A sewage treatment sterilization device

Abstract

The present invention provides a sewage treatment and sterilization device, which includes a sewage inlet pipe, a chlorination disinfection device connected to a sodium hypochlorite storage tank, and an ultraviolet disinfection component. The liquid outlet of the sewage inlet pipe is fixedly connected to the liquid inlet of the chlorination disinfection device. The ultraviolet disinfection component is installed at the liquid inlet end of the sewage inlet pipe. The ultraviolet disinfection component includes an ultraviolet lamp and a rotating device installed on the sewage inlet pipe. A plurality of ultraviolet lamps are provided and installed at the rotating end of the rotating device. After adopting such a scheme, the emergency situation of the damage of the ultraviolet lamp is emergently handled by rotating the ultraviolet lamp, providing more time for maintenance personnel. In addition, the replacement method of the ultraviolet lamp of this device is simple and fast, the chlorination disinfection efficiency is high, and the dosage of sodium hypochlorite can be controlled according to the actual situation to ensure accurate dosing and uniform distribution, improving the disinfection effect.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment devices, and particularly relates to a sewage treatment sterilization device. Background Art

[0002] In the process of sewage treatment, ultraviolet disinfection and chlorination disinfection usually belong to the part of post-treatment (or called tertiary treatment). However, it is found in actual treatment that after sewage treatment, there is a problem that the effluent index (fecal coliform) is likely to exceed the standard. After analysis, the following reasons are found: the light of the ultraviolet disinfection lamp will become weak after long-term operation, and the dirt in the sewage may also adhere to the ultraviolet disinfection lamp, which will lead to poor ultraviolet disinfection effect; for the sodium hypochlorite chemical disinfection process, this process generally follows the ultraviolet disinfection, because some chlorides have a certain absorption effect on ultraviolet rays, thus affecting the effect of ultraviolet disinfection, and the residual chlorine can provide a certain continuous disinfection effect, which helps to prevent the water from being re-polluted during transportation; however, sodium hypochlorite needs to be added in an appropriate amount. If it is excessive, the residual chlorine value will exceed the standard, and if the dosage is insufficient, the disinfection effect is not good, and the fecal coliform will exceed the standard.

[0003] The existing post-treatment sterilization of sewage often installs ultraviolet lamp tubes inside or on the outer wall of the sewage pipeline for sterilization. For example, a Chinese invention patent with the patent number 2023114457810 discloses a sewage disinfection device, which fixedly installs a serpentine coil between ultraviolet lamp plates, and then allows the filtered sewage to enter the serpentine coil. The serpentine coil is made of transparent glass material, so that it can receive the irradiation of ultraviolet lamp plates from two directions to achieve the purpose of sterilization. These sewage sterilized by ultraviolet rays can be further processed, such as disinfected with sodium hypochlorite.

[0004] Therefore, it can be found that in the existing sewage post-treatment process, the ultraviolet sterilization process is one of the keys to sewage sterilization. If the ultraviolet lamp fails, the dosage of sodium hypochlorite actually needs to be increased timely; however, due to the strict control of the use of sodium hypochlorite, its excessive use is likely to produce harmful and toxic substances. Therefore, the primary thing is to quickly eliminate the failure of the ultraviolet lamp. Summary of the Invention

[0005] The invention provides a sewage treatment sterilization device, which can rotate the ultraviolet lamp to emergently handle the emergency of ultraviolet lamp damage, providing more time for maintenance personnel. In addition, the ultraviolet lamp of this device can be replaced simply and quickly, the chlorination disinfection efficiency is high, the dosage of sodium hypochlorite can be controlled according to the actual situation to ensure accurate dosing and uniform distribution, and improve the disinfection effect. At the same time, the rotating device can also remove the dirt and biofilm on the lamp tube surface, reducing the cleaning and maintenance frequency.

[0006] To solve the above technical problems, the technical solution of the present invention is as follows:

[0007] A sewage treatment sterilization device includes a sewage inlet pipe, a chlorination disinfection device connected to a sