Power plant engineering wastewater treatment device and method

Abstract

The invention relates to the technical field of wastewater treatment, and particularly discloses a power plant engineering wastewater treatment device and method.The power plant engineering wastewater treatment device comprises a treatment tank, a discharging mechanism is arranged on the treatment tank, the discharging mechanism is provided with a liquid inlet, a material cavity and a liquid outlet, a first rod, a second rod and a material tank are fixedly arranged on the discharging mechanism, a first sliding disc is arranged on the first rod, and a first plug is fixedly arranged on the first sliding disc; a second sliding disc is arranged on the second rod in a sliding mode, a second plug is fixedly arranged on the second sliding disc, and an ejector rod is arranged on the material tank. According to the power plant engineering wastewater treatment device, the ejector rod can be pushed to move downwards by utilizing the gravity of the floating block, the sliding rod and the pressing plate, so that the liquid inlet is opened, a flocculating agent in the material tank is poured into the material cavity from the liquid inlet, and when wastewater is poured into the treatment tank, the push plate is driven to move upwards by utilizing the buoyancy of the floating block, so that the liquid outlet is opened; the flocculating agent in the material cavity is discharged from the liquid outlet and is combined with wastewater for treatment, and the flocculating agent is put once when one tank of wastewater is treated, so that the amount of the sewage is matched with that of the flocculating agent, and the control is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a device and method for treating wastewater in a power plant project. Background Art

[0002] The coal-containing wastewater in power plants mainly comes from the flushing drainage of coal handling trestles, the flushing drainage of coal yard roads and the flushing drainage of boiler rooms. The coal-containing wastewater contains a large amount of suspended matter, a small amount of organic matter and fungi, among which the main component of suspended matter is coal powder. Since the suspended particles of coal powder in the coal-containing wastewater are small and have a similar specific gravity to water, it is difficult to rely on gravity to naturally settle, which brings certain difficulties to the treatment of coal-containing wastewater. The traditional method for treating coal-containing wastewater in power plants is: coal-containing wastewater → clarification sedimentation tank → raw water tank → high-efficiency purification filter, so as to treat the wastewater and obtain clean water.

[0003] A Chinese patent document with announcement number CN213537553U discloses a coal-containing wastewater treatment device for a power plant, comprising a regulating tank, a flocculation sedimentation tank, a filter tank and a clear water tank which are sequentially connected through pipelines, a plurality of grating plates with gradually decreasing apertures are arranged in the regulating tank along the flow direction of the wastewater, a medicine box is arranged on the top of the flocculation sedimentation tank, the medicine box is connected to the flocculation sedimentation tank through a medicine adding pipe, a stirring device is arranged in the flocculation sedimentation tank, a sludge hopper is arranged at the bottom of the flocculation sedimentation tank, a top cover is opened and closed at the top of the filter tank, a plurality of inclined annular support plates are installed from top to bottom on the inner side wall of the filter tank, a filter plate is detachably connected to the top of the annular support plate, a downwardly concave collecting groove is arranged at the bottom of the filter plate, a collecting pipe is arranged on the side wall of the filter tank near the collecting groove, and a knocking device is arranged on the inner side wall of the filter tank near the filter plate, and the knocking device can knock and vibrate the filter plate , the large volume of impurities in the wastewater can be filtered through the grid plate set in the regulating tank, and the wastewater can be preliminarily precipitated, and then the wastewater enters the flocculation sedimentation tank, and by adding flocculants thereto, the organic impurities and heavy metals in the wastewater form large-particle flocculation precipitation with the flocculants, and settle into the sludge hopper at the bottom of the flocculation sedimentation tank under the action of gravity and centrifugal force, and then the wastewater after flocculation treatment enters the filter tank, and the suspended coal ash in the wastewater is filtered out under the action of the filter plate. Since the coal ash particles are small, they are easy to remain on the filter plate. Under the action of the beating device, the bottom of the filter plate is continuously beaten, and the coal ash filtered out from the filter plate falls into the collection tank at the bottom of the filter plate under the beating vibration, and the coal ash can be recycled, and the collected coal ash can be taken out from the collection pipe regularly. After filtration in the filter tank, the water quality meets the requirements of recycling and enters the clean water tank for recycling.

[0004] However, the above technical solution still has the following defects. In order to ensure the efficiency and quality of sewage treatment, it is necessary to add a roughly proportioned flocculant into the flocculation sedimentation tank according to the amount of sewage. However, it is difficult to grasp the amount of flocculant added in the above technology. Too much flocculant will cause a waste of flocculant, while too little flocculant will affect the treatment effect of the wastewater. Summary of the invention

[0005] The present invention provides a power plant engineering wastewater treatment device and method, aiming to solve the problem in the related art that it is difficult to grasp the amount of flocculant added each time, too much flocculant will cause waste of flocculant, while too little flocculant will affect the treatment effect of wastewater.

