Multi-stage treatment device for industrial wastewater

Abstract

The invention belongs to wastewater treatment equipment, and particularly relates to a multi-stage treatment device for industrial wastewater, which comprises a treatment pond, a rotating motor connected to a bracket at the upper end of the treatment pond, a rotating shaft at the lower end of the rotating motor extending to the lower end of the treatment pond, stirring blades arranged on the rotating shaft, a drain pipe arranged on one side of the treatment pond, and a vertical pipe arranged at the lower end of the treatment pond, a switch valve is arranged on the vertical pipe, a straight ladder is arranged on one side of the treatment tank, and the rotating shaft is sequentially provided with a stirring blade, a bubble type aerating assembly, a rotating blade assembly, a feeding mechanism, a drawing type aerating mechanism and a foam scraping assembly from bottom to top; according to the device, the stirring effect is improved, activated sludge is added through the feeding mechanism to be better combined with internal wastewater for reaction, the arranged bubble type air-entrapping assembly, a drawing type aeration mechanism and stirring blades are matched with an external air pump for aeration treatment, and a plurality of oxygen-entrapping devices are arranged, so that the wastewater is better contacted with oxygen, the wastewater treatment effect is improved, and the reaction time is shortened.

Description

Technical Field

[0001] The invention belongs to wastewater treatment equipment, and in particular relates to a multi-stage treatment device for industrial wastewater. Background Art

[0002] In order to achieve environmental protection and reduce the discharge of pollution sources, industrial wastewater needs to be treated at multiple levels to achieve secondary utilization. At present, in the treatment of large amounts of organic wastewater, the activated sludge method is often used in combination with aeration treatment to achieve wastewater degradation. The activated sludge in the prior art is mostly poured or spread through the upper end of the device, which is easy to agglomerate, decomposes slowly, and spreads unevenly. The microorganisms in the activated sludge react slowly with impurities in the wastewater and have poor activity, so it is necessary to continuously spread the proportions, and the amount of sludge treatment in the later stage is large, and it is necessary to add reagents multiple times to purify the water source later.

[0003] After searching, the prior art authorization announcement number CN117509895A is a multi-stage treatment device for industrial wastewater. After the sludge is sprayed out of the first filter plate through the second gas outlet shell, the bubbles discharged from the first gas outlet shell immediately drive the sludge upward, so that the sludge is evenly dispersed in the treatment tank. In this way, the sludge is evenly spread through the bubbles, and the bubbles drive the sludge upward. The bubbles in the sewage pass through impurities and rise slowly, and then drive the activated sludge to rise, so that the effect of evenly spreading the activated sludge in the tank is not good;

[0004] After searching, the prior art authorization announcement number CN216998068U is a wastewater treatment pool that is easy to clean. The aeration fan is used to transport oxygen into the aeration pipe. The oxygen can enhance the activity of the biological filter layer so that the biological filter layer can degrade specific organic matter in the wastewater. The aeration is carried out in the equipment through a single aeration pipe at the bottom. The bubbles generated by aeration rise slowly, so that the wastewater at the upper end combines slowly with the oxygen in the air.

[0005] Therefore, in the existing activated sludge method, an auxiliary device is required to evenly spread the activated sludge into the treatment tank for contact between microorganisms and impurities. However, the activated sludge falls into the water and disperses slowly, which affects the work efficiency. Therefore, a device that can evenly add activated sludge is needed. At the same time, the existing aeration treatment is to perform peroxygen treatment in the treatment tank through an aeration pipe. The aeration pipe can only disperse the nearby sludge to the surroundings, and cannot respectively introduce oxygen according to different positions of the treatment tank to achieve aeration treatment at different heights. At the same time, the aeration pipe can only diffuse water into the water through the aeration head to form bubbles. However, this is placed in a deeper treatment tank, and the rising speed in the sewage is slow, and it cannot quickly contact with oxygen. Therefore, a multi-stage treatment device is needed to perform aeration treatment at different heights, increase the contact speed with oxygen, and improve the current situation of low efficiency of wastewater and oxygen combination. Summary of the invention

[0006] The purpose of the present invention is to provide a multi-stage treatment device for industrial wastewater, which has the purpose of effectively accelerating the combination of wastewater and oxygen in the air and spreading the activated sludge evenly. By providing a feeding mechanism, even spreading of the material in the wastewater is achieved. By setting a multi-stage stirring and multi-stage air intake assembly, aeration at different positions and angles is achieved, so that oxygen in the air is passed into the water, and the liquid is stirred at the same time, so as to accelerate the transfer of oxygen in the air to the liquid, and prevent the pool from The body sinks, strengthening the contact between the organic matter in the pool and the microorganisms and dissolved oxygen, and oxidizing and decomposing the organic matter in the sewage.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A multi-stage treatment device for industrial wastewater, comprising a treatment tank, wherein a rotating motor is connected to an upper bracket of the treatment tank, a rotating shaft at the lower end of the rotating motor extends to the lower end of the treatment tank, a stirring blade is arranged on the rotating shaft, a drainage pipe is arranged on one side of the treatment tank, a vertical pipe is arranged at the lower end of the treatment tank, a switch valve is arranged on the vertical pipe, a vertical ladder is arranged on one side of the treatment tank, and a stirring blade, a bubble-type aeration component, a rotating blade component, a feeding mechanism, a pull-type aeration mechanism and a foam scraping component are arranged on the rotating shaft in sequence from bottom to top;

