 82 is connected to the housing of the desalination treatment tank 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 needed, two positioning plates 83 can be configured in the desalination treatment box 41. The two positioning plates 83 are located at opposite ends of the electric heating plate 42 and 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 arranged at intervals along the extension direction of the guide rod 84.

[0137] The discharge port 412 is equipped with an electric sliding cover 413 that can open and close automatically. The electric sliding cover 413 adopts an existing structure and may include a cover plate and a cover plate drive mechanism. The cover plate drive mechanism may be a piston drive mechanism or a motor screw drive 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 plate is housed in the cavity 414 to open the discharge port 412. When the electric sliding cover 413 is closed, its cover plate extends out of the cavity 414 to seal the discharge port 412.

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

[0140] The electric sliding 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 salt needs to be scraped, the electric sliding cover 413 and the electric push rod 82 are opened, and the scraper 81 moves back and forth to scrape the salt off the electric heating plate 42 and discharge it from the discharge port 412. It can be transported to the designated position through the conveying mechanism.

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

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

[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 automatically open.

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

[0146] During the salt scraping process, the supply of mine wastewater to the desalination device 4 can be suspended, and the electric heating plate 42 will also stop 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 and can transmit the current weight of the electric heating plate 42 to the control unit 10 in real time. The control unit 10 then determines whether to open the electric push rod 82 and the electric sliding cover 413.

[0148] If the detected current weight G1 is greater than the preset weight threshold G0, the control unit 10 controls the opening of the electric push rod 82 and the electric sliding cover 413. If the detected current weight G1 is approximately equal to the preset weight threshold G0, the control unit 10 controls the closing of the electric push rod 82 and the electric sliding cover 413.

[0149] Preferably, a weighing sensor 49 is set at each of 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, such as Figure 2-3 As shown, the desalination treatment tank 41 is equipped with a removable and replaceable filter screen 44, a water collection funnel 45 located below the filter screen 44, a guide pipe 46 connected to the water collection funnel 45 and extending downward, and a multi-port pipe 47 connected to the guide pipe 46.

[0151] Multiple nozzles 43 are connected to a multi-port pipe 47 respectively.

[0152] The desalination treatment tank 41 is also equipped with a sealing partition 48, which is located between the multi-port pipe 47 and the water collection funnel 45, and the guide pipe 46 passes through the sealing partition 48.

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

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

[0155] To prevent water vapor from overflowing upwards, a sealing partition 48 is provided between the multi-port pipe 47 and the water collection funnel 45, and the air extraction end 521 is arranged below the sealing partition 48.

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

[0157] Preferably, multiple layers of filter screens 44 are arranged at intervals in the desalination treatment box 41. When removing and replacing the filter screens 44, they are removed and replaced sequentially from top to bottom, replacing one layer of filter screens 44 at a time. This ensures that when each layer of filter screens 44 is replaced, other filter screens 44 are still in use to perform the filtering function, without the need to stop the machine.

[0158] In one embodiment, such as Figure 1-2 As shown, the filtration device 1 includes a filter tank 11, with an inlet pipe 12 connected to the top of the filter tank 11. The filter tank 11 is provided with a filter cotton mesh layer 14, an activated carbon layer 15, a fine sand layer 16, and a coarse sand layer 17 arranged sequentially from bottom to top. The bottom of the filter tank 11 is connected to a drain pipe 12.

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

[0160] The mine wastewater is drawn from the mine and enters the filter tank 11 through the inlet pipe 12. Then it is 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 to remove impurities from the wastewater. Finally, it is introduced into the mixing box 21 of the mixing device 2 through the drain pipe 12.

[0161] A fixed bracket 25 is installed on the top of the stirring device 2, and the filter tank 11 is installed on the fixed bracket 25 so that the filter device 1 and the stirring device 2 can be assembled together, and it is also convenient to introduce the water of the filter tank 11 into the stirring box 21.

[0162] In one embodiment, such as Figure 1-2 As shown, the stirring device 2 includes a stirring tank 21, and a fixed bracket 25 is installed on the stirring tank 21.

[0163] A stirring screw 23 is installed in the mixing tank 21, and a motor 22 for driving the stirring screw 23 to rotate is installed on the outside of the mixing tank 21. The motor 22 is connected to the control unit 10 via signal.

[0164] Motor 22 is connected to municipal circuit 100 and output circuit 64.

[0165] A flocculant addition pipe 24 is installed on the top of the mixing tank 21.

[0166] In this embodiment, while the stirring screw 23 is driven by the motor 22 to rotate and stir the mine wastewater, flocculant is also added to the mixing tank 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 in the subsequent process.

[0167] Combination Figure 1-11 As shown, one embodiment of the present invention provides a method for treating mine wastewater, which uses the mine wastewater treatment equipment described in any of the foregoing embodiments.

[0168] The methods for treating mine wastewater include the following steps:

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

[0170] S02: Introduce the pre-filtered wastewater into the stirring device 2 for stirring and sedimentation.

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

[0172] S04: Collect the water vapor in the desalination treatment box 41 into the steam recovery device 5.

[0173] S05: The steam 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 supplies power to the electric heating plate 42 alone.

