A drainage device for purifying and disinfecting wastewater to avoid secondary pollution

Abstract

The present invention provides a drainage device for purifying and disinfecting wastewater to avoid secondary pollution, which relates to the field of water treatment technology and comprises a weighing bin, an adsorption filter bin and a bracket. The weighing bin is connected to one side of the top of the adsorption filter bin, and a filter adsorption filler is arranged inside the adsorption filter bin. The bracket is arranged at one side of the adsorption filter bin, and a stirring drum is arranged on the inner side of the bracket through a sealing bearing ring for rotation. A liquid guide tube is connected to one side of the bottom of the adsorption filter bin. The present invention utilizes the function of the filter adsorption filler to preliminarily filter out impurities and odors in the water, and subsequently discharges the water into the stirring drum, utilizes electrode plates to electrolyze an electrolyte water mixture to generate acidic hypochlorous acid electrolyzed water, and atomizes the water through an ultrasonic atomizer, and discharges the disinfection mist from the atomization conduit into the stirring drum in coordination with the wind force of an air inlet fan. The rotation of the stirring drum is utilized to make the wastewater fully contact with the electrolyte disinfection mist, so as to achieve the purpose of killing pathogens, and the water treatment is more comprehensive to avoid secondary pollution.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a drainage device for purifying and disinfecting wastewater to avoid secondary pollution. Background Art

[0002] Medical wastewater is mainly sewage discharged from the hospital's treatment rooms, laboratories, wards, laundry rooms, X-ray studios and operating rooms. Its source and composition are very complex. In addition to a large number of pathogens such as bacteria, viruses, and worm eggs, medical wastewater also contains chemical agents and radioactive isotopes, which have several major characteristics of space pollution, acute infection and latent infection. If medical wastewater containing pathogenic microorganisms is not disinfected, inactivated or other harmless treatments, but is directly discharged into the city sewer, it will often cause secondary pollution of water and soil, and in severe cases will cause various diseases or lead to the outbreak of waterborne infectious diseases;

[0003] Medical wastewater has attracted public attention many times. The discharge of medical wastewater causes great harm to water resources and has become a source of harm to people's health. In the prior art, major hospitals lack equipment for reasonable disposal of seriously harmful medical wastewater, and ignore the malicious water pollution incidents that may be caused by viral infection in wastewater. Some hospitals use simple industrial water treatment equipment, which often only has the function of filtering, and it is difficult to eradicate harmful substances such as pathogens, and lacks a comprehensive treatment effect on water. Therefore, the present invention proposes a drainage device for purifying and disinfecting wastewater to avoid secondary pollution to solve the problems existing in the prior art. Summary of the invention

[0004] In view of the above problems, the present invention proposes a drainage device for purifying and disinfecting wastewater to avoid secondary pollution. The drainage device for purifying and disinfecting wastewater to avoid secondary pollution utilizes the rotation of a mixing drum to allow the wastewater to fully contact with the electrolyte disinfection mist, thereby achieving the purpose of killing pathogens, and treating water more comprehensively to avoid secondary pollution.

[0005] To achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: a drainage device for purifying and disinfecting wastewater to avoid secondary pollution, comprising a weighing bin, an adsorption filter bin and a bracket, wherein the weighing bin is connected to one side of the top of the adsorption filter bin, and a filter adsorption filler is arranged inside the adsorption filter bin, the bracket is arranged at one side of the adsorption filter bin, and a stirring drum is rotatably arranged on the inner side of the bracket through a sealing bearing ring, a liquid guide tube is connected to one side of the bottom of the adsorption filter bin, and the liquid guide tube passes through one side of the bracket and is connected to the stirring drum;

[0006] A disinfection chamber is provided on one side of the top of the adsorption and filtration chamber, and an electrolyte-water mixture is filled inside the disinfection chamber, an electrode plate and an ultrasonic atomizer are provided at the bottom of the disinfection chamber, an air inlet is provided at one end of the top of the disinfection chamber, and an atomization duct is connected to the other end of the top of the disinfection chamber, the atomization duct passes through one side of the bracket and is connected to the stirring drum, a discharge pipe is provided on the side of the bracket away from the adsorption and filtration chamber, and the discharge pipe is connected to the stirring drum.

[0007] A further improvement is that a gravity sensor is provided between the bottom of the weighing bin and the adsorption filtration bin, the signal output end of the gravity sensor is connected to a single chip microcomputer, and the single chip microcomputer starts the overall operation of the device according to the signal of the gravity sensor.

[0008] A further improvement is that a valve tube is provided at the bottom of the weighing bin, and the valve tube is a hose, and the lower end of the valve tube extends to the interior of the adsorption filtration bin.

[0009] A further improvement is that the filtering and adsorption filler includes a filter screen, an activated carbon filler and a medical stone ball filler, and the filter screen, the activated carbon filler and the medical stone ball filler are arranged in the adsorption and filtration bin from left to right, and the output end of the valve tube is located at the left side of the filter screen.

[0010] Further improvements are: a cleaning bin is provided on one side of the bottom of the adsorption filtration bin, and a pneumatic cylinder is provided at the bottom of the cleaning bin, the output end of the pneumatic cylinder extends to the interior of the cleaning bin and is provided with a U-shaped plate, a cleaning roller is rotatably provided inside the U-shaped plate, and the cleaning roller is a hollow roller, an adsorption hole is provided on the outside of the cleaning roller, and a sealed bearing is provided at one end of the cleaning roller.

[0011] A further improvement is that a vacuum cleaner is provided inside the cleaning bin, and a stretching tube is provided at the input end of the vacuum cleaner, the input end of the stretching tube is connected to the cleaning roller through a sealed bearing, and an opening and closing door is rotatably provided at the bottom of the adsorption and filtration bin above the cleaning bin, and the opening and closing door is driven to rotate by a motor.

[0012] A further improvement is that a liquid adding pipe is provided on the top of the disinfection chamber, and a sealing cover is provided on the liquid adding pipe, and a liquid level display window is provided on one side of the disinfection chamber.

[0013] A further improvement is that a first pressure pump is provided on the liquid guiding tube, and a second pressure pump is provided on the discharge tube.

[0014] A further improvement is that a gear ring is provided on the outer side of the mixing drum, a motor is provided below the inner side of the bracket, and a gear matched with the gear ring is provided at the output end of the motor.

[0015] A further improvement is that a grid plate is provided above the inner side of the weighing bin, and a partition is provided inside the weighing bin below the grid plate, a through hole is provided on the partition, and a float is placed above the through hole, a sinker rope is provided below the float, the sinker rope passes through the through hole and is connected to a sinker block, and the length of the sinker block and the diameter of the float are both larger than the diameter of the through hole.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention receives wastewater through a weighing bin, and the wastewater enters an adsorption and filtration bin, and utilizes the filtering and adsorption filler to preliminarily filter out impurities and odors in the water, and then discharges the wastewater into a mixing drum. In this process, an electrolyte-water mixture is electrolyzed by an electrode plate to generate acidic hypochlorous acid electrolyzed water, which is atomized by an ultrasonic atomizer, and the disinfecting mist is discharged from the atomization duct into the mixing drum in coordination with the wind force of the air intake fan. The rotation of the mixing drum allows the wastewater to fully contact with the electrolyte disinfecting mist, thereby achieving the purpose of killing bacteria, making the water treatment more comprehensive and avoiding secondary pollution.

[0018] 2. After processing a process, the opening and closing door of the present invention rotates to open. At this time, the U-shaped plate is lifted up by the pneumatic cylinder, so that the cleaning roller contacts the filter screen. With the adsorption effect of the vacuum cleaner, the impurities on the filter screen are adsorbed into the stretching tube through the adsorption holes and then enter the vacuum cleaner, which is convenient for cleaning and has diversified functions.

[0019] 3. The present invention senses the weight of the wastewater in the weighing bin through a gravity sensor. When the weight reaches a set threshold, the single-chip microcomputer starts the device to run, and opens the valve of the valve pipe to release the wastewater, performing a process of processing without real-time operation, thus saving costs.

[0020] 4. When the waste water is poured into the weighing bin, the waste water makes the float float, and the water enters the weighing bin from the through hole. Then, the float covers the through hole through the action of the sinker, so as to avoid the return of odor and impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 This is a schematic diagram of the interior of the disinfection chamber of the present invention;

[0023] Figure 3 It is a schematic diagram of the interior of the adsorption filtration chamber and the cleaning chamber of the present invention;

[0024] Figure 4 A schematic diagram of a cleaning roller of the present invention;

[0025] Figure 5 Schematic diagram of the partition of the present invention.

[0026] Among them: 1. Weighing bin; 2. Adsorption and filtration bin; 3. Bracket; 4. Sealed bearing ring; 5. Mixing drum; 6. Liquid guide tube; 7. Disinfection bin; 8. Electrolyte water mixture; 9. Electrode plate; 10. Ultrasonic atomizer; 11. Air inlet fan; 12. Atomization duct; 13. Discharge pipe; 14. Gravity sensor; 15. Valve pipe; 16. Filter screen; 17. Activated carbon filler; 18. Medical stone ball filler; 19. Cleaning bin; 20. Pneumatic cylinder; 21. U-shaped plate; 22. Cleaning roller; 23. Adsorption hole; 24. Sealed bearing; 25. Vacuum cleaner; 26. Stretch tube; 27. Opening and closing door; 28. Liquid adding tube; 29. ​​First booster pump; 30. Second booster pump; 31. Gear ring; 32. Motor; 33. Gear; 34. Grid plate; 35. Partition; 36. Float; 37. Sinking block. DETAILED DESCRIPTION

[0027] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0028] Embodiment 1

[0029] according to Figure 1 , 2 As shown in Figures 3, 4 and 5, this embodiment proposes a drainage device for purifying and disinfecting wastewater to avoid secondary pollution, including a weighing bin 1, an adsorption filter bin 2 and a bracket 3, wherein the weighing bin 1 is connected to one side of the top of the adsorption filter bin 2, and a filter adsorption filler is provided inside the adsorption filter bin 2, the bracket 3 is provided at one side of the adsorption filter bin 2, and a stirring drum 5 is rotatably provided on the inner side of the bracket 3 through a sealing bearing ring 4, and a liquid guide tube 6 is connected to one side of the bottom of the adsorption filter bin 2, and the liquid guide tube 6 passes through one side of the bracket 3 and is connected to the stirring drum 5;

[0030] A disinfection chamber 7 is provided on one side of the top of the adsorption and filtration chamber 2, and an electrolyte water mixture 8 is installed inside the disinfection chamber 7. An electrode plate 9 and an ultrasonic atomizer 10 are provided at the bottom of the disinfection chamber 7. An air inlet 11 is provided at one end of the top of the disinfection chamber 7, and an atomization conduit 12 is connected to the other end of the top of the disinfection chamber 7. The atomization conduit 12 passes through one side of the bracket 3 and is connected to the mixing drum 5. A discharge pipe 13 is provided on the side of the bracket 3 away from the adsorption and filtration chamber 2, and the discharge pipe 13 is connected to the mixing drum 5. When in use, the waste water is received by the weighing chamber 1, and the waste water enters the adsorption and filtration chamber 2. The impurities and odors in the water are initially filtered out by the filtering and adsorption filler, and then discharged into the mixing drum 5. In this process, the electrolyte water mixture is electrolyzed by the electrode plate 9 to generate acidic hypochlorous acid electrolyzed water, and is atomized by the ultrasonic atomizer 10. The wind force of the air inlet 11 is used to discharge the disinfection mist from the atomization conduit 12 into the mixing drum 5. The rotation of the mixing drum 5 makes the waste water fully contact with the electrolyte disinfection mist to achieve the purpose of killing bacteria. The electrolyte water mixture 8 is a mixture of edible salt NaCl, edible acid HCL and tap water to form a slightly acidic dilute salt water. The electrode plate 9 is provided with a DSA cathode and an anode for electrolyzing the electrolyte and water to produce slightly acidic hypochlorous acid electrolyzed water.

[0031] A gravity sensor 14 is provided between the bottom of the weighing bin 1 and the adsorption and filtration bin 2. The signal output end of the gravity sensor 14 is connected to a single chip microcomputer, and the single chip microcomputer starts the overall operation of the device according to the signal of the gravity sensor 14. A valve pipe 15 is provided at the bottom of the weighing bin 1, and the valve pipe 15 is a hose, and the lower end of the valve pipe 15 extends to the inside of the adsorption and filtration bin 2. When in use, the weight of the wastewater in the weighing bin 1 is sensed by the gravity sensor 14. When the weight reaches the set threshold, the device is started by the single chip microcomputer, and the valve of the valve pipe 15 is opened to release the wastewater, and a process is processed without real-time operation, saving costs.

[0032] The filtering adsorption filler includes a filter screen 16, an activated carbon filler 17 and a medical stone ball filler 18, and the filter screen 16, the activated carbon filler 17 and the medical stone ball filler 18 are sequentially arranged in the adsorption filtration bin 2 from left to right, and the output end of the valve pipe 15 is located at the left side of the filter screen 16. When in use, the waste water is received by the weighing bin 1, and the waste water enters the adsorption filtration bin 2 through the valve pipe 15, and the impurities and odors in the water are initially filtered out by the function of the filtering adsorption filler.

[0033] A cleaning chamber 19 is provided at one side of the bottom of the adsorption and filtration chamber 2, and a pneumatic cylinder 20 is provided at the bottom of the cleaning chamber 19. The output end of the pneumatic cylinder 20 extends to the inside of the cleaning chamber 19 and is provided with a U-shaped plate 21. A cleaning roller 22 is rotatably provided inside the U-shaped plate 21, and the cleaning roller 22 is a hollow roller. Adsorption holes 23 are provided on the outside of the cleaning roller 22, and a sealed bearing 24 is provided at one end of the cleaning roller 22. A vacuum cleaner 25 is provided inside the cleaning chamber 19, and a stretching tube 26 is provided at the input end of the vacuum cleaner 25. The input end of the stretching tube 26 is connected to the cleaning roller 22 through the sealed bearing 24. During the vacuuming process, the rotation of the cleaning roller 22 is not affected. An opening and closing door 27 is rotatably provided at the bottom of the adsorption and filtration chamber 2 at the position above the cleaning chamber 19, and the opening and closing door 27 is driven to rotate by a motor. After processing a process, the motor drives the opening and closing door 27 to rotate and open. At this time, the U-shaped plate 21 is lifted up by the pneumatic cylinder 20, so that the cleaning roller 22 contacts the filter 16. With the adsorption effect of the vacuum cleaner 25, the impurities on the filter 16 are adsorbed into the stretch tube 26 through the adsorption holes 23, and then enter the vacuum cleaner 25 for easy cleaning.

[0034] A liquid adding pipe 28 is provided on the top of the disinfection chamber 7, and a sealing cap is provided on the liquid adding pipe 28. A liquid level display window is provided on one side of the disinfection chamber 7. When the electrolyte water mixture 8 in the disinfection chamber 7 is insufficient, the electrolyte water mixture 8 is added into the disinfection chamber 7 through the liquid adding pipe 28.

[0035] The liquid conduit 6 is provided with a first pressure pump 29, and the discharge pipe 13 is provided with a second pressure pump 30. When in use, the water after the impurities and odor in the water are initially filtered out by the filter adsorption filler is discharged from the liquid conduit 6 into the mixing drum 5 through the first pressure pump 29. After the mixing drum 5 is stirred, the second pressure pump 30 is started to pump the water out of the mixing drum 5 and discharge it from the discharge pipe 13.

[0036] The outer side of the mixing drum 5 is provided with a gear ring 31, the lower side of the inner side of the bracket 3 is provided with a motor 32, and the output end of the motor 32 is provided with a gear 33 adapted to the gear ring 31. When in use, the motor 32 drives the gear 33 to rotate, thereby driving the gear ring 31 and the mixing drum 5 to rotate, so that the wastewater is fully in contact with the electrolyte disinfection mist, thereby achieving the purpose of killing bacteria.

[0037] Embodiment 2

[0038] according to Figure 1 , 2As shown in Figure 5, this embodiment proposes a drainage device for purifying and disinfecting wastewater to avoid secondary pollution, including a weighing bin 1, an adsorption filter bin 2 and a bracket 3, wherein the weighing bin 1 is connected to one side of the top of the adsorption filter bin 2, and a filter adsorption filler is provided inside the adsorption filter bin 2, the bracket 3 is provided at one side of the adsorption filter bin 2, and a stirring drum 5 is rotatably provided on the inner side of the bracket 3 through a sealing bearing ring 4, and a liquid guide tube 6 is connected to one side of the bottom of the adsorption filter bin 2, and the liquid guide tube 6 passes through one side of the bracket 3 and is connected to the stirring drum 5;

[0039] A disinfection chamber 7 is provided on one side of the top of the adsorption and filtration chamber 2, and an electrolyte water mixture 8 is installed inside the disinfection chamber 7. An electrode plate 9 and an ultrasonic atomizer 10 are provided at the bottom of the disinfection chamber 7. An air inlet 11 is provided at one end of the top of the disinfection chamber 7, and an atomization conduit 12 is connected to the other end of the top of the disinfection chamber 7. The atomization conduit 12 passes through one side of the bracket 3 and is connected to the mixing drum 5. A discharge pipe 13 is provided on the side of the bracket 3 away from the adsorption and filtration chamber 2, and the discharge pipe 13 is connected to the mixing drum 5. When in use, the waste water is received by the weighing chamber 1, and the waste water enters the adsorption and filtration chamber 2. The impurities and odors in the water are initially filtered out by the filtering and adsorption filler, and then discharged into the mixing drum 5. In this process, the electrolyte water mixture is electrolyzed by the electrode plate 9 to generate acidic hypochlorous acid electrolyzed water, and is atomized by the ultrasonic atomizer 10. The wind force of the air inlet 11 is used to discharge the disinfection mist from the atomization conduit 12 into the mixing drum 5. The rotation of the mixing drum 5 makes the waste water fully contact with the electrolyte disinfection mist to achieve the purpose of killing bacteria. The electrolyte water mixture 8 is a mixture of edible salt NaCl, edible acid HCL and tap water to form a slightly acidic dilute salt water. The electrode plate 9 is provided with a DSA cathode and an anode for electrolyzing the electrolyte and water to produce slightly acidic hypochlorous acid electrolyzed water.

[0040] A grid plate 34 is provided above the inner side of the weighing bin 1, and a partition plate 35 is provided inside the weighing bin 1 below the grid plate 34. A through hole is provided on the partition plate 35, and a floating ball 36 is placed above the through hole. A pendant rope is provided below the floating ball 36, and the pendant rope passes through the through hole and is connected to a pendant block 37. The length of the pendant block 37 and the diameter of the floating ball 36 are both greater than the diameter of the through hole. When wastewater is poured into the weighing bin 1, the wastewater makes the floating ball 36 float, and the water enters the weighing bin 1 from the through hole, and then the floating ball 36 covers the through hole through the action of the pendant block 37 to avoid anti-taste and anti-impurities.

[0041] The present invention receives wastewater through a weighing bin 1, and the wastewater enters an adsorption filter bin 2, and uses the function of filtering and adsorbing fillers to initially filter out impurities and odors in the water, and then discharges it into a mixing drum 5. In this process, the electrode plate 9 is used to electrolyze the electrolyte water mixture to produce acidic hypochlorous acid electrolyzed water, and then atomizes it through an ultrasonic atomizer 10, and the wind force of the air inlet fan 11 is used to discharge the disinfection mist from the atomization conduit 12 into the mixing drum 5. The rotation of the mixing drum 5 allows the wastewater to fully contact the electrolyte disinfection mist, achieving the purpose of killing bacteria, and the treatment of water is more comprehensive to avoid secondary pollution. In addition, after processing a process, the present invention rotates and opens the opening and closing door 27. At this time, the U-shaped plate 21 is lifted by the pneumatic cylinder 20, so that the cleaning roller 22 contacts the filter screen 16, and cooperates with the adsorption function of the vacuum cleaner 25 to facilitate the impurities on the filter screen 16 to be adsorbed into the stretching tube 26 through the adsorption hole 23, and then enter the vacuum cleaner 25, which is convenient for cleaning and has diversified functions. At the same time, the present invention senses the weight of the wastewater in the weighing bin 1 through the gravity sensor 14. When the weight reaches the set threshold, the single chip microcomputer starts the device to run, and opens the valve of the valve pipe 15 to release the wastewater, and performs a process of processing without real-time operation, saving costs. In addition, when the wastewater is poured into the weighing bin 1, the wastewater makes the float 36 float, and the water enters the weighing bin 1 from the through hole, and then the float 36 covers the through hole through the action of the sinker 37 to avoid anti-taste and anti-impurities.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A drainage device for purifying and disinfecting wastewater to avoid secondary pollution, comprising a weighing chamber (1), an adsorption and filtration chamber (2) and a bracket (3), characterized in that: The weighing bin (1) is connected to one side of the top of the adsorption filter bin (2), and a filter adsorption filler is provided inside the adsorption filter bin (2); the bracket (3) is provided at one side of the adsorption filter bin (2), and a stirring drum (5) is rotatably provided on the inner side of the bracket (3) through a sealing bearing ring (4); a liquid guide tube (6) is connected to one side of the bottom of the adsorption filter bin (2), and the liquid guide tube (6) passes through one side of the bracket (3) and is connected to the stirring drum (5); A disinfection chamber (7) is provided on one side of the top of the adsorption and filtration chamber (2), and an electrolyte water mixture (8) is contained in the disinfection chamber (7); an electrode plate (9) and an ultrasonic atomizer (10) are provided at the bottom of the disinfection chamber (7); an air inlet fan (11) is provided at one end of the top of the disinfection chamber (7), and an atomization conduit (12) is connected to the other end of the top of the disinfection chamber (7); the atomization conduit (12) passes through one side of the bracket (3) and is connected to the stirring drum (5); a discharge pipe (13) is provided on the side of the bracket (3) away from the adsorption and filtration chamber (2), and the discharge pipe (13) is connected to the stirring drum (5); A gravity sensor (14) is provided between the bottom of the weighing bin (1) and the adsorption filtration bin (2); a signal output end of the gravity sensor (14) is connected to a single chip microcomputer; the single chip microcomputer starts the overall operation of the device according to the signal of the gravity sensor (14); a valve pipe (15) is provided at the bottom of the weighing bin (1); the valve pipe (15) is a hose; the lower end of the valve pipe (15) extends to the interior of the adsorption filtration bin (2); the filtration adsorption filler comprises a filter screen (16), an activated carbon filler (17) and a medical stone ball filler (18); and the filter screen (16), the activated carbon filler (17) and the medical stone ball filler (18) are connected from From left to right, the valve tube (15) is arranged in the adsorption filter chamber (2), the output end of the valve tube (15) is located at the left side of the filter screen (16), a cleaning chamber (19) is arranged on one side of the bottom of the adsorption filter chamber (2), and a pneumatic cylinder (20) is arranged at the bottom of the cleaning chamber (19), the output end of the pneumatic cylinder (20) extends to the inside of the cleaning chamber (19) and is provided with a U-shaped plate (21), a cleaning roller (22) is rotatably arranged inside the U-shaped plate (21), and the cleaning roller (22) is a hollow roller, an adsorption hole (23) is arranged on the outside of the cleaning roller (22), and a sealed bearing (24) is arranged at one end of the cleaning roller (22); A grid plate (34) is provided above the inner side of the weighing bin (1), and a partition plate (35) is provided inside the weighing bin (1) below the grid plate (34), a through hole is provided on the partition plate (35), and a floating ball (36) is placed above the through hole, a pendant rope is provided below the floating ball (36), and the pendant rope passes through the through hole and is connected to a pendant block (37), and the length of the pendant block (37) and the diameter of the floating ball (36) are both larger than the diameter of the through hole.

2. A drainage device for purifying and disinfecting wastewater to avoid secondary pollution according to claim 1, characterized in that: A vacuum cleaner (25) is provided inside the cleaning bin (19), and a stretching tube (26) is provided at the input end of the vacuum cleaner (25), and the input end of the stretching tube (26) is connected to the cleaning roller (22) via a sealing bearing (24). An opening and closing door (27) is rotatably provided at the bottom of the adsorption and filtration bin (2) above the cleaning bin (19), and the opening and closing door (27) is driven to rotate by a motor.

3. A drainage device for purifying and disinfecting wastewater to avoid secondary pollution according to claim 1, characterized in that: A liquid adding pipe (28) is provided on the top of the disinfection chamber (7), and a sealing cover is provided on the liquid adding pipe (28). A liquid level display window is provided on one side of the disinfection chamber (7).

4. A drainage device for purifying and disinfecting wastewater to avoid secondary pollution according to claim 1, characterized in that: The liquid guiding tube (6) is provided with a first pressure pump (29), and the discharge tube (13) is provided with a second pressure pump (30).

5. A drainage device for purifying and disinfecting wastewater to avoid secondary pollution according to claim 1, characterized in that: A gear ring (31) is provided on the outer side of the mixing drum (5), a motor (32) is provided below the inner side of the bracket (3), and a gear (33) matching the gear ring (31) is provided at the output end of the motor (32).

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