[0009] The bubble-type gas filling component includes a gas filling shell, which is fixed inside the treatment pool, and pistons are slidably connected on both sides of the gas filling shell. A crankshaft is provided in the middle of the piston, and the piston and the gas filling shell extend from the upper and lower ends of the crankshaft. Gears and rotating blades are respectively provided at the upper and lower ends of the crankshaft. A gear ring is fixedly connected to the rotating shaft, and the outer teeth of the gear ring are meshed with the gear. A shaft connecting block is connected to the upper shaft of the crankshaft, and a connecting shaft is provided on the other side of the shaft connecting block. The connecting shaft is plugged into the piston, and a sliding plate is fixedly connected to the end of the piston away from the rotating shaft, and air holes are evenly arranged on the sliding plate in the longitudinal direction. The upper end of the sliding plate is fitted with the gas filling shell, and an air outlet hole matching the air hole of the sliding plate is provided on the gas filling shell. An air inlet interface is provided at the rear end of the air inlet groove, and the air inlet interface is connected to the pipeline on the treatment pool through a hose;

[0010] The feeding mechanism includes a fan-shaped shell, the lower end of the fan-shaped shell is evenly provided with discharge holes, the wider side of the fan-shaped shell is provided with an opening, the inside of the fan-shaped shell is provided with a guide plate, the upper end of the fan-shaped shell is provided with an arc plate, the lower end of the arc plate is provided with an arc groove, a sliding sealing door is slidably connected to the opening, a pressure-stabilizing pump is provided on the side wall of the treatment pool, an electromagnetic valve is provided at the output end of the pressure-stabilizing pump, an induction switch is provided on the electromagnetic valve, a bevel is provided on the contact side of the electromagnetic valve and the induction switch, a discharge port is provided at the lower end of the electromagnetic valve, and the size of the discharge port is larger than the fan-shaped shell.

[0011] Preferably, transverse plates are evenly arranged on the upper end of the gear ring.

[0012] Preferably, an arc groove connected to the interior of the fan-shaped shell is provided at the lower end of the inner arc surface of the arc plate, and a flow-aiding hole is provided on the rotation direction side of the fan-shaped shell. The outer opening width of the flow-aiding hole is larger than the inner opening width, and the ratio of the outer and inner openings is three to one.

[0013] Preferably, the guide plate is fan-shaped, the width on both sides of the guide plate is smaller than the internal width of the fan-shaped shell, the upper end of the guide plate is provided with a guide groove, the guide grooves are radially arranged on the upper end of the guide plate, the height of the guide plate close to the opening side of the fan-shaped shell is higher than the other side of the guide plate, forming a slope setting.

[0014] Preferably, the sliding sealing door includes an upper plate, a lower plate, a first spring and a second spring. The upper end of the lower plate is connected to the upper plate through a vertical plate. One side of the upper plate is provided with a hypotenuse corresponding to the upper hypotenuse of the solenoid valve. A vertical plate is provided at the upper end of the upper plate close to the hypotenuse. A second spring is provided on the vertical plate. A spherical head is provided at the end of the second spring, and the spherical head is arranged corresponding to the induction switch. A first spring is provided at the lower end of the lower plate away from the opening side, and a vertical plate is provided at the other end of the first spring. The vertical plate at the other end is fixedly connected to the fan-shaped shell.

[0015] Preferably, the foam scraping assembly includes an airbag, which is sleeved on the rotating shaft on the rotating motor, the middle aperture of the airbag is larger than the diameter of the rotating shaft, rectangular grooves are provided on both sides of the aperture, longitudinal guide rails are provided on both sides of the rotating shaft, the longitudinal guide rails are slidably matched with the rectangular grooves, the width of the rectangular grooves is larger than the longitudinal guide rails, so as to facilitate the longitudinal movement of the airbag on the rotating shaft, slots are provided on both sides of the airbag, bolt columns are rotatably inserted in the slots, and a foam scraping groove is threadedly connected to the bolt column, an opening is provided on the working surface of the foam scraping groove for scraping off floating foam on the water surface, an inclined plate is provided at the lower end of the opening, semicircular guide rings are provided on both sides between the foam scraping grooves on both sides, an annular groove is provided on the upper end of the guide ring, and the annular groove is connected to the inside of the foam scraping groove.

[0016] Preferably, the pull-out aeration mechanism includes a pull-out shell, which is installed on the treatment tank, and an inner box body is slidably connected inside the pull-out shell, a vertical plate is provided at the upper end of the inner box body, a second tension spring is provided between the vertical plate and the pull-out shell, exhaust holes are evenly provided at the upper end of the pull-out shell, and exhaust holes are evenly provided at the upper end of the inner box body, the exhaust holes on the pull-out shell and the inner box body are arranged correspondingly, a connecting plate is provided on the inner box body near the rotating shaft side, a hook-shaped block is axially connected to the connecting plate, the hook-shaped block is connected to the pull-out shell near the rotating shaft side through a first tension spring, a rotating disk is provided on the rotating shaft, a groove matching the hook-shaped block is provided on the annular surface of the rotating disk, an air inlet interface is provided on one side of the pull-out shell, a hose is provided on the other side of the air inlet interface, and the hose is connected to the air inlet pipe on the treatment tank.

[0017] Preferably, the rotating blade assembly includes a rotating shell, which is sleeved on a rotating shaft, a T-shaped connecting block is provided at the upper end of the rotating shell, a rotating sleeve is slidably connected to the T-shaped connecting block, a gas filling pipe is provided at the upper end of the rotating sleeve, the other side of the gas filling pipe extends out of the treatment pool and is connected to an air pump, an L-shaped air channel is evenly provided at the upper end of the rotating shell, and the rotating sleeve and the lower end in contact with the L-shaped air channel are both provided with corresponding air holes, hollow blades are evenly provided on the outside of the rotating shell, the hollow blades are connected to the rotating shell, and jet holes that only allow gas to pass through are provided on the hollow blades.