[0006] The power plant engineering wastewater treatment device of the present invention comprises a treatment tank, wherein the treatment tank is provided with a discharge mechanism, wherein the discharge mechanism has a liquid inlet, a material cavity and a liquid outlet which are connected in sequence; The discharge mechanism is fixedly provided with a rod 1, a rod 2 and a material tank connected to the liquid inlet, a plug 1 is slidably provided on the rod 1, a bracket is fixedly provided on the plug 1, an elastic member 1 for blocking the liquid outlet is installed on the plug 1, a plug 2 is slidably provided on the rod 2, an elastic member 2 for blocking the liquid inlet is installed on the plug 2, and a top rod located directly above the plug 2 is slidably provided on the material tank; A sliding rod is provided on the treatment tank for sliding movement, and a push plate located directly below the bracket and a pressure plate located directly above the push rod are fixed on the sliding rod, and a floating block is fixed on the push plate. When the floating block drops due to its own weight, the sliding rod pushes the pressure plate and the push rod to make the second plug detach from the liquid inlet, and the flocculant enters the material cavity through the liquid inlet. When the floating block rises due to buoyancy, the push plate rises against the bracket to make the first plug open the liquid outlet, and the flocculant in the material cavity enters the treatment tank through the liquid outlet.

[0007] When in use, add flocculant into the material tank and empty the treatment tank. The floating block, sliding rod and pressing plate push the push rod downward under the action of their own weight, so that the push rod pushes the plug head 2 out of the liquid inlet, and the flocculant in the material tank is poured into the material cavity from the liquid inlet, and then the wastewater is injected into the treatment tank. The floating block floats on the wastewater liquid surface and moves up with the wastewater liquid surface. The upward movement of the floating block can drive the push plate, sliding rod and pressing plate to move up synchronously. The pressing plate first separates from the push rod, and then the elastic force of the elastic member 2 drives the plug head 2 to reset, so that the plug head 2 abuts against the liquid inlet and blocks the liquid inlet, and then the push plate continues to move upward and pushes the bracket upward. The upward movement of the bracket drives the plug head 1 out of the liquid outlet, and the flocculant in the material cavity is discharged from the liquid outlet to the treatment tank. The flocculant combines with the wastewater. , and then stop injecting wastewater, and let it settle quietly, then discharge flocculants and wastewater, the floating block can move down with the wastewater liquid level, and drive the push plate to separate from the bracket, the elastic force of the elastic member 1 drives the plug 1 to reset, so that the plug 1 abuts against the liquid outlet to block the liquid outlet, and returns to the initial state, and repeats the operation to continue to treat the wastewater. In this way, since the capacity of the treatment tank is fixed, the amount of wastewater treated each time is fixed, the capacity of the material chamber is also fixed, the amount of flocculant added each time is also fixed, and each time a tank of wastewater is treated, the flocculant is added once, so that the amount of sewage matches the amount of flocculant, which is easy to control, avoids waste caused by excessive flocculant addition, and avoids affecting the treatment effect of wastewater by too little flocculant addition.

[0008] Preferably, the discharge mechanism includes a box body fixed on the processing tank, the inner wall of the box body is slidably fitted with a slide plate 1 and a slide plate 2, the material chamber is surrounded by the box body, the slide plate 1 and the slide plate 2, the liquid inlet is opened at the top of the box body, the liquid outlet is opened at the bottom of the box body, an adjustment mechanism for driving the movement of the slide plate 1 is installed on the box body, and an elastic member 3 is fixed between the slide plate 2 and the box body.

[0009] Preferably, the adjustment mechanism comprises a screw rod threadedly connected to the box body, one end of the screw rod is fixedly provided with a hand wheel, and the other end of the screw rod is rotatably connected to the slide plate through a bearing.

[0010] Turning the handwheel can drive the screw to rotate, and the rotation of the screw can move the screw through the threaded connection between the screw and the box body. The movement of the screw can drive the movement of slide plate one, thereby adjusting the distance between slide plate one and slide plate two, thereby realizing the function of adjusting the capacity of the material chamber and adjusting the amount of flocculant added.

[0011] Preferably, the top of the treatment tank is open, and the bottom of the treatment tank is provided with a water inlet for introducing wastewater, a water outlet for discharging wastewater, and a sewage outlet for discharging flocculants.

[0012] Preferably, the top of the material tank is provided with a feeding hopper, and the bottom of the material tank is provided with a discharge port connected with a liquid inlet.

[0013] Preferably, it further comprises a liquid dispersion structure, wherein the liquid dispersion structure comprises a main pipeline fixedly mounted on the box body, wherein the top of the main pipeline is connected to the liquid outlet, and at least three branch pipes are fixedly connected to the main pipeline.

[0014] The flocculant discharged from the liquid outlet can be dispersed into the wastewater in the treatment tank through the main pipe and the branch pipe to improve the dispersion effect of the flocculant, thereby improving the combination effect of the flocculant and the wastewater.

[0015] Preferably, it also includes an air pumping mechanism, which includes an air cylinder fixedly mounted on the processing tank, the top of the air cylinder is fixedly connected to an air pipe, the air pipe is connected to the material chamber, the inner wall of the air cylinder is slidably connected to a leather cup, a movable rod is fixed on the leather cup, and the bottom of the movable rod is fixed on the push plate.

[0016] During the process of adding wastewater, the push plate can move upward with the floating block, and the upward movement of the push plate can drive the movable rod to move upward, and the upward movement of the movable rod can drive the leather cup to slide in the gas cylinder, so that the gas in the gas cylinder is poured into the material cavity through the air pipe. The gas filled into the material cavity causes the pressure in the material cavity to increase, and its pressure forces the slide plate two to overcome the elastic force of the elastic member three and move, thereby increasing the space of the material cavity to accommodate the gas. When the liquid outlet is opened, the pressure in the material cavity pushes the coagulant to be discharged quickly.

