Photocatalytic oxidation device for sewage

Abstract

The present invention discloses a sewage photocatalytic oxidation device, which relates to the field of sewage treatment, including a box, a plurality of purification boxes arranged in the box from top to bottom, a water inlet device arranged on one side of the purification box, a drainage device on the other side, and a plurality of purification chambers are divided into the purification box by a linear array of partitions; the drainage device includes a plurality of drainage holes penetrated through the outer wall of the purification box, a water collection box arranged on the outer wall of the purification box, and a plurality of valve plate components arranged on the outer wall of the purification box and used to seal the drainage holes; the water inlet device includes a base frame arranged on the outer wall of the purification box, a water source pipe arranged on the upper part of the base frame, a plurality of rotating pipes rotatably connected to and connected with the water source pipe, a drainage pipe arranged on the top of the rotating pipe, a magnetic rotating component arranged on the base frame, and a trigger component arranged outside the drainage pipe. The present invention is a sewage photocatalytic device that can automatically regenerate a photocatalyst layer and allow sewage to preferentially pass through the regenerated photocatalyst area.

Description

Technical Field

[0001] The invention mainly relates to the technical field of sewage treatment, and in particular to a sewage photocatalytic oxidation device. Background Art

[0002] Sulfamethoxazole is a widely used sulfonamide antibiotic, which is widely used in medicine and animal husbandry to prevent and treat bacterial infections. However, since it is difficult to be completely absorbed in animals, it is often excreted in the form of prototype or metabolites through feces and urine, and eventually enters the water environment, causing water pollution. Sulfamethoxazole is potentially toxic to aquatic organisms, and can affect the growth and reproduction of algae, fish and other aquatic organisms, thereby affecting the health and stability of aquatic ecosystems. Sulfamethoxazole is highly persistent in the environment and is not easily degraded naturally, which increases the risk of its accumulation in water bodies and other environments.

[0003] Photocatalytic degradation of sulfamethoxazole is an effective water treatment technology that can use light energy to activate catalysts and produce active free radicals that can degrade organic pollutants. In the process of photocatalytic degradation of sulfamethoxazole, commonly used photocatalysts include TiO2, ZnO, g-C3N4 and their composites. These catalysts can produce active species such as hydroxyl radicals (·OH), superoxide radicals (·O2-) and photogenerated holes (h+) under light conditions. These active species can undergo oxidation reactions with sulfamethoxazole, thereby degrading it into smaller molecules or completely mineralizing it into CO2 and H2O.

[0004] In the process of photocatalyst degradation of sewage, the photocatalyst will be deactivated due to surface adsorption saturation. The deactivated photocatalyst loses its degradation function, so it is necessary to regenerate the deactivated photocatalyst. The regenerated catalyst has better sewage degradation efficiency. Therefore, how to make the sewage pass through the regenerated photocatalyst area first is a problem to be solved. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a photocatalytic oxidation device for sewage to solve the technical problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a photocatalytic oxidation device for sewage, comprising a housing, a plurality of purification boxes arranged in the housing from top to bottom, a water inlet device arranged on one side of the purification box and a drainage device arranged on the other side, the purification box is divided into a plurality of purification chambers by a linear array of partitions, and the bottoms of the plurality of purification chambers are interconnected;

[0007] The drainage device includes a plurality of drainage holes penetrated through the outer wall of the purification box, a water collecting box provided on the outer wall of the purification box and covering the outside of the drainage holes, and a plurality of valve plate components provided on the outer wall of the purification box and used for sealing the drainage holes.

[0008] The plurality of valve plate components correspond one-to-one to the positions of the plurality of drainage holes, and the plurality of drainage holes correspond one-to-one to the positions of the plurality of purification chambers;

[0009] The water inlet device includes a base frame arranged on the outer wall of the purification box, a water source pipe arranged on the upper part of the base frame, a plurality of rotating pipes rotatably connected to the water source pipe and communicating with the water source pipe, a drainage pipe arranged on the top of the rotating pipe, a magnetic rotating component arranged on the base frame and used to drive any number of rotating pipes to rotate, and a trigger component arranged outside the drainage pipe, the plurality of rotating pipes correspond to the plurality of purification chamber positions one by one, and the trigger component is used to trigger the valve plate component to block the drainage hole;

[0010] The drainage device corresponding to the purification box located at the upper part is communicated with the water inlet device corresponding to the adjacent purification box located at the lower part through a pipeline.