[0018] Preferably, the stirring blade includes an air filling ring, an empty groove is provided inside the air filling ring, an air inlet pipe is connected to the pipe at the air inlet on one side of the air filling ring, the air inlet pipe is installed on the treatment tank, a rotating ring is fitted on the upper end of the air filling ring, guide vanes are evenly provided on the inner side of the rotating ring, the guide vanes are inclined, and the middle of the rotating ring is connected to the rotating shaft through a connecting shaft.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The rotating shaft is provided with stirring blades, bubble-type aeration components, rotating blade components, feeding mechanisms, pull-type aeration mechanisms and scraping components from bottom to top, which can effectively accelerate the combination of wastewater and oxygen in the air and evenly spread the activated sludge, realize aeration at different positions and angles, allow oxygen in the air to pass into the water, stir the liquid at the same time, accelerate the transfer of oxygen in the air to the liquid, and prevent the pool from The body sinks, strengthening the contact between the organic matter in the pool and the microorganisms and dissolved oxygen, and oxidizing and decomposing the organic matter in the sewage.

[0021] 2) By providing stirring blades, an aeration ring and the air holes on the rotating ring, the guide vanes are rotated and stirred to blow the activated sludge or impurities at the bottom upwards. At the same time, oxygen is added to the aeration ring through external equipment, and the oxygen is discharged through the rotating ring, so that the wastewater reacts with the oxygen, thereby increasing the wastewater treatment effect;

[0022] 3) The activated sludge at the bottom of the pool is rolled up by the guide vane, and the activated sludge is blown to the bubble aeration component in cooperation with the rotating ring to exhaust air. At the same time, when the activated sludge is rolled up by the guide vane, the rotating blades, driven by the crankshaft, provide secondary upward assistance to the mobile activated sludge, increasing the upward movement speed of the activated sludge. The piston of the gear ring meshing with the gear belt moves horizontally to pressurize the air pressure inside the aeration shell. The sliding plate is used to exhaust air intermittently, and the piston-type bubbles are hit farther, making the bubbles rise faster, improving the aeration process and combining with oxygen faster and accelerating the rising speed of the activated sludge. When the rotating shaft drives the gear ring to rotate, the gear ring passes through the upper horizontal plate to assist the activated sludge to enter the treatment area for more thorough mixing, so that the activated sludge is evenly dispersed in the treatment tank.

[0023] 4) The activated sludge is then moved upward by blowing gas through the bubble-type aeration component, and the rotating blade component is matched with the air hole at the upper end to assist the activated sludge to rise upward again. The hollow blade rotates to stir the liquid, and the air is discharged in coordination with the air outlet holes on the hollow blades. The aeration pipe is responsible for supplying air to the rotating shell through the rotating sleeve, and the air outlet holes on the rotating sleeve and the corresponding L-shaped airway on the rotating shell are intermittently supplying air, so that the gas is intermittent and more dense, and the oxygen contact with the wastewater is better. At the same time, the activated sludge is blown upward again through the opening at the upper end of the hollow blade, and the activated sludge is continuously raised to prevent most of the activated sludge from being completely reacted and settling to the bottom of the pool, wasting resources;

[0024] 5) The activated sludge is blown up by the rotating blade assembly and then blown to the upper end of the pull-type aeration mechanism. The rotating disk rotates to pull the hook block, and the hook block material is selected as a rubber material. When the hook block is at the limit distance of the rotating disk, it is separated from the rotating disk slot. At this time, the inner box driven by the hook block returns to the initial position through the second tension spring at the upper end. The air holes on the inner box and the air holes on the pull-out shell complete an intermittent match to achieve air outlet through the air holes, dense air outlet, and complete the cross-cutting effect, preventing the gas from being too large and not easy to be discharged from the water surface when combined with the wastewater, which wastes resources, making the bubbles come out more densely, speeding up the wastewater treatment time, and improving the contact effect with oxygen;

[0025] 6) The pull-type aeration mechanism blows upwards again, and the wastewater is stirred with the stirring blades, so that the oxygen in the air completely rises to the upper end of the treatment, and the wastewater in the treatment tank is completely mixed with the oxygen in the air. The stirring blades stir and the gas is transported upwards through the pull-type aeration mechanism, further transporting the activated sludge upwards, causing the activated sludge to rise to the top of the treatment tank, so that the activated sludge is stirred more evenly;

[0026] 7) By setting a feeding mechanism, the pressure-stabilizing pump transfers the liquid activated sludge to the fan-shaped shell through the electromagnetic valve. The fan-shaped shell contacts the induction switch through the spherical head to realize intermittent discharge of the electromagnetic valve. When the spherical head contacts the induction switch, the fan-shaped shell is driven by the rotating shaft to rotate to the lower end of the discharge port of the lower end of the electromagnetic valve, and the fan-shaped shell is fed. The fan-shaped shell is rotated and discharged through the discharge hole at the lower end of the fan-shaped shell, so that the activated sludge and the wastewater are better mixed, and the sewage treatment effect is accelerated. The guide plate and the grooves on the guide plate are used to help the flow of the activated sludge, which is better dispersed in the fan-shaped shell. By setting the flow-aiding holes and arc grooves, the liquid inside the fan-shaped shell is discharged faster;

[0027] 8) The device is equipped with a scraper assembly to realize automatic scraping of foam. The airbag is driven to rotate by the rotating shaft, and the foam scraper groove is used to scrape the floating foam on the surface of the wastewater. The defoaming agent is added into the guide ring to quickly remove the foam and prevent the accumulation of floating foam and overflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 It is a schematic structural diagram of a multi-stage treatment device for industrial wastewater according to the present invention;

[0029] Attached Figure 2 The present invention Figure 1 The schematic diagram of the C view structure provided;

[0030] Attached Figure 3 The present invention Figure 1 The schematic diagram of the D view structure provided;