[0017] Preferably, an aeration device is also included, which includes an air pump and a one-way valve, the air outlet end of the air pump is fixedly connected to the air inlet end of the one-way valve, the air outlet end of the one-way valve is fixedly connected to an air injection channel, the air injection channel is fixedly arranged at the bottom of the treatment tank, one end of the air injection channel is fixedly connected to an air dispersion rack placed in the treatment tank, and air dispersion holes are opened at the bottom of the air dispersion rack.

[0018] Starting the air pump can inject air into the bottom of the treatment tank through the air injection channel and the air diffusion rack, and the air is dispersed and discharged from the air diffusion holes. The air dispersed and discharged from the air diffusion holes can drive the wastewater to tumble, thereby increasing the mixing effect of the flocculant and the wastewater.

[0019] The power plant engineering wastewater treatment method of the present invention is based on the above-mentioned power plant engineering wastewater treatment device and comprises the following steps: Step 1: Add flocculant into the material tank; Step 2: Empty the treatment tank, the floating block, the sliding rod and the pressing plate push the push rod downward under their own weight, so that the push rod pushes the second plug out of the liquid inlet, and the flocculant in the tank is poured into the material cavity from the liquid inlet; Step 3: Pour wastewater into the treatment tank, the floating block floats on the wastewater surface and moves upward, the floating block drives the pressing plate to move upward through the push plate and the slide rod and is separated from the push rod, the elastic member 2 drives the plug 2 to block the liquid inlet, the push plate continues to move upward to push the bracket, the bracket moves upward to drive the plug 1 to separate from the liquid outlet, and the flocculant in the material cavity is discharged from the liquid outlet into the treatment tank and combined with the wastewater; Step 4: discharge the flocculated waste and wastewater, the floating block moves down with the liquid level, and the elastic member drives the plug to block the liquid outlet.

[0020] The flocculant is added into the material tank and the treatment tank is emptied. The floating block, the sliding rod and the pressing plate push the push rod downward under the action of their own weight, so that the push rod pushes the plug head 2 out of the liquid inlet, and the flocculant in the material tank is poured into the material cavity from the liquid inlet, and then the wastewater is injected into the treatment tank. The floating block floats on the wastewater liquid surface and moves up with the wastewater liquid surface. When the floating block moves up, the elastic member 2 drives the plug head 2 to reset, so that the plug head 2 blocks the liquid inlet, and then, the pushing plate continues to move upward to push the support upward. The upward movement of the support drives the plug head 1 out of the liquid outlet, and the flocculant in the material cavity is discharged from the liquid outlet to the treatment tank to combine with the wastewater. When the flocculants and wastewater are discharged, the floating block can move downward with the wastewater liquid surface, and the elastic force of the elastic member 1 drives the plug head to block the liquid outlet and return to the initial state. Each time a tank of wastewater is treated, the flocculant is added once to match the amount of sewage with the amount of flocculant.

[0021] The beneficial effect of the present invention is that when in use, the flocculant is added into the material tank, and the gravity of the floating block, the sliding rod and the pressing plate can be used to push the push rod downward to control the opening of the liquid inlet, so that the flocculant in the material tank can be poured into the material cavity from the liquid inlet, and then the wastewater is injected into the treatment tank, and the buoyancy of the floating block can be used to drive the pushing plate to move up to open the liquid outlet, so that the flocculant in the material cavity is discharged from the liquid outlet to the treatment tank, and combined with the wastewater for treatment. In this way, since the capacity of the treatment tank is fixed, the amount of wastewater treated each time is fixed, the capacity of the material cavity is also fixed, the amount of flocculant added each time is also fixed, and each time a tank of wastewater is treated, the flocculant is added once, so that the amount of sewage matches the amount of flocculant, which is easy to control, avoids waste caused by excessive flocculant addition, and avoids affecting the treatment effect of wastewater by too little flocculant addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0023] Figure 2 It is a schematic structural diagram of a processing tank in a specific embodiment of the present invention.

[0024] Figure 3 It is a structural schematic diagram of a processing tank, a material tank, a material discharge mechanism and a driving mechanism in a specific embodiment of the present invention.

[0025] Figure 4 It is a structural schematic diagram of a material tank, a material discharge mechanism, a control mechanism and a driving mechanism in a specific embodiment of the present invention.

[0026] Figure 5 It is a cross-sectional view of a delivery mechanism according to a specific embodiment of the present invention.

[0027] Figure 6 It is a specific embodiment of the present invention Figure 5 Schematic diagram of the structure enlarged at point A in the middle.

[0028] Figure 7 It is a structural schematic diagram of a material tank, a box body, a driving mechanism, a liquid dispersion structure and an aeration mechanism in a specific embodiment of the present invention.

[0029] Figure 8 It is a cross-sectional view of the pumping mechanism of a specific embodiment of the present invention.

[0030] Fig. 9 It is a schematic diagram of the structure of a treatment tank and an aeration device in a specific embodiment of the present invention.