[0011] Preferably, a photocatalyst layer is provided on the inner wall of the purification chamber near the water inlet device, and a lamp is provided on the inner wall of the purification chamber away from the water inlet device. In this preferred embodiment, the photocatalytic oxidation degradation of sewage is achieved through the cooperation of the lamp and the photocatalyst layer.

[0012] Preferably, it also includes a regeneration device disposed in the box and located on the upper part of the purification box, the regeneration device includes a positioning component disposed on the top of the inner wall of the box, a vertical plate disposed at the execution end of the positioning component, an oxidant addition pipe and a flushing component disposed on the side wall of the vertical plate in order from top to bottom, a suction pipe disposed at one end of the vertical plate away from the flushing component, and a plurality of blocking components disposed at the bottom of the purification box, and the plurality of blocking components correspond to the plurality of purification chamber positions one by one. In this preferred embodiment, the regeneration device facilitates the regeneration of the photocatalyst layer.

[0013] Preferably, the positioning component includes a first linear module and a slide rail symmetrically arranged at the top of the inner wall of the box, a second linear module with one end connected to the sliding end of the slide rail and the other end connected to the execution end of the first linear module, an n-shaped tooth wall frame arranged at the top of the vertical plate, a track frame arranged at the execution end of the second linear module, a self-locking motor arranged at the top of the track frame, and a driving gear arranged at the execution end of the self-locking motor and meshing with the n-shaped tooth wall frame, and the vertical plate is slidably connected to the track frame. In this preferred embodiment, the positioning component facilitates the positioning of the vertical plate to a specified position for regeneration and cleaning processing.

[0014] Preferably, the flushing component includes a plurality of positioning frames arranged in a linear array from top to bottom on the outer wall of the vertical plate, a plurality of brush rollers rotatably connected to the positioning frames, a nozzle arranged on the outer wall of the vertical plate and located on the upper part of the positioning frame, and a liquid source pipe connected to the nozzle at one end. In this preferred embodiment, the flushing component facilitates brushing away loose objects on the surface after the photocatalyst is deactivated.

[0015] Preferably, the blocking component includes a blocking block slidably connected to the inner wall of the purification box, a connecting hole horizontally penetrated through the outer wall of the blocking block, an air bag disposed at the bottom of the inner wall of the purification box and connected to the bottom of the blocking block at the top, an electric control valve disposed at the bottom of the purification box and connected to the air bag through a pipeline at the output end, and an air source pipe and a pressure relief pipe connected to the input end of the electric control valve through a pipeline. In this preferred embodiment, the blocking component facilitates the blocking of the bottom plate of the purification chamber to facilitate the regeneration of the photocatalyst layer in the purification chamber.

[0016] Preferably, the valve plate component includes two guide rails symmetrically arranged on the outer wall of the purification box with the drainage hole as the axis, a gate plate with two ends slidably connected to the two guide rails, a spring arranged in the guide rail and used to provide a vertical upward support force for the gate plate, and a drain hole penetrated through the gate plate. In this preferred embodiment, the valve plate component is used to facilitate the blocking of the drainage hole.

[0017] Preferably, the magnetic rotating component comprises an electromagnetic ring sleeved on the outer wall of the rotating tube, a linkage rod connecting the outer wall to multiple electromagnetic rings, and a stepper motor disposed on the outer wall of the base frame and having an execution end connected to the linkage rod. In this preferred embodiment, the magnetic rotating component can be used to drive any number of rotating tubes to rotate.

[0018] Preferably, the trigger component includes a lower pressure frame sleeved on the outer wall of the drain pipe, and an electromagnetic block embedded in the top of the purification box and corresponding to the position of the lower pressure frame. In this preferred embodiment, the trigger component is used to squeeze the valve plate component so that the valve plate component blocks the drain hole.

[0019] Preferably, the base frame is provided with a plurality of limiting components, the limiting components comprising a positioning rod provided on the outer wall of the rotating tube, and an L-shaped clamping plate provided on the base frame and used for clamping the positioning rod. In this preferred embodiment, the limiting components facilitate the limiting and fixing of the rotating tube.

[0020] In summary, the present invention mainly has the following beneficial effects:

[0021] The device of the present invention can automatically regenerate the photocatalyst layer and allow the sewage to preferentially pass through the regenerated photocatalyst area;

[0022] The water inlet device facilitates the preferential addition of sewage into the purification chamber after the photocatalyst layer is regenerated, and the drainage device facilitates the sewage to be discharged from the drainage holes of other purification chambers except the purification chamber where the sewage is added;

[0023] In the water inlet device, the magnetic rotating component is used to drive any number of rotating tubes to rotate, the trigger component is used to squeeze the valve plate component so that the valve plate component blocks the drainage hole, and the limiting component is used to limit and fix the rotating tube;

[0024] The light tube and the photocatalyst layer cooperate in the purification chamber to achieve photocatalytic oxidation degradation of sewage.