[0031] Attached Figure 4 It is a schematic diagram of the connection structure between the rotating shaft at the lower end of the rotating motor and the bubble-type aeration component provided by the present invention;

[0032] Attached Figure 5 It is a schematic diagram of the structure of the feeding mechanism of the present invention;

[0033] Attached Figure 6 The present invention Figure 5 The E view structure diagram provided;

[0034] Attached Figure 7 It is a schematic diagram of the sliding door sealing structure of the present invention;

[0035] Attached Figure 8 It is a schematic diagram of the structure of the pressure-stabilizing pump and the solenoid valve of the present invention;

[0036] Attached Fig. 9 It is a schematic diagram of the connection structure of the fan-shaped housing and the internal guide plate of the present invention;

[0037] Attached Fig.10 This is a schematic structural diagram of the fan-shaped housing and the internal guide plate of the present invention from another perspective;

[0038] Attached Fig.11 It is a schematic diagram of the structure of the scraper assembly of the present invention;

[0039] Attached Fig.12 This is a schematic structural diagram of the scraper assembly of the present invention from another viewing angle;

[0040] Attached Fig.13 The present invention Fig.12 A view structure diagram provided;

[0041] Attached Fig.14 It is a partial structural schematic diagram of the pull-out aeration mechanism provided by the present invention;

[0042] Attached Fig.15 It is a schematic diagram of the structure of the pull-out aeration mechanism of the present invention;

[0043] Attached Fig.16 It is a schematic diagram of the structure of the pull-out aeration mechanism of the present invention;

[0044] Attached Fig.17 It is a schematic diagram of the inner box structure of the present invention;

[0045] Attached Fig.18 It is a schematic diagram of the structure of the rotating blade assembly of the present invention;

[0046] Attached Fig.19 The present invention Fig.19 The schematic diagram of the B view structure provided;

[0047] Attached Fig. 20 It is a schematic diagram of the partial cross-section structure of the gas-filling ring of the present invention;

[0048] Attached Fig.21 It is a three-dimensional structural schematic diagram of a multi-stage treatment device for industrial wastewater according to the present invention;

[0049] In the figure: 1. Straight ladder; 2. Rotating motor; 3. Scraping foam assembly; 31. Guide ring; 32. Air bag; 33. Bolt column; 34. Scraping foam groove; 35. Inclined plate; 4. Stirring blade; 5. Pull-out aeration mechanism; 51. Hook block; 52. First tension spring; 53. Connecting plate; 54. Inner box; 55. Pull-out shell; 56. Second tension spring; 57. Rotating plate; 6. Feeding mechanism; 61. Pressure-stabilizing pump; 62. Solenoid valve; 63. Induction switch; 64. Sliding sealing door; 641. Upper plate; 642. Lower plate; 643. First spring; 644. Second spring ; 65. arc plate; 66. arc groove; 67. fan-shaped shell; 68. guide plate; 69. flow-aiding hole; 7. rotating blade assembly; 71. hollow blade; 72. rotating sleeve; 73. rotating shell; 731. L-shaped airway; 74. gas filling pipe; 8. bubble-type gas filling assembly; 81. gear ring; 82. gas filling shell; 83. crankshaft; 84. shaft connection block; 85. rotating blade; 86. piston; 87. sliding plate; 89. air inlet groove; 9. stirring blade; 91. gas filling ring; 92. rotating ring; 93. guide plate; 10. treatment tank; 11. drain pipe. DETAILED DESCRIPTION

[0050] To facilitate the understanding of those skilled in the art, Figure 1-21 , the technical solution of the present invention is further specifically described.

[0051] Combination Figure 1As shown, a multi-stage treatment device for industrial wastewater includes a treatment tank 10, and the lower triangle of the treatment tank 10 is provided with support legs. The upper bracket of the treatment tank 10 is connected to a rotating motor 2, and the rotating shaft of the lower end of the rotating motor 2 extends to the lower end of the treatment tank 10. A stirring blade 4 is arranged on the rotating shaft. A drainage pipe 11 is arranged on one side of the treatment tank 10 for drainage. A vertical pipe is arranged at the lower end of the treatment tank 10, and a switch valve is arranged on the vertical pipe to facilitate the later cleaning of the inside of the treatment tank 10. A vertical ladder 1 is arranged on one side of the treatment tank 10 to facilitate workers to observe the reaction inside the treatment device. The rotating shaft is provided with stirring blades 9, bubble-type aeration components 8, rotating blade components 7, feeding mechanisms 6, pull-type aeration mechanisms 5 and scraping components 3 from bottom to top.

[0052] Combination Figure 2-Figure 4 As shown, the bubble-type gas filling component 8 includes a gas filling shell 82, and the gas filling shell 82 is fixed inside the treatment pool 10. Pistons 86 are slidably connected on both sides of the gas filling shell 82. Sealing rings are provided on both sides of the piston 86. A crankshaft 83 is provided in the middle of the piston 86. The piston 86 and the gas filling shell 82 extend from the upper and lower ends of the crankshaft 83. Gears and rotating blades 85 are respectively provided at the upper and lower ends of the crankshaft 83. A gear ring 81 is fixed on the rotating shaft, and a horizontal plate with a stirring effect is provided at the upper end of the gear ring 81. The advantage of such a setting is that the stirring effect of the device is increased, and the horizontal plate Uniformly arranged at the upper end of the gear ring 81, the outer teeth of the gear ring 81 are meshed with the gear, the crankshaft 83 is axially connected with a shaft block 84, the other side of the shaft block 84 is provided with a connecting shaft, the connecting shaft is plugged into the piston 86, the piston 86 is fixed with a sliding plate 87 away from the rotating shaft end, the sliding plate 87 is longitudinally uniformly provided with air holes, the upper end of the sliding plate 87 is fitted with the gas-filling shell 82, the gas-filling shell 82 is provided with an air outlet hole matched with the air hole of the sliding plate 87, the rear end of the air inlet groove 89 is provided with an air inlet interface, and the air inlet interface is connected to the pipeline on the treatment tank 10 through a hose;