[0031] Fig.10 It is a structural schematic diagram of the gas injection channel and the gas dispersion frame in a specific embodiment of the present invention.

[0032] Reference numerals: 10. Base; 20. Treatment tank; 21. Water inlet; 22. Water outlet; 23. Drainage outlet; 24. Support frame; 30. Dispensing mechanism; 31. Material tank; 311. Feeding hopper; 312. Discharging port; 32. Discharging mechanism; 321. Box body; 322. Slide plate 1; 323. Slide plate 2; 324. Material chamber; 325. Liquid inlet; 326. Liquid outlet; 327. Adjusting mechanism; 3271. Screw rod; 3272. Hand wheel; 328. Elastic member 3; 329. Guide rod; 33. Control mechanism 1; 331. Rod 1; 332. Slide plate 1; 333. Elastic member 1; 3 34. Plug one; 335. Bracket; 34. Control mechanism two; 341. Rod two; 342. Sliding disk two; 343. Elastic member two; 344. Plug two; 345. Push rod; 3451. Pressure-bearing part; 346. Elastic member four; 35. Driving mechanism; 351. Sliding rod; 352. Push plate; 353. Floating block; 354. Pressing plate; 40. Liquid dispersion structure; 41. Main pipeline; 42. Branch pipe; 50. Inflating mechanism; 51. Air cylinder; 52. Air pipe; 53. Leather cup; 54. Movable rod; 60. Aeration device; 61. Air injection channel; 62. Air dispersion rack; 621. Air dispersion hole. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 10As shown, the power plant engineering wastewater treatment device of the present invention includes: a base 10, a treatment tank 20, a delivery mechanism 30 and an aeration device 60. The treatment tank 20 is fixedly installed on the base 10 for containing wastewater. The delivery mechanism 30 is located at the top of the treatment tank 20 and is used to deliver flocculants into the treatment tank 20. The aeration device 60 is arranged at the bottom of the treatment tank 20.

[0035] refer to Figures 1 to 3 As shown, the top of the treatment tank 20 is open to facilitate observation of the wastewater in the treatment tank 20. A water inlet 21, a water outlet 22 and a sewage outlet 23 are provided at the bottom of the treatment tank 20. Wastewater can be injected into the treatment tank 20 through the water inlet 21, and the treated water can be discharged through the water outlet 22, and the precipitated flocs can be discharged through the sewage outlet 23. Valves are installed on the water inlet 21, the water outlet 22 and the sewage outlet 23, which can respectively control the opening or closing of the water inlet 21, the water outlet 22 and the sewage outlet 23. A support frame 24 is provided on the top of the treatment tank 20, and the support frame 24 is connected to the delivery mechanism 30 for supporting the delivery mechanism 30.

[0036] refer to Figure 1 , Figures 3 to 6 As shown, the delivery mechanism 30 includes a material tank 31, a discharge mechanism 32, a control mechanism 1 33, a control mechanism 2 34 and a driving mechanism 35. The material tank 31 is used to store flocculants. The top of the material tank 31 is provided with a feeding hopper 311, and the bottom of the material tank 31 is provided with a discharge port 312. The flocculant can be added into the material tank 31 through the feeding hopper 311, and the flocculant in the material tank 31 can be discharged from the discharge port 312. The discharge mechanism 32 is installed at the bottom of the material tank 31. The discharge mechanism 32 can quantitatively take out the flocculant in the material tank 31 and release it into the processing tank 20. The driving mechanism 35 is installed on the support frame 24 to control the discharge mechanism 32.

[0037] The discharge mechanism 32 includes a box body 321, a slide plate 1 322, a slide plate 2 323, an adjustment mechanism 327, an elastic member 328 and a guide rod 329. The box body 321 is fixedly connected to the support frame 24. The slide plates 1 322 and the slide plates 2 323 are slidably fitted on the inner wall of the box body 321. It should be noted that the outer surfaces of the slide plates 1 322 and the slide plates 2 323 have a rubber layer. By setting the rubber layer, the rubber layer is abutted against the box body 321, so that the slide plates 1 322 and the box body 321 and the slide plates 2 323 and the box body 321 can be kept sealed. The box body 321, the slide plates 1 322 and the slide plates 2 323 together enclose a material chamber 324. The capacity of the material chamber 324 corresponds to the capacity of the treatment tank 20, so that the amount of flocculation contained in the material chamber 324 is in the same range as the amount of wastewater contained in the treatment tank 20. The correct ratio is set, and a liquid inlet 325 connected to the discharge port 312 is provided on the top of the box body 321, and a liquid outlet 326 located directly above the treatment tank 20 is provided on the bottom of the box body 321, and the liquid outlet 326 and the liquid inlet 325 are both connected to the material cavity 324. The flocculant in the material tank 31 can enter the material cavity 324 through the liquid inlet 325, and then be discharged into the treatment tank 20 through the liquid outlet 326. The adjustment mechanism 327 is used to drive the slide plate 1 322 to move, and the elastic member 328 is connected between the slide plate 2 323 and the box body 321. The slide plate 2 323 is fixedly connected to the guide rod 329. The box body 321 is provided with a hole slidably connected to the guide rod 329. In this embodiment, the elastic member 328 is a spring, the control mechanism 1 33 is used to switch the liquid outlet 326, and the control mechanism 2 34 is used to switch the liquid inlet 325.

[0038] Continue to refer Figure 4 and Figure 5 As shown, the adjustment mechanism 327 includes a screw rod 3271 and a hand wheel 3272. A threaded hole is provided on the box body 321, and the screw rod 3271 is threadedly connected to the threaded hole. One end of the screw rod 3271 is fixedly connected to the hand wheel 3272, and the other end of the screw rod 3271 is rotatably connected to the slide plate 1 322 through a bearing. Rotating the hand wheel 3272 can drive the screw rod 3271 to rotate, and the rotation of the screw rod 3271 through the threaded connection between the screw rod 3271 and the box body 321 can move the screw rod 3271. The movement of the screw rod 3271 can drive the slide plate 1 322 to move, and then the distance between the slide plate 1 322 and the slide plate 2 323 can be adjusted, thereby realizing the function of adjusting the capacity of the material chamber 324, and finally realizing the adjustment of the ratio of the flocculation dosage and the treated wastewater.

[0039] Continue to refer Figure 5 and Figure 6As shown, the control mechanism 33 includes: a rod 331, a sliding plate 332, an elastic member 333, a plug 334 and a bracket 335. The rod 331 is fixedly connected to the box body 321. The sliding plate 332 is slidably connected with a single degree of freedom on the rod 331. The elastic member 333 is fixedly connected between the sliding plate 332 and the box body 321. The sliding plate 332 is fixedly connected to the plug 334. The plug 334 abuts against the liquid outlet 326 so that the plug 334 blocks the liquid outlet 326. In this embodiment, the elastic member 333 is a tension spring, and the plug 334 is made of rubber material. The elastic force of the elastic member 333 can drive the sliding plate 332 to move. , so that the plug 334 on the sliding plate 332 abuts against the liquid outlet 326, thereby blocking the liquid outlet 326, thereby preventing the flocculant in the material chamber 324 from being discharged from the liquid outlet 326. A bracket 335 slidably connected to the box body 321 is fixedly connected to the sliding plate 332. When the flocculant in the material chamber 324 needs to be released, the bracket 335 is moved upward. The upward movement of the bracket 335 can drive the sliding plate 332 to overcome the elastic force of the elastic member 333 and move upward synchronously. The upward movement of the sliding plate 332 can drive the plug 334 to move upward and disengage from the liquid outlet 326, so that the liquid outlet 326 is opened, and the flocculant in the material chamber 324 can be discharged from the liquid outlet 326.

[0040] Continue to refer Figure 5 and Figure 6As shown, the control mechanism 34 includes: a rod 341, a sliding plate 342, an elastic member 343, a plug 344 and a push rod 345; the rod 341 is fixedly connected to the box body 321, the push rod 345 is slidably connected to the material tank 31, the rod 341 is slidably connected to the sliding plate 342 with a single degree of freedom, the elastic member 343 is fixedly connected between the sliding plate 342 and the box body 321, the sliding plate 342 is fixedly connected to the plug 344, and the plug 344 is fixedly connected to the plug 344. The second elastic member 343 is a tension spring, and the second plug head 344 is made of rubber material. The elastic force of the second elastic member 343 can drive the second sliding plate 342 to move, so that the second plug head 344 on the second sliding plate 342 abuts against the liquid inlet 325, thereby blocking the liquid inlet 325 and preventing the flocculant in the material tank 31 from entering the material cavity 324 through the liquid inlet 325. The top rod 345 is located just above the plug head 344, and a hole is provided on the top of the tank 31 to be slidably connected to the top rod 345. The top of the top rod 345 has a pressure-bearing portion 3451, and an elastic member 346 is fixedly connected between the pressure-bearing portion 3451 and the tank 31. In this embodiment, the elastic member 346 is a spring, and the elastic force of the elastic member 346 can drive the pressure-bearing portion 3451 to move upward, so that the top rod 345 on the pressure-bearing portion 3451 is away from the plug head 344. 344. When it is necessary to add flocculant into the material chamber 324, the elastic force of the elastic member 346 is overcome and the pressure-bearing portion 3451 is moved downward. The downward movement of the pressure-bearing portion 3451 can drive the push rod 345 to move downward synchronously. The downward movement of the push rod 345 can push the second plug 344 downward, so that the second plug 344 is separated from the liquid inlet 325, and then the liquid inlet 325 is opened, and the flocculant in the material tank 31 can be poured into the material chamber 324 through the discharge port 312 and the liquid inlet 325.

[0041] Continue to refer Figure 3 and Figure 4 As shown, the driving mechanism 35 includes: a slide bar 351, a push plate 352, a floating block 353 and a pressure plate 354. The slide bar 351 is slidably connected to the support frame 24 with a single degree of freedom. In the present embodiment, the cross-section of the slide bar 351 is square, and a square hole matching the slide bar 351 is provided on the support frame 24, so that the slide bar 351 can slide in the square hole with a single degree of freedom. The bottom of the slide bar 351 is fixedly connected to the push plate 352, and the push plate 352 is located directly below the bracket 335. The upward movement of the push plate 352 can push the bracket 335 to move upward. The bottom of the push plate 352 is fixedly connected to the floating block 353. In the present embodiment, the floating block 353 is made of foam material and can float on the liquid surface of the wastewater. The top of the slide bar 351 is fixedly connected to the pressing plate 354, and the pressing plate 354 is located directly above the pressed portion 3451. The downward movement of the pressing plate 354 can push the pressed portion 3451 to move downward.