[0025] The regeneration device facilitates the regeneration of the photocatalyst layer. The sealing component in the regeneration device facilitates the sealing of the bottom plate of the purification chamber to facilitate the regeneration of the photocatalyst layer in the purification chamber. The positioning component facilitates the positioning of the vertical plate to a specified position to facilitate the regeneration and cleaning process. The flushing component facilitates the brushing of loose materials on the surface of the photocatalyst after deactivation. The oxidant addition tube facilitates the addition of the oxidant. The suction tube realizes the removal of waste liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an axonometric diagram of the overall structure of the present invention;

[0027] Figure 2 It is an exploded view of the overall structure of the present invention;

[0028] Figure 3 It is an exploded view of the internal structure of the box of the present invention;

[0029] Figure 4 It is an axonometric view of the purification box structure of the present invention;

[0030] Figure 5 It is an exploded view of the water inlet device structure of the present invention;

[0031] Figure 6 It is an exploded view of the drainage device structure of the present invention;

[0032] Figure 7 It is an exploded view of the regeneration device structure of the present invention;

[0033] Figure 8 It is a cross-sectional view of the water inlet device structure of the present invention;

[0034] Fig. 9 It is a cross-sectional view of the overall structure of the present invention;

[0035] Fig.10 It is an enlarged view of the structure at location A of the present invention.

[0036] Description of the drawings: 10, box; 20, purification box; 21, purification chamber; 211, photocatalyst layer; 212, lamp tube; 30, water inlet device; 31, base frame; 32, water source pipe; 33, rotating pipe; 331, drainage pipe; 34, magnetic rotating component; 341, electromagnetic ring; 342, linkage rod; 343, stepping motor; 35, trigger component; 351, lower pressure frame; 352, electromagnetic block; 36, limit component; 361, positioning rod; 362, L-shaped card plate; 40, drainage device; 41, drainage hole; 42, water collection box; 43, valve plate component; 431, guide rail; 432, gate; 4321 , drain hole; 433, spring; 50, regeneration device; 51, positioning component; 511, first linear module; 512, slide rail; 513, second linear module; 514, n-shaped tooth wall frame; 515, track frame; 516, self-locking motor; 517, driving gear; 52, vertical plate; 53, flushing component; 531, positioning frame; 532, brush roller; 533, nozzle; 534, liquid source pipe; 54, oxidant addition pipe; 55, suction pipe; 56, blocking component; 561, blocking block; 5611, connecting hole; 562, air bag; 563, electric control valve; 564, air source pipe; 565, pressure relief pipe. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] The following describes an embodiment of the present invention based on its overall structure. Example

[0039] Please refer to the attached Figure 1 , 2As shown in Figures 4, 5, and 8, in a preferred embodiment of the present invention, a photocatalytic oxidation device for sewage includes a housing 10, a plurality of purification boxes 20 arranged in sequence in the housing 10 from top to bottom, a water inlet device 30 arranged on one side of the purification box 20, and a drainage device 40 on the other side, the purification box 20 is divided into a plurality of purification chambers 21 by a linear array of partitions, and the bottoms of the plurality of purification chambers 21 are interconnected; the water inlet device 30 includes a base frame 31 arranged on the outer wall of the purification box 20, a water source pipe 32 arranged on the upper part of the base frame 31, a plurality of rotating pipes 33 rotatably connected to the water source pipe 32 and connected to the water source pipe 32, a drainage pipe 331 arranged on the top of the rotating pipe 33, a magnetic rotating component 34 arranged on the base frame 31 and used to drive any number of rotating pipes 33 to rotate, and a trigger component 35 arranged outside the drainage pipe 331, the plurality of rotating pipes 33 correspond to the positions of the plurality of purification chambers 21 one by one, and the trigger component 35 is used to trigger the valve plate component 43 to block the drain hole 41; the inner wall of the purification chamber 21 close to the water inlet device 30 is provided with a photocatalyst layer 211, and the side of the purification chamber 21 away from the water inlet device 30 is provided with a lamp tube 212, and the magnetic rotating component 34 includes an electromagnetic ring 341 sleeved on the outer wall of the rotating tube 33, a linkage rod 342 connected to multiple electromagnetic rings 341 on the outer wall, and a linkage rod 342 provided on the outer wall of the base frame 31 and the execution end is connected to the linkage rod 3 The stepper motor 343 is connected to the rotary tube 33, the trigger component 35 comprises a lower pressure frame 351 which is sleeved on the outer wall of the drain pipe 331, and an electromagnetic block 352 which is embedded in the top of the purification box 20 and corresponds to the position of the lower pressure frame 351. The base frame 31 is provided with a plurality of limiting components 36, and the limiting components 36 comprise a positioning rod 361 which is arranged on the outer wall of the rotating tube 33, and an L-shaped clamping plate 362 which is arranged on the base frame 31 and used to clamp the positioning rod 361.