[0053] Combination Figure 5As shown, the feeding mechanism 6 includes a fan-shaped shell 67, the lower end of the fan-shaped shell 67 is evenly provided with discharge holes, the wider side of the fan-shaped shell 67 is provided with an opening, the fan-shaped shell 67 is provided with a guide plate 68 inside, the upper end of the fan-shaped shell 67 is provided with an arc plate 65, the arc plate 65 plays a certain stirring role, and the lower end of the arc plate 65 is provided with an arc groove 66. The advantage of this design is that when the arc groove 66 is stirred in the fan-shaped shell 67, the liquid impacts the arc groove 66, and the liquid impacts the fan-shaped shell through the arc groove 66. Inside the shell 67, the liquid is discharged faster from the discharge hole at the lower end of the fan-shaped shell 67, and a sliding sealing door 64 is slidably connected to the opening. A pressure-stabilizing pump 61 is provided on the side wall of the treatment pool 10, and a solenoid valve 62 is provided at the output end of the pressure-stabilizing pump 61. An induction switch 63 is provided on the solenoid valve 62. The contact side of the solenoid valve 62 and the induction switch 63 is provided with a bevel. A discharge port is provided at the lower end of the solenoid valve 62, and the size of the discharge port is larger than the fan-shaped shell 67, so as to ensure that when the feed port of the fan-shaped shell 67 is located at the lower end of the discharge port, the inside of the fan-shaped shell 67 is filled at one time.

[0054] Combination Figure 1 and Figure 4 As shown, the upper end of the gear ring 81 is evenly provided with horizontal plates to increase the stirring effect.

[0055] Combination Figure 5 As shown, the lower end of the inner arc surface of the arc plate 65 is provided with an arc groove 66 connected to the inside of the fan-shaped shell 67, and the fan-shaped shell 67 is provided with a flow-aiding hole 69 on the rotation direction side. The outer opening width of the flow-aiding hole 69 is greater than the inner opening width, and the ratio of the outer and inner openings is three to one. The advantage of this design is that through the rotation of the fan-shaped shell 67, the liquid is pressed into the inside through the flow-aiding hole 69, forcing the internal activated sludge to be discharged only to the discharge hole at the lower end. In conjunction with the arc plate 65, the liquid is pressed against the arc groove 66 for a second time, thereby assisting in removing the activated sludge inside the fan-shaped shell 67.

[0056] Combination Fig. 9 and Fig.10 As shown, the guide plate 68 is fan-shaped, and the width on both sides of the guide plate 68 is smaller than the internal width of the fan-shaped shell 67. The upper end of the guide plate 68 is provided with a guide groove to increase the flow direction of the activated sludge. The guide grooves are radially arranged on the upper end of the guide plate 68. The height of the guide plate 68 close to the opening side of the fan-shaped shell 67 is higher than the other side of the guide plate 68, forming a slope setting to assist the flow direction of the activated sludge and fill the fan-shaped shell 67.

[0057] Combination Figure 7As shown, the sliding sealing door 64 includes an upper plate 641, a lower plate 642, a first spring 643 and a second spring 644. The upper end of the lower plate 642 is connected to the upper plate 641 through a vertical plate. One side of the upper plate 641 is provided with a hypotenuse corresponding to the upper hypotenuse of the solenoid valve 62. A vertical plate is provided near the hypotenuse on the upper end of the upper plate 641, and a second spring 644 is provided on the vertical plate. The advantage of this arrangement is that when the spherical head contacts the induction switch 63, it prevents the induction switch 63 from being damaged. A spherical head is provided at the end of the second spring 644, and the spherical head is provided corresponding to the induction switch 63. The lower end of the lower plate 642 is provided with a first spring 64 away from the opening side. 3. A vertical plate is provided at the other end of the first spring 643, and the vertical plate at the other end is fixedly connected to the fan-shaped shell 67. When the fan-shaped shell 67 moves to one side of the solenoid valve 62, the solenoid valve 62 and the sliding sealing door 64 first contact the inclined surface on the side, and the inclined surface cooperates with the inclined edge on the upper plate 641 of the sliding sealing door 64 to slide the sliding sealing door 64 to one side, so that the feed port of the fan-shaped shell 67 leaks out to facilitate feeding. After feeding, the first spring 643 is used to restore the sliding sealing door 64 to the state of blocking the feed port, so as to ensure that the activated sludge introduced is discharged through the discharge hole at the lower end, which is more evenly distributed and better in contact with the wastewater.

[0058] Combination Figure 11-13 As shown, the foam scraping assembly 3 includes an airbag 32, and the airbag 32 is sleeved on the rotating shaft on the rotating motor 2. The middle aperture of the airbag 32 is larger than the diameter of the rotating shaft, and rectangular grooves are provided on both sides of the aperture. Longitudinal guide rails are provided on both sides of the rotating shaft. The longitudinal guide rails are slidably matched with the rectangular grooves, and the width of the rectangular grooves is larger than the longitudinal guide rails, which is convenient for the airbag 32 to move longitudinally on the rotating shaft. Slots are provided on both sides of the airbag 32, and bolt columns 33 are rotatably inserted in the slots. The foam scraping groove 34 is threadedly connected to the bolt column 33. By rotating the bolt column 33, the height of the foam scraping groove 34 is adjusted according to the buoyancy of the airbag 32 and the water quality, so that the opening of the foam scraping groove 34 can better scrape off the floating foam. An opening is provided on the working surface of the foam scraping groove 34 for scraping off the floating foam on the water surface, and an inclined plate 35 is provided at the lower end of the opening. Semicircular guide rings 31 are provided on both sides between the foam scraping grooves 34 on both sides, and an annular groove is provided on the upper end of the guide ring 31, which is connected to the inside of the foam scraping groove 34.