[0042] During the process of injecting wastewater into the treatment tank 20, the float 353 can float on the liquid surface of the wastewater. As the liquid surface rises, the float 353 can be driven to move upward, and the upward movement of the float 353 can drive the push plate 352 to move upward. The upward movement of the push plate 352 can push the support 335 upward, so that the control mechanism 33 opens the liquid outlet 326, and then the flocculant is added to the treatment tank 20. During the discharge of the wastewater after flocculation, the float 353 moves downward, and the float 353 moves downward and drives the push plate 352 moves downward to disengage from the bracket 335, so that the control mechanism 1 33 closes the liquid outlet 326. As the wastewater continues to be discharged, the float 353, the slide bar 351 and the pressure plate 354 continue to move downward under their own weight, so that the pressure plate 354 contacts the pressure-bearing part 3451. The gravity of the float 353, the slide bar 351 and the pressure plate 354 presses the pressure-bearing part 3451 downward, so that the control mechanism 2 34 opens the liquid inlet 325, and then the flocculant in the material tank 31 can be poured into the material cavity 324.

[0043] refer to Figure 1 and Figure 7 As shown, it also includes a liquid dispersion structure 40, which includes a main pipe 41 fixedly connected to the box body 321, and the top of the main pipe 41 is connected to the liquid outlet 326. At least three branch pipes 42 are fixedly connected to the main pipe 41. The flocculant discharged from the liquid outlet 326 can be dispersed into the wastewater in the treatment tank 20 through the main pipe 41 and the branch pipes 42 to improve the dispersion effect of the flocculant, thereby improving the combination effect of the flocculant and the wastewater.

[0044] refer to Figure 1 , Figure 7 and Figure 8 As shown, it also includes an air pumping mechanism 50, which includes: an air cylinder 51, an air pipe 52, a leather cup 53 and a movable rod 54. The air cylinder 51 is fixedly connected to the support frame 24, the top of the air cylinder 51 is fixedly connected to the air pipe 52, the air pipe 52 is connected to the material chamber 324, the inner wall of the air cylinder 51 is slidably connected to the leather cup 53, the leather cup 53 is made of rubber material, the leather cup 53 is fixedly connected to the movable rod 54, the bottom of the movable rod 54 is fixedly connected to the push plate 352, the push plate 352 moves up to drive the movable rod 54 to move up, and the movable rod 54 moves up. The upward movement of the movable rod 54 can drive the leather cup 53 to slide in the air cylinder 51, so that the gas in the air cylinder 51 is poured into the material cavity 324 through the air pipe 52. The gas filled into the material cavity 324 causes the pressure in the material cavity 324 to increase, and its pressure forces the slide plate 2 323 to overcome the elastic force of the elastic member 3 328 and move, thereby increasing the space of the material cavity 324 to accommodate the gas. When the liquid outlet 326 is opened, the pressure in the material cavity 324 pushes the coagulant to be discharged quickly. At the same time, the elastic force of the elastic member 328 can push the slide plate 2 323 to reset.

[0045] refer to Figure 1 , Fig. 9 and Fig.10As shown, it also includes an aeration device 60, which includes an air pump and a one-way valve. The air outlet end of the air pump is fixedly connected to the air inlet end of the one-way valve, and the air outlet end of the one-way valve is fixedly connected to an air injection channel 61. The air injection channel 61 is welded to the bottom of the treatment tank 20, and one end of the air injection channel 61 is fixedly connected to a diffuser rack 62. The diffuser rack 62 is placed at the bottom of the treatment tank 20, and diffuser holes 621 are opened at the bottom of the diffuser rack 62. The air pump can inject air into the bottom of the treatment tank 20 through the air injection channel 61 and the diffuser rack 62, and disperse and discharge it from the diffuser holes 621. The air dispersed and discharged from the diffuser holes 621 can drive the wastewater to tumble, thereby increasing the mixing effect of the flocculant and the wastewater.

[0046] When in use, the flocculant is first added into the material tank 31 , and the gravity of the floating block 353 , the sliding rod 351 and the pressing plate 354 can press the pressed portion 3451 downward, so that the control mechanism 2 34 opens the liquid inlet 325 , and then the flocculant in the material tank 31 is poured into the material cavity 324 .

[0047] Open the water inlet 21 and inject wastewater into the treatment tank 20. The wastewater can float the float 353, and as the liquid level rises, the float 353 can be driven to move upward. The upward movement of the float 353 drives the push plate 352 to move upward synchronously. The upward movement of the push plate 352 can drive the movable rod 54 to move upward. The upward movement of the movable rod 54 drives the leather cup 53 to slide in the air cylinder 51, so that the gas in the air cylinder 51 is poured into the material cavity 324 through the air pipe 52, so that the pressure in the material cavity 324 increases, and the pressure forces the slide plate 2 323 to overcome the elastic force of the elastic member 3 328 and move.

[0048] As the push plate 352 moves upward, the push plate 352 pushes the support 335 upward, so that the control mechanism 33 opens the liquid outlet 326. The pressure in the material chamber 324 can push the flocculant to be discharged from the liquid outlet 326. The flocculant discharged from the liquid outlet 326 can be dispersed into the wastewater in the treatment tank 20 through the main pipe 41 and the branch pipe 42. Then the wastewater injection is stopped and the air pump is started. The air pump injects air into the bottom of the treatment tank 20 through the air injection channel 61 and the air dispersion rack 62, and the air is dispersed and discharged from the air dispersion holes 621. The air dispersed and discharged from the air dispersion holes 621 can drive the wastewater to roll, thereby increasing the mixing effect of the flocculant and the wastewater.

[0049] Then, the air pump is turned off, and the wastewater is allowed to settle to separate into layers. After the wastewater is separated into layers, the sewage outlet 23 is opened first to discharge the precipitated flocculants from the sewage outlet 23. After the flocculants are discharged, the sewage outlet 23 is closed. Then, the water outlet 22 is opened to allow the treated water to flow out from the water outlet 22. After the treated water flows out, the water outlet 22 is closed. In the process of the treated water flowing out, the floating block 353 moves down with the liquid level, and the floating block 353 moves down and drives the push plate 352 to move down to separate from the bracket 335, so that the control mechanism 33 closes the liquid outlet 326. As the wastewater continues to be discharged, the floating block 353 and the push plate 352 move downward. The rod 351 and the pressure plate 354 continue to move downward under their own weight, and the pressure plate 354 contacts the pressure-bearing part 3451. The gravity of the floating block 353, the sliding rod 351 and the pressure plate 354 presses the pressure-bearing part 3451 downward, so that the control mechanism 2 34 opens the liquid inlet 325, and then the flocculant in the material tank 31 is poured into the material cavity 324 again. At the same time, the movable rod 54 follows the push plate 352 to move downward, and the push plate 352 moves downward to drive the leather cup 53 to move downward in the air cylinder 51, and the air passes over the leather cup 53 and enters the air cylinder 51. The operation is repeated, and the wastewater is injected to continue the wastewater treatment work of the next tank.

[0050] The power plant engineering wastewater treatment method of the present invention adopts the above-mentioned power plant engineering wastewater treatment device, and its steps are as follows: Step 1: first add the flocculant into the material tank 31; Step 2: empty the treatment tank 20, the gravity of the floating block 353, the sliding rod 351 and the pressing plate 354 can press the pressure-receiving part 3451 to move downward, and the pressure-receiving part 3451 moves downward to drive the entire push rod 345 to move downward, and the push rod 345 moves downward to push the second plug 344 away from the liquid inlet 325, so that the second control mechanism 34 opens the liquid inlet 325, and then the flocculant in the material tank 31 is poured into the material cavity 324; Step 3: Open the water inlet 21 and inject waste water into the treatment tank 20. The waste water can float the floating block 353. As the liquid level rises, the floating block 353 is driven to move upward. The upward movement of the floating block 353 drives the push plate 352 to move upward synchronously. The upward movement of the push plate 352 drives the pressure plate 354 to separate from the push rod 345 through the slide rod 351. The elastic force of the elastic member 4 346 drives the push rod 345 to separate from the plug head 2 344. The elastic force of the elastic member 2 343 drives the plug head 2 344 to contact the liquid inlet 325 through the slide plate 2 342 to block the liquid inlet 325. At the same time, the upward movement of the push plate 352 drives the movable rod 54 to move upward. The upward movement of the movable rod 54 drives the leather cup 53 to slide in the air cylinder 51. The gas in the gas cylinder 51 is poured into the material chamber 324 through the air pipe 52, so that the pressure in the material chamber 324 increases, and the pressure forces the slide plate 2 323 to overcome the elastic force of the elastic member 328 to move. As the push plate 352 continues to move upward, the push plate 352 pushes the bracket 335 upward, and the bracket 335 moves upward by pushing the sliding plate 1 332 to drive the plug 1 334 upward, so that the plug 1 334 moves upward to open the liquid outlet 326, and the flocculant in the material chamber 324 is discharged from the liquid outlet 326. The flocculant discharged from the liquid outlet 326 is dispersed into the wastewater in the treatment tank 20 through the main pipe 41 and the branch pipe 42. In addition, the pressure in the material chamber 324 can accelerate the discharge of the flocculant; Step 4: Stop the wastewater injection and start the air pump. The air pump injects air into the bottom of the treatment tank 20 through the air injection channel 61 and the air diffusion rack 62, and the air is dispersed and discharged from the air diffusion holes 621. The air dispersed and discharged from the air diffusion holes 621 can drive the wastewater to roll, thereby increasing the mixing effect of the flocculant and the wastewater. Step 5: After mixing the flocculant and the wastewater, turn off the air pump and let it settle to separate the wastewater into layers; Step 6: After the wastewater is layered, the sewage outlet 23 is opened first to discharge the precipitated flocculants from the sewage outlet 23. After the flocculants are discharged, the sewage outlet 23 is closed, and then the water outlet 22 is opened to allow the treated water to flow out from the water outlet 22. At the same time, the floating block 353 moves downward with the liquid level, and the downward movement of the floating block 353 can drive the push plate 352 to move downward to separate from the bracket 335. The elastic force of the elastic member 333 drives the plug 334 to abut against the liquid outlet 326 through the sliding plate 332 to block the liquid outlet 326. At the same time, the movable rod 54 moves downward with the push plate 352, and the push plate 352 moves downward to drive the leather cup 53 to move downward in the air cylinder 51, and the air passes over the leather cup 53 and enters the air cylinder 51; Step 7: Repeat steps 2 to 6, and regularly add flocculant to the material tank 31 through the hopper 311 until the wastewater treatment is completed.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A power plant engineering wastewater treatment device, comprising a treatment tank, wherein the treatment tank is provided with a discharge mechanism, characterized in that: The discharge mechanism is provided with a liquid inlet, a material cavity and a liquid outlet which are connected in sequence; The discharge mechanism is fixedly provided with a rod 1, a rod 2 and a material tank connected to the liquid inlet, a plug 1 is slidably provided on the rod 1, a bracket is fixedly provided on the plug 1, an elastic member 1 for blocking the liquid outlet is installed on the plug 1, a plug 2 is slidably provided on the rod 2, an elastic member 2 for blocking the liquid inlet is installed on the plug 2, and a top rod located directly above the plug 2 is slidably provided on the material tank; A sliding rod is provided on the treatment tank for sliding movement, and a push plate located directly below the bracket and a pressure plate located directly above the push rod are fixed on the sliding rod, and a floating block is fixed on the push plate. When the floating block drops due to its own weight, the sliding rod pushes the pressure plate and the push rod to make the second plug detach from the liquid inlet, and the flocculant enters the material cavity through the liquid inlet. When the floating block rises due to buoyancy, the push plate rises against the bracket to make the first plug open the liquid outlet, and the flocculant in the material cavity enters the treatment tank through the liquid outlet.

2. The power plant engineering wastewater treatment device according to claim 1, characterized in that: The material discharge mechanism includes a box body fixedly mounted on the processing tank, the inner wall of the box body is slidably fitted with a slide plate 1 and a slide plate 2, the material cavity is surrounded by the box body, the slide plate 1 and the slide plate 2, the liquid inlet is opened at the top of the box body, the liquid outlet is opened at the bottom of the box body, an adjustment mechanism for driving the movement of the slide plate 1 is installed on the box body, and an elastic member 3 is fixed between the slide plate 2 and the box body.

3. The power plant engineering wastewater treatment device according to claim 2 is characterized in that: The adjusting mechanism comprises a screw rod which is threadedly connected to the box body, one end of the screw rod is fixedly provided with a hand wheel, and the other end of the screw rod is rotatably connected to the slide plate through a bearing.

4. The power plant engineering wastewater treatment device according to claim 1, characterized in that: The top of the treatment tank is open, and the bottom of the treatment tank is provided with a water inlet for introducing wastewater, a water outlet for discharging wastewater, and a sewage outlet for discharging flocculants.

5. The power plant engineering wastewater treatment device according to claim 1, characterized in that: The top of the material tank is provided with a feeding hopper, and the bottom of the material tank is provided with a feeding port communicated with a liquid inlet.

6. The power plant engineering wastewater treatment device according to claim 1, characterized in that: It also includes a liquid dispersion structure, which includes a main pipeline fixed on the box body, and the top of the main pipeline is connected to the liquid outlet. At least three branch pipes are fixedly connected to the main pipeline.

7. The power plant engineering wastewater treatment device according to claim 2 is characterized in that: It also includes an air pumping mechanism, which includes an air cylinder fixedly mounted on the processing tank, the top of the air cylinder is fixedly connected to an air pipe, the air pipe is connected to the material chamber, the inner wall of the air cylinder is slidably connected to a leather cup, a movable rod is fixed on the leather cup, and the bottom of the movable rod is fixed on the push plate.

8. The power plant engineering wastewater treatment device according to claim 1, characterized in that: It also includes an aeration device, which includes an air pump and a one-way valve. The air outlet end of the air pump is fixedly connected to the air inlet end of the one-way valve, and the air outlet end of the one-way valve is fixedly connected to an air injection channel. The air injection channel is fixedly arranged at the bottom of the treatment tank, and one end of the air injection channel is fixedly connected to an air dispersion rack placed in the treatment tank, and air dispersion holes are opened at the bottom of the air dispersion rack.

9. A method for treating power plant engineering wastewater based on the power plant engineering wastewater treatment device according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: Add flocculant into the material tank; Step 2: Empty the treatment tank, the floating block, the sliding rod and the pressing plate push the push rod downward under their own weight, so that the push rod pushes the second plug out of the liquid inlet, and the flocculant in the tank is poured into the material cavity from the liquid inlet; Step 3: Pour wastewater into the treatment tank, the floating block floats on the wastewater surface and moves upward, the floating block drives the pressing plate to move upward through the push plate and the slide rod and is separated from the push rod, the elastic member 2 drives the plug 2 to block the liquid inlet, the push plate continues to move upward to push the bracket, the bracket moves upward to drive the plug 1 to separate from the liquid outlet, and the flocculant in the material cavity is discharged from the liquid outlet into the treatment tank and combined with the wastewater; Step 4: discharge the flocculated waste and wastewater, the floating block moves down with the liquid level, and the elastic member drives the plug to block the liquid outlet.

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