[0175] 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. Alternatively, the municipal 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, which can then be supplied to the electric heating plate 42 through the output circuit 64. This fully utilizes the waste heat of water vapor, saves the mains power consumption of electrical appliances such as the electric heating plate 42, and helps to reduce production costs.

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

[0178] The above are merely 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, and these modifications should also be considered within the scope of protection of the present invention.

Claims

1. A mine wastewater treatment device, characterized in that, It includes a control unit and a filter 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 includes a desalination treatment tank, the wastewater conveying pipe of the wastewater conveying mechanism is connected to the top of the desalination treatment tank, an electric heating plate is installed on the bottom plate of the desalination treatment tank, and multiple nozzles connected to the wastewater conveying pipe are provided inside the desalination treatment tank above the electric heating plate. The steam recovery device includes a steam recovery box, an extraction pipe connected to the steam recovery box, and an extraction pump connected to the extraction pipe. The extraction end of the extraction pipe is connected to the desalination treatment box. The steam power generation device includes a steam generator, a transformer, a storage battery, and an output circuit. 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. The output circuit and the municipal circuit are respectively equipped with an electric control switch and an ammeter that are connected to the control unit. When the current I1 of the output circuit meets the rated current I0 of the electric heating plate, the output circuit supplies power to the electric heating plate alone. The municipal circuit is equipped with a variable resistor that can automatically adjust its resistance value. The variable resistor is signal-connected to the control unit. 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 value accordingly, and the current I2 supplied by the municipal circuit to the electric heating plate is I2 = I0 - I1. The steam recovery box is equipped with a pressure regulating slide plate for adjusting air pressure. The pressure regulating slide plate is sealed and slidably connected to the steam recovery box. One side of the pressure regulating slide plate is a gas storage chamber, in which a barometer is installed. The suction pipe is connected to the gas storage chamber, and the steam delivery pipe of the steam delivery mechanism is connected to the top of the gas storage chamber. The steam recovery box is equipped with a slide plate drive mechanism for driving the pressure regulating slide plate to slide and adjust. The slide plate drive mechanism and the barometer are respectively signal-connected to the control unit. The desalination device includes a scraper mechanism; the scraper mechanism includes a scraper and an electric push rod for driving the scraper to move linearly, the scraper being slidably disposed on the top surface of the electric heating plate; the bottom plate of the processing tank is provided with a discharge port, the discharge port being equipped with an automatically opening and closing electric sliding cover; the electric sliding cover and the electric push rod are respectively signal-connected to the control unit; the electric sliding cover and the electric push rod are respectively connected to the municipal circuit and the output circuit; The desalination treatment box is equipped with a removable and replaceable filter screen, a water collection funnel located below the filter screen, a guide pipe connected to the water collection funnel and extending downward, and a multi-port pipe connected to the guide pipe; multiple nozzles are respectively connected to the multi-port pipe; the desalination treatment box is also equipped with a sealing partition, which is located between the multi-port pipe and the water collection funnel, and the guide pipe passes through the sealing partition; The suction end of the suction pipe is located below the sealing partition.

2. The mine wastewater treatment equipment according to claim 1, characterized in that, The preset air pressure in the gas storage chamber is P0; If the current air pressure P1 < P0 in the air storage chamber, the pressure regulating slide is driven by the slide drive mechanism to move and reduce the volume of the air storage chamber until P1 = P0. If the current air pressure P1 > P0 in the air storage chamber, the pressure regulating slide is driven by the slide drive mechanism to move and increase the volume of the air storage chamber until P1 = P0.

3. The mine wastewater treatment equipment according to claim 1, characterized in that, A weighing sensor is provided on the bottom plate of the processing box, and the electric heating plate rests on the weighing sensor. The weighing sensor is signal-connected to the control unit; 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 open automatically.

4. The mine wastewater treatment equipment according to claim 1, characterized in that, The filtration device includes a filter tank, the top of which is connected to a water inlet pipe. The filter tank contains, from bottom to top, a filter cotton mesh layer, an activated carbon layer, a fine sand layer, and a coarse sand layer. The bottom of the filter 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 drain pipe is connected to the stirring device.

5. The mine wastewater treatment equipment according to claim 4, characterized in that, The stirring device includes a stirring tank, and the fixed bracket is installed on the stirring tank; A stirring screw is installed in the mixing tank, and a motor for driving the stirring screw to rotate is installed on the outside of the mixing tank. The motor is signal-connected to the control unit. The motor is connected to the municipal circuit and the output circuit; A flocculant addition pipe is installed on the top of the mixing tank.

6. A method for treating mine wastewater, characterized in that, The mine wastewater treatment equipment as described in any one of claims 1-5 is adopted; The mine wastewater treatment method includes the following steps: S01: Introduce the wastewater into the filtration device for preliminary filtration; S02: The pre-filtered wastewater is introduced into the stirring device for stirring and sedimentation; S03: The wastewater after stirring and settling is introduced into the desalination device for desalination treatment via a wastewater conveying mechanism; S04: Collect the water vapor in the desalination treatment box into the steam recovery device; S05: The steam in the steam recovery device is transported 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 supplies power to the electric heating plate alone. 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 municipal circuit, together with the output circuit, supplies power to the electric heating plate.

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