[0059] Combination Figure 14-16As shown, the pull-out aeration mechanism 5 includes a pull-out shell 55, which is installed on the treatment tank 10. The pull-out shell 55 is slidably connected to the inner box 54. A slot is provided on one side of the inner box 54 to facilitate the air intake interface to enter the inner box 54. A vertical plate is provided at the upper end of the inner box 54. A second tension spring 56 is provided between the vertical plate and the pull-out shell 55. Exhaust holes are evenly provided at the upper end of the pull-out shell 55. Exhaust holes are evenly provided at the upper end of the inner box 54. The pull-out shell 55 and the inner box 54 are evenly provided with exhaust holes. 4 is arranged correspondingly, the inner box body 54 is provided with a connecting plate 53 near the rotating shaft side, and a hook-shaped block 51 is axially connected to the connecting plate 53. The material of the hook-shaped block 51 is preferably rubber, and the hook-shaped block 51 is connected to the pull-out shell body 55 near the rotating shaft side through a first tension spring 52. A rotating disk 57 is provided on the rotating shaft, and a groove matching the hook-shaped block 51 is provided on the annular surface of the rotating disk 57. An air inlet interface is provided on one side of the pull-out shell body 55, and a hose is provided on the other side of the air inlet interface. The hose is connected to the air inlet pipe on the treatment tank 10.

[0060] Combination Fig.18 and Fig.19 As shown, the rotating blade assembly 7 includes a rotating shell 73, which is sleeved on the rotating shaft. A T-shaped connecting block is provided at the upper end of the rotating shell 73, and a rotating sleeve 72 is slidably connected to the T-shaped connecting block. A gas filling pipe 74 is provided at the upper end of the rotating sleeve 72, and the other side of the gas filling pipe 74 extends out of the treatment tank 10 and is connected to the air pump. L-shaped air channels 731 are evenly provided on the upper end of the rotating shell 73, and the rotating sleeve 72 and the lower end in contact with the L-shaped air channel 731 are provided with corresponding air holes. Hollow blades 71 are evenly provided on the outer side of the rotating shell 73, and the hollow blades 71 are connected to the rotating shell 73. The hollow blades 71 are provided with jet holes that only allow gas to pass through.

[0061] Combination Figure 1 and Fig. 20 As shown, the stirring blade 9 includes an air filling ring 91, the interior of which is provided with an empty groove, and a uniform opening is provided at the upper end of the air filling ring 91, which is connected to the interior and exhausts gas to the opening provided on the rotating ring 92. A pipeline at the air inlet on one side of the air filling ring 91 is connected with an air inlet pipe, and the air inlet pipe is installed on the treatment tank 10. A rotating ring 92 is fitted on the upper end of the air filling ring 91, and a guide plate 93 is provided on the inner side of the rotating ring 92. The guide plate 93 is inclined. The middle of the rotating ring 92 is connected to the rotating shaft through a connecting shaft, and the rotating ring 92 rotates and intermittently cooperates with the air outlet hole at the upper end of the air filling ring 91, which has a cross-cutting effect on the generated gas, making the bubbles more dense and ensuring better combination with the liquid.

[0062] A multi-stage treatment device for industrial wastewater, the working process is as follows:

[0063] When in use, wastewater is added to the treatment pool 10 through the upper external pipeline (not shown in the figure), and water is pumped through the external water pipe and the pressure-stabilizing pump 61. The fan-shaped shell 67 is driven to rotate according to the rotating shaft. When the fan-shaped shell 67 turns to the solenoid valve 62, the spherical head contacts the induction switch 63, and the solenoid valve 62 is started. The solenoid valve 62 adds material to the fan-shaped shell 67, and the activated sludge fully flows into the fan-shaped shell 67 through the guide plate 68. The fan-shaped shell 67 is then driven by the rotating shaft, and the flow-aiding hole 69 is cooperated to pressurize the fan-shaped shell 67. The arc plate 65 and the arc groove 66 at the lower end are cooperated to assist in the secondary discharge of the activated sludge added to the fan-shaped shell 67, so that the activated sludge in the fan-shaped shell 67 can be completely flowed into the wastewater, so that the activated sludge and the wastewater are better combined. Through the discharge hole at the lower end of the fan-shaped shell 67 and the rotation of the fan-shaped shell 67,

[0064] At the same time, the rotating motor 2 is started, the rotating shaft drives the feeding mechanism 6 to rotate, the fan-shaped shell 67 rotates to the lower end of the electromagnetic valve 62, the spherical head contacts the induction switch 63, and the opening time of the electromagnetic valve 62 is controlled according to the actual situation to ensure that the inside of the fan-shaped shell 67 is filled with activated sludge. The pressure-stabilizing pump 61 is started to pump the external liquid activated sludge channel into the fan-shaped shell 67 through the electromagnetic valve 62, and the material is discharged through the discharge hole at the lower end of the fan-shaped shell 67. The activated sludge inside the fan-shaped shell 67 is discharged by rotating the flow-aiding hole 69 and the arc groove 66, and contacts with the wastewater, so that the microorganisms react with the wastewater to achieve wastewater treatment. Air is taken in on one side of the air filling ring 91. The air enters through the pipe, and the gas-filling ring 91 transmits the gas to the inside of the rotating ring 92. The gas outlet hole at the upper end of the gas-filling ring 91 rotates with the gas outlet hole on the rotating ring 92 to achieve the effect of rotary cutting. When the gas outlet holes on the upper and lower sides are coaxial, gas is discharged to generate dense bubbles. The oxygen in the bubbles reacts with the internal liquid to increase the reaction effect. At the same time, the guide plate 93 is driven to rotate by the rotation of the rotating shaft. The guide plate 93 is tilted. The guide plate 93 is tilted downward and close to the bottom wall of the treatment tank 10. The precipitated sludge at the bottom of the tank is directed upward through the guide plate 93 to prevent it from not reacting completely with the wastewater and settling in advance, causing waste.

[0065] The activated sludge sprays gas upward through the guide plate 93 and the air outlet of the rotating ring 92 to react with oxygen, so that the activated sludge is fully in contact with the wastewater. At the same time, the bubble-type aeration component drives the gear ring 81 to rotate through the rotating shaft. A horizontal plate is provided on the upper end of the gear ring 81 to assist in stirring the internal liquid and increase the combination effect of the activated sludge and the wastewater. Air is taken in through the air intake pipe at the rear end of the aeration shell 82, and then the gear ring 81 drives the crankshaft 83 to rotate through the gear. The crankshaft 83 drives the piston 86 to reciprocate through the connecting block, compressing the air cavities on both sides of the piston 86 in the aeration shell 82 accordingly, increasing the internal air pressure, and then the piston 86 moves At the same time, the sliding plate 87 is driven to move horizontally. Through the movement of the sliding plate 87, the air holes on the sliding plate 87 and the air outlet holes on the gas-filling shell 82 are continuously coaxially matched to discharge gas, so that the generated gas is in the form of bubbles and is relatively dense, so that it can better contact with the wastewater and react with the intake air. At the same time, the crankshaft 83 rotates, driving the rotating blades 85 at the lower end of the crankshaft 83 to rotate, so as to break up the particles in the wastewater and assist upward to prevent the precipitation of impurities. The rotation of the rotating shaft drives the hollow blades 71 to rotate, so as to assist the stirring of the inside of the treatment pool 10, and then through an external air pump (not shown in the figure, for those skilled in the art) Conventional means, which will not be described in detail here) are used to add air to the rotating sleeve 72 through the air filling pipe 74. The rotating sleeve 72 rotates so that the air holes at the lower end are intermittently matched with the contact holes of the L-shaped air channel 731. The gas is discharged through the air holes in the hollow blades 71 intermittently, and the air is aerated on one side. Then, the liquid is aerated again through the pull-out aeration mechanism 5. The rotating shaft drives the rotating disk 57. The rotating disk 57 pulls the hook block 51 through the slot provided, driving the inner box 54 to slide horizontally. At the same time, the gas is introduced into the inner box 54 through the air inlet interface. The air holes at the upper end of the inner box 54 and the upper end of the pull-out shell 55 are The air hole gap cooperates to realize that the gas comes out of the pull-out shell 55 as small bubbles, and the gas contacts and reacts with the wastewater again, and cooperates with the stirring blade 4 to rotate again to stir the internal liquid. At the same time, foam will be generated on the surface of the wastewater during treatment. The airbag 32 is driven to rotate by rotating the longitudinal guide rails on both sides. The airbag 32 makes the opening on the scraper groove 34 between the water surface through the buoyancy of the water, and the foam on the water surface is scraped into the scraper groove 34 through the opening on the scraper groove 34. At the same time, the material is added into the guide ring 31 through the feeding pipe such as the water pipe, and the defoaming agent flows into the scraper groove 34 through the guide ring 31 to eliminate the foam in the scraper groove 34.

[0066] In summary, the electronic or electrical components including but not limited to rotating motors, solenoid valves, induction switches, etc. are components in the prior art, obtained through private customization or purchase, and the electrical connections between the components are conventional circuit connections or electrical connections in the prior art, which are not within the scope of protection of the present invention.

[0067] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0068] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A multi-stage treatment device for industrial wastewater, comprising a treatment tank, wherein the upper end bracket of the treatment tank is connected to a rotating motor, the lower end rotating shaft of the rotating motor extends to the lower end of the treatment tank, and a stirring blade is arranged on the rotating shaft, a drainage pipe is arranged on one side of the treatment tank, a vertical pipe is arranged at the lower end of the treatment tank, a switch valve is arranged on the vertical pipe, and a vertical ladder is arranged on one side of the treatment tank, characterized in that: The rotating shaft is provided with a stirring blade, a bubble-type aeration component, a rotating blade component, a feeding mechanism, a pull-type aeration mechanism and a foam scraping component in sequence from bottom to top; The bubble-type gas filling component includes a gas filling shell, which is fixed inside the treatment pool, and pistons are slidably connected on both sides of the gas filling shell. A crankshaft is provided in the middle of the piston, and the piston and the gas filling shell extend from the upper and lower ends of the crankshaft. Gears and rotating blades are respectively provided at the upper and lower ends of the crankshaft. A gear ring is fixedly connected to the rotating shaft, and the outer teeth of the gear ring are meshed with the gear. A shaft connecting block is connected to the upper shaft of the crankshaft, and a connecting shaft is provided on the other side of the shaft connecting block. The connecting shaft is plugged into the piston, and a sliding plate is fixedly connected to the end of the piston away from the rotating shaft, and air holes are evenly arranged on the sliding plate in the longitudinal direction. The upper end of the sliding plate is fitted with the gas filling shell, and an air outlet hole matching the air hole of the sliding plate is provided on the gas filling shell. An air inlet interface is provided at the rear end of the air inlet groove, and the air inlet interface is connected to the pipeline on the treatment pool through a hose; The feeding mechanism includes a fan-shaped shell, the lower end of the fan-shaped shell is evenly provided with discharge holes, the wider side of the fan-shaped shell is provided with an opening, the inside of the fan-shaped shell is provided with a guide plate, the upper end of the fan-shaped shell is provided with an arc plate, the lower end of the arc plate is provided with an arc groove, a sliding sealing door is slidably connected to the opening, a pressure-stabilizing pump is provided on the side wall of the treatment pool, an electromagnetic valve is provided at the output end of the pressure-stabilizing pump, an induction switch is provided on the electromagnetic valve, a bevel is provided on the contact side of the electromagnetic valve and the induction switch, a discharge port is provided at the lower end of the electromagnetic valve, and the size of the discharge port is larger than the fan-shaped shell.

2. A multi-stage treatment device for industrial wastewater according to claim 1, characterized in that: The upper end of the gear ring is evenly provided with transverse plates.

3. A multi-stage treatment device for industrial wastewater according to claim 1, characterized in that: An arc groove communicating with the interior of the fan-shaped shell is provided at the lower end of the inner arc surface of the arc plate, and a flow-aiding hole is provided on the rotation direction side of the fan-shaped shell. The outer opening width of the flow-aiding hole is greater than the inner opening width, and the ratio of the outer and inner openings is three to one.

4. A multi-stage treatment device for industrial wastewater according to claim 1, characterized in that: The guide plate is fan-shaped, and the width of both sides of the guide plate is smaller than the internal width of the fan-shaped shell. The upper end of the guide plate is provided with a guide groove, and the guide grooves are radially arranged on the upper end of the guide plate. The height of the guide plate close to the opening side of the fan-shaped shell is higher than the other side of the guide plate, forming a slope setting.

5. A multi-stage treatment device for industrial wastewater according to claim 1, characterized in that: The sliding sealing door includes an upper plate, a lower plate, a first spring and a second spring. The upper end of the lower plate is connected to the upper plate through a vertical plate. One side of the upper plate is provided with a hypotenuse corresponding to the upper hypotenuse of the solenoid valve. The upper end of the upper plate is provided with a vertical plate close to the hypotenuse. The second spring is provided on the vertical plate. A spherical head is provided at the end of the second spring. The spherical head is arranged corresponding to the induction switch. The lower end of the lower plate is provided with a first spring away from the opening side. The other end of the first spring is provided with a vertical plate, and the other end of the vertical plate is fixedly connected to the fan-shaped shell.

6. A multi-stage treatment device for industrial wastewater according to claim 1, characterized in that: The foam scraping assembly includes an airbag, which is sleeved on the rotating shaft on the rotating motor. The middle aperture of the airbag is larger than the diameter of the rotating shaft. Rectangular grooves are provided on both sides of the aperture. Longitudinal guide rails are provided on both sides of the rotating shaft. The longitudinal guide rails are slidably matched with the rectangular grooves. The width of the rectangular grooves is larger than the longitudinal guide rails, which facilitates the longitudinal movement of the airbag on the rotating shaft. Slots are provided on both sides of the airbag, and bolt columns are rotatably inserted in the slots. The foam scraping grooves are threadedly connected on the bolt columns. An opening is provided on the working surface of the foam scraping groove for scraping off floating foam on the water surface. An inclined plate is provided at the lower end of the opening. Semicircular guide rings are provided on both sides between the foam scraping grooves on both sides. An annular groove is provided on the upper end of the guide ring, and the annular groove is connected to the inside of the foam scraping groove.

7. A multi-stage treatment device for industrial wastewater according to claim 1, characterized in that: The pull-out aeration mechanism includes a pull-out shell, which is installed on the treatment tank, an inner box body is slidably connected inside the pull-out shell, a vertical plate is provided at the upper end of the inner box body, a second tension spring is provided between the vertical plate and the pull-out shell, exhaust holes are evenly provided at the upper end of the pull-out shell, and exhaust holes are evenly provided at the upper end of the inner box body. The exhaust holes on the pull-out shell and the inner box body are arranged correspondingly, a connecting plate is provided on the inner box body near the rotating shaft side, a hook-shaped block is axially connected to the connecting plate, the hook-shaped block is connected to the pull-out shell near the rotating shaft side through a first tension spring, a rotating disk is provided on the rotating shaft, and a groove matching the hook-shaped block is provided on the annular surface of the rotating disk, an air inlet interface is provided on one side of the pull-out shell, a hose is provided on the other side of the air inlet interface, and the hose is connected to the air inlet pipe on the treatment tank.

8. A multi-stage treatment device for industrial wastewater according to claim 1, characterized in that: The rotating blade assembly includes a rotating shell, which is sleeved on a rotating shaft, a T-shaped connecting block is provided on the upper end of the rotating shell, a rotating sleeve is slidably connected to the T-shaped connecting block, a gas filling pipe is provided on the upper end of the rotating sleeve, and the other side of the gas filling pipe extends out of the treatment pool and is connected to an air pump, an L-shaped airway is evenly provided on the upper end of the rotating shell, and the rotating sleeve and the lower end in contact with the L-shaped airway are both provided with corresponding air holes, hollow blades are evenly provided on the outer side of the rotating shell, the hollow blades are connected to the rotating shell, and jet holes that only allow gas to pass through are provided on the hollow blades.

9. A multi-stage treatment device for industrial wastewater according to claim 1, characterized in that: The stirring blade includes an air filling ring, which has an empty groove inside. A pipe at the air inlet on one side of the air filling ring is connected to an air inlet pipe, and the air inlet pipe is installed on the treatment tank. A rotating ring is fitted on the upper end of the air filling ring, and guide vanes are evenly arranged on the inner side of the rotating ring. The guide vanes are inclined, and the middle of the rotating ring is connected to the rotating shaft through a connecting shaft.

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