[0040] It should be noted that, in the present embodiment, during sewage treatment, sewage containing sulfamethoxazole can enter the housing 10 through a pipeline and pass through a plurality of purification boxes 20 in sequence for photocatalytic oxidation purification, and the purified water is discharged from the housing 10 through a water pipe to complete a round of purification. A water storage tank and a circulating pump can be arranged outside the housing 10, and the sewage in the water storage tank continuously enters the housing 10 for purification under the action of the circulating pump, and the purified sewage returns to the water storage tank. After the sewage quality in the water storage tank meets the standard, the sewage can be discharged from the water storage tank to complete the purification work;

[0041] During sewage purification, the sewage enters the purification box 20 through the water inlet device 30, is purified in the purification box 20, and is discharged through the drainage device 40;

[0042] When sewage is initially inflowed, any one of the rotating tubes 33 in the water inlet device 30 rotates and tilts to be in a drainage state, and the sewage is discharged into the purification chamber 21 through the water source pipe 32 and the rotating and tilted rotating tube 33. After the regeneration device 50 regenerates the photocatalyst layer 211 in one of the purification chambers 21, the rotating tube 33 corresponding to the position of the regenerated photocatalyst layer 211 rotates and tilts, and the remaining rotating tubes 33 are in the initial position, and the sewage enters from the purification chamber 21 corresponding to the regenerated photocatalyst layer 211. At this time, the rotating tube 33 presses down the valve plate component 43 through the trigger component 35 to seal the drainage hole 41 of the purification chamber 21 corresponding to the regenerated photocatalyst layer 211. The sewage preferentially enters the purification chamber 21 corresponding to the regenerated photocatalyst layer 211, and fills other purification chambers 21 from the connecting cavity at the bottom of the purification chamber 21 corresponding to the regenerated photocatalyst layer 211, and finally is discharged from the drainage hole 41 of other purification chambers 21;

[0043] Furthermore, when the water inlet device 30 is working, when the rotating tube 33 is in the initial state, the positioning rod 361 at the bottom of the rotating tube 33 is stuck in the L-shaped clamping plate 362 to ensure the stability of the rotating tube 33 in the initial state. When the magnetic rotating component 34 rotates the rotating tube 33, the electromagnetic ring 341 corresponding to the position of the rotating tube 33 to be rotated is electromagnetically attracted to the rotating tube 33. The execution end of the stepper motor 343 drives multiple electromagnetic rings 341 to rotate through the linkage rod 342. The electromagnetic ring 341 magnetically attracted to the rotating tube 33 drives the rotating tube 33 to rotate. As the rotating tube 33 rotates, the lower pressure frame 351 presses down on the valve plate component 43 until the lower pressure frame 351 abuts against the electromagnetic block 352, and the electromagnetic block 352 electromagnetically attracts the lower pressure frame 351.

[0044] Please refer to the attached Figure 2 , 3 , 4, 6, and 9, in another preferred embodiment of the present invention, the drainage device 40 includes a plurality of drainage holes 41 penetrated through the outer wall of the purification box 20, a water collecting box 42 provided on the outer wall of the purification box 20 and covering the outside of the drainage holes 41, and a plurality of valve plate components 43 provided on the outer wall of the purification box 20 and used to seal the drainage holes 41, the plurality of valve plate components 43 correspond one-to-one to the positions of the plurality of drainage holes 41, and the plurality of drainage holes 41 correspond one-to-one to the positions of the plurality of purification chambers 21; The drainage device 40 corresponding to the upper purification box 20 is connected to the water inlet device 30 corresponding to the adjacent and lower purification box 20 through a pipeline, and the valve plate component 43 includes two guide rails 431 symmetrically arranged on the outer wall of the purification box 20 with the drainage hole 41 as the axis, a gate plate 432 slidingly connected to the two guide rails 431 at both ends, a spring 433 arranged in the guide rail 431 and used to provide a vertical upward supporting force for the gate plate 432, and a water discharge hole 4321 penetrating the gate plate 432.

[0045] It should be noted that, in this embodiment, when the drainage device 40 is working, sewage is discharged into the water collecting box 42 through the drainage hole 41, and is discharged from the water collecting box 42 through the pipe connected to the water collecting box 42;

[0046] Furthermore, when the valve plate component 43 is working, the lower pressure frame 351 presses down the gate plate 432, and the drain hole 4321 is misaligned with the drainage hole 41, and the gate plate 432 blocks the drainage hole 41. After the lower pressure frame 351 is reset, the gate plate 432 moves up and resets under the action of the spring 433, and the drainage hole 41 coincides with the drain hole 4321, and drainage can be carried out.

[0047] Please refer to the attached Figure 2 , 3 As shown in Figures 7 and 10, in another preferred embodiment of the present invention, it also includes a regeneration device 50 disposed in the box body 10 and located on the upper part of the purification box 20, and the regeneration device 50 includes a positioning component 51 disposed on the top of the inner wall of the box body 10, a vertical plate 52 disposed at the execution end of the positioning component 51, an oxidant addition pipe 54 and a flushing component 53 disposed on the side wall of the vertical plate 52 in order from top to bottom, a suction pipe 55 disposed at one end of the vertical plate 52 away from the flushing component 53, and a bottom of the purification box 20. The plurality of blocking components 56 of the part correspond to the positions of the plurality of purification chambers 21 one by one, the positioning component 51 comprises a first linear module 511 and a slide rail 512 symmetrically arranged at the top of the inner wall of the box body 10, a second linear module 513 having one end connected to the sliding end of the slide rail 512 and the other end connected to the execution end of the first linear module 511, an n-shaped tooth wall frame 514 arranged at the top of the vertical plate 52, a track frame 515 arranged at the execution end of the second linear module 513, and a The self-locking motor 516 at the top of the track frame 515, and the driving gear 517 arranged at the execution end of the self-locking motor 516 and meshing with the n-shaped tooth wall frame 514, the vertical plate 52 is slidably connected to the track frame 515, and the flushing component 53 includes a plurality of positioning frames 531 arranged on the outer wall of the vertical plate 52 in a linear array from top to bottom, a plurality of brush rollers 532 rotatably connected to the positioning frames 531, a nozzle 533 arranged on the outer wall of the vertical plate 52 and located on the upper part of the positioning frame 531, and one end of the nozzle 533 connected to the vertical plate 52. The liquid source pipe 534 of the nozzle 533, the blocking component 56 includes a blocking block 561 slidably connected to the inner wall of the purification box 20, a connecting hole 5611 horizontally penetrated through the outer wall of the blocking block 561, an air bag 562 arranged at the bottom of the inner wall of the purification box 20 and connected to the bottom of the blocking block 561 at the top, an electric control valve 563 arranged at the bottom of the purification box 20 and connected to the air bag 562 at the output end through a pipeline, and an air source pipe 564 and a pressure relief pipe 565 connected to the input end of the electric control valve 563 through a pipeline.

[0048] It should be noted that, in the present embodiment, when the regeneration device 50 is working, the blocking component 56 first blocks the bottom of the purification chamber 21 to be regenerated. Due to the existence of the connecting hole 5611, the bottoms of the remaining purification chambers 21 that are not blocked are still in a connected state. The positioning component 51 moves the vertical plate 52 to move the vertical plate 52 into the corresponding purification chamber 21 for regeneration. During regeneration, the suction pipe 55 connected to the negative pressure system first sucks out the sewage in the purification chamber 21, and the flushing component 53 scrubs the surface of the photocatalyst layer 211. After scrubbing, the suction pipe 55 sucks out the sewage. The oxidant adding pipe 54 connected to the dosing system adds a set amount of oxidant to the purification chamber 21, and the oxidant regenerates the photocatalyst layer 211. After completion, the suction pipe 55 sucks out the oxidant, and the flushing component 53 scrubs the surface of the photocatalyst layer 211 again. After completion, the suction pipe 55 sucks out the sewage to complete the entire regeneration process.

[0049] Furthermore, when the positioning component 51 is working, the first linear module 511 drives the second linear module 513 to move, the second linear module 513 drives the track frame 515 to move, the self-locking motor 516 drives the n-shaped tooth wall frame 514 to move up and down through the driving gear 517, and the n-shaped tooth wall frame 514 drives the vertical plate 52 to move on the track frame 515;

[0050] Furthermore, when the flushing component 53 is working, the liquid source pipe 534 connected to the water source system supplies water, and the water flows through the nozzle 533 and then flushes the surface of the photocatalyst layer 211. At the same time, the water flow drives the brush roller 532 to rotate, and the brush roller 532 brushes the surface of the photocatalyst layer 211.

[0051] Furthermore, when the blocking component 56 is working, when the blocking block 561 moves upward, the air supply system connected to the air source pipe 564 inputs pressurized gas into the air source pipe 564, and the pressurized gas enters the air bag 562 through the electric control valve 563, and the air bag 562 pushes the blocking block 561 to move upward. When the blocking block 561 descends, the electric control valve 563 switches to connect the air bag 562 with the pressure relief pipe 565, and the pressurized gas is discharged through the pressure relief pipe 565, the air bag 562 automatically shrinks, and the blocking block 561 descends.

[0052] The working principle of the present invention is:

[0053] The devices in the present invention are all triggered to run by a PLC controller;

[0054] During sewage treatment, sewage containing sulfamethoxazole can enter the housing 10 through a pipeline and pass through a plurality of purification boxes 20 in sequence for photocatalytic oxidation purification. The purified water is discharged from the housing 10 through a water pipe to complete a round of purification. A water storage tank and a circulating pump can be arranged outside the housing 10. The sewage in the water storage tank continuously enters the housing 10 for purification under the action of the circulating pump. The purified sewage returns to the water storage tank. After the sewage in the water storage tank meets the water quality standard, the sewage can be discharged from the water storage tank to complete the purification work.

[0055] During sewage purification, the sewage enters the purification box 20 through the water inlet device 30, is purified in the purification box 20, and is discharged through the drainage device 40;

[0056] When sewage is initially inflowed, any one of the rotating tubes 33 in the water inlet device 30 rotates and tilts to be in a drainage state, and the sewage is discharged into the purification chamber 21 through the water source pipe 32 and the rotating and tilted rotating tube 33. After the regeneration device 50 regenerates the photocatalyst layer 211 in one of the purification chambers 21, the rotating tube 33 corresponding to the position of the regenerated photocatalyst layer 211 rotates and tilts, and the remaining rotating tubes 33 are in the initial position, and the sewage enters from the purification chamber 21 corresponding to the regenerated photocatalyst layer 211. At this time, the rotating tube 33 presses down the valve plate component 43 through the trigger component 35 to seal the drainage hole 41 of the purification chamber 21 corresponding to the regenerated photocatalyst layer 211. The sewage preferentially enters the purification chamber 21 corresponding to the regenerated photocatalyst layer 211, and fills other purification chambers 21 from the connecting cavity at the bottom of the purification chamber 21 corresponding to the regenerated photocatalyst layer 211, and finally is discharged from the drainage hole 41 of other purification chambers 21;

[0057] When the water inlet device 30 is working, when the rotating tube 33 is in the initial state, the positioning rod 361 at the bottom of the rotating tube 33 is stuck in the L-shaped clamping plate 362 to ensure the stability of the rotating tube 33 in the initial state. When the magnetic rotating component 34 rotates the rotating tube 33, the electromagnetic ring 341 corresponding to the position of the rotating tube 33 to be rotated is electromagnetically attracted to the rotating tube 33, and the execution end of the stepping motor 343 drives the multiple electromagnetic rings 341 to rotate through the linkage rod 342. The electromagnetic ring 341 magnetically attracted to the rotating tube 33 drives the rotating tube 33 to rotate. As the rotating tube 33 rotates, the lower pressure frame 351 presses down the valve plate component 43 until the lower pressure frame 351 abuts against the electromagnetic block 352, and the electromagnetic block 352 is electromagnetically attracted to the lower pressure frame 351;

[0058] When the drainage device 40 is working, sewage is discharged into the water collecting box 42 through the drainage hole 41, and is discharged from the water collecting box 42 through the pipe connected to the water collecting box 42;

[0059] When the valve plate component 43 is working, the lower pressing frame 351 presses down the gate plate 432, and the drain hole 4321 is misaligned with the drain hole 41, and the gate plate 432 blocks the drain hole 41. After the lower pressing frame 351 is reset, the gate plate 432 moves up and resets under the action of the spring 433, and the drain hole 41 overlaps with the drain hole 4321, and the drainage work can be carried out;

[0060] When the regeneration device 50 is working, the blocking component 56 first blocks the bottom of the purification chamber 21 to be regenerated. Due to the existence of the connecting hole 5611, the bottoms of the remaining purification chambers 21 that are not blocked are still in a connected state. The positioning component 51 moves the vertical plate 52 to move the vertical plate 52 into the corresponding purification chamber 21 for regeneration. During regeneration, the suction pipe 55 connected to the negative pressure system first sucks out the sewage in the purification chamber 21, and the flushing component 53 scrubs the surface of the photocatalyst layer 211. After scrubbing, the suction pipe 55 sucks out the sewage. The oxidant adding pipe 54 connected to the dosing system adds a set amount of oxidant to the purification chamber 21, and the oxidant regenerates the photocatalyst layer 211. After completion, the suction pipe 55 sucks out the oxidant, and the flushing component 53 scrubs the surface of the photocatalyst layer 211 again. After completion, the suction pipe 55 sucks out the sewage to complete the entire regeneration process.

[0061] When the positioning component 51 is working, the first linear module 511 drives the second linear module 513 to move, the second linear module 513 drives the track frame 515 to move, the self-locking motor 516 drives the n-shaped tooth wall frame 514 to move up and down through the driving gear 517, and the n-shaped tooth wall frame 514 drives the vertical plate 52 to move on the track frame 515;

[0062] When the flushing component 53 is working, the liquid source pipe 534 connected to the water source system supplies water, and the water flows through the nozzle 533 to flush the surface of the photocatalyst layer 211. At the same time, the water flow drives the brush roller 532 to rotate, and the brush roller 532 brushes the surface of the photocatalyst layer 211.

[0063] When the blocking component 56 is working, when the blocking block 561 moves up, the air supply system connected to the air source pipe 564 inputs pressurized gas into the air source pipe 564, and the pressurized gas enters the air bag 562 through the electric control valve 563, and the air bag 562 pushes the blocking block 561 to move up. When the blocking block 561 descends, the electric control valve 563 switches to connect the air bag 562 with the pressure relief pipe 565, and the pressurized gas is discharged through the pressure relief pipe 565, the air bag 562 automatically shrinks, and the blocking block 561 descends.

[0064] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A sewage photocatalytic oxidation device, comprising a housing (10), a plurality of purification boxes (20) arranged in order from top to bottom in the housing (10), a water inlet device (30) arranged on one side of the purification box (20), and a drainage device (40) arranged on the other side of the purification box (20), characterized in that: The purification box (20) is divided into a plurality of purification chambers (21) by a linear array of partitions, and the bottoms of the plurality of purification chambers (21) are interconnected; The drainage device (40) comprises a plurality of drainage holes (41) formed through the outer wall of the purification box (20), a water collecting box (42) formed on the outer wall of the purification box (20) and covering the outside of the drainage holes (41), and a plurality of valve plate components (43) formed on the outer wall of the purification box (20) and used for sealing the drainage holes (41). The plurality of valve plate components (43) correspond to the plurality of drainage holes (41) in one-to-one position, and the plurality of drainage holes (41) correspond to the plurality of purification chambers (21) in one-to-one position; The water inlet device (30) comprises a base frame (31) arranged on the outer wall of the purification box (20), a water source pipe (32) arranged on the upper part of the base frame (31), a plurality of rotating pipes (33) rotatably connected to the water source pipe (32) and communicating with the water source pipe (32), a drainage pipe (331) arranged on the top of the rotating pipe (33), a magnetic rotating component (34) arranged on the base frame (31) and used to drive any number of rotating pipes (33) to rotate, and a trigger component (35) arranged outside the drainage pipe (331), the plurality of rotating pipes (33) corresponding to the positions of the plurality of purification chambers (21) one by one, and the trigger component (35) is used to trigger the valve plate component (43) to block the drainage hole (41); The drainage device (40) corresponding to the purification box (20) located at the upper part is connected to the water inlet device (30) corresponding to the adjacent purification box (20) located at the lower part through a pipeline, and also includes a regeneration device (50) arranged in the box body (10) and located at the upper part of the purification box (20). When sewage is initially inflowed, any one of the rotating pipes (33) in the water inlet device (30) rotates and tilts to be in a drainage state, and the sewage is discharged into the purification chamber (21) through the water source pipe (32) and the rotating and tilted rotating pipe (33). When the regeneration device (50) regenerates the photocatalyst layer (211) in one of the purification chambers (21), the regeneration device (50) is connected to the regenerated photocatalyst layer (211). The rotating tube (33) corresponding to the regenerated photocatalyst layer (211) is rotated and tilted, and the other rotating tubes (33) are in the initial position. The sewage enters the purification chamber (21) corresponding to the regenerated photocatalyst layer (211). At this time, the rotating tube (33) presses down the valve plate component (43) through the trigger component (35) to seal the drainage hole (41) of the purification chamber (21) corresponding to the regenerated photocatalyst layer (211). The sewage preferentially enters the purification chamber (21) corresponding to the regenerated photocatalyst layer (211), and fills the other purification chambers (21) from the connecting chamber at the bottom of the purification chamber (21) corresponding to the regenerated photocatalyst layer (211), and finally is discharged from the drainage hole (41) of the other purification chambers (21).

2. A sewage photocatalytic oxidation device according to claim 1, characterized in that: A photocatalyst layer (211) is provided on the inner wall of a side of the purification chamber (21) close to the water inlet device (30), and a lamp tube (212) is provided on a side of the purification chamber (21) away from the water inlet device (30).

3. The photocatalytic oxidation device for sewage according to claim 1, characterized in that: The regeneration device (50) comprises a positioning component (51) arranged at the top of the inner wall of the box body (10), a vertical plate (52) arranged at the execution end of the positioning component (51), an oxidant addition pipe (54) and a flushing component (53) arranged on the side wall of the vertical plate (52) in order from top to bottom, a suction pipe (55) arranged at the end of the vertical plate (52) away from the flushing component (53), and a plurality of blocking components (56) arranged at the bottom of the purification box (20), wherein the plurality of blocking components (56) correspond one-to-one to the positions of the plurality of purification chambers (21).

4. A sewage photocatalytic oxidation device according to claim 3, characterized in that: The positioning component (51) comprises a first linear module (511) and a slide rail (512) symmetrically arranged at the top of the inner wall of the box body (10), a second linear module (513) having one end connected to the sliding end of the slide rail (512) and the other end connected to the execution end of the first linear module (511), an n-shaped tooth wall frame (514) arranged at the top of the vertical plate (52), a track frame (515) arranged at the execution end of the second linear module (513), a self-locking motor (516) arranged at the top of the track frame (515), and a driving gear (517) arranged at the execution end of the self-locking motor (516) and meshing with the n-shaped tooth wall frame (514), and the vertical plate (52) is slidably connected to the track frame (515).

5. The photocatalytic oxidation device for sewage according to claim 3, characterized in that: The flushing component (53) comprises a plurality of positioning frames (531) arranged in a linear array from top to bottom on the outer wall of the vertical plate (52), a plurality of brush rollers (532) rotatably connected to the positioning frames (531), a nozzle (533) arranged on the outer wall of the vertical plate (52) and located above the positioning frame (531), and a liquid source pipe (534) having one end connected to the nozzle (533).

6. The photocatalytic oxidation device for sewage according to claim 3, characterized in that: The blocking component (56) comprises a blocking block (561) slidably connected to the inner wall of the purification box (20), a connecting hole (5611) horizontally penetrated through the outer wall of the blocking block (561), an air bag (562) arranged at the bottom of the inner wall of the purification box (20) and connected to the bottom of the blocking block (561) at the top, an electric control valve (563) arranged at the bottom of the purification box (20) and connected to the air bag (562) at the output end through a pipeline, and an air source pipe (564) and a pressure relief pipe (565) connected to the input end of the electric control valve (563) through a pipeline.

7. The photocatalytic oxidation device for sewage according to claim 1, characterized in that: The valve plate component (43) comprises two guide rails (431) symmetrically arranged on the outer wall of the purification box (20) with the drainage hole (41) as the axis, a gate plate (432) slidably connected to the two guide rails (431) at both ends, a spring (433) arranged in the guide rails (431) and used to provide a vertical upward supporting force for the gate plate (432), and a drainage hole (4321) penetrating the gate plate (432).

8. The sewage photocatalytic oxidation device according to claim 1, characterized in that: The magnetic rotating component (34) comprises an electromagnetic ring (341) sleeved on the outer wall of the rotating tube (33), a linkage rod (342) connected to the outer wall of a plurality of electromagnetic rings (341), and a stepping motor (343) arranged on the outer wall of the base frame (31) and having an execution end connected to the linkage rod (342).

9. The device for photocatalytic oxidation of sewage according to claim 1, characterized in that: The trigger component (35) comprises a lower pressure frame (351) sleeved on the outer wall of the drain pipe (331), and an electromagnetic block (352) embedded in the top of the purification box (20) and corresponding to the position of the lower pressure frame (351).

10. The sewage photocatalytic oxidation device according to claim 1, characterized in that: The base frame (31) is provided with a plurality of limiting components (36), and the limiting components (36) include a positioning rod (361) provided on the outer wall of the rotating tube (33), and an L-shaped clamping plate (362) provided on the base frame (31) and used to clamp the positioning rod (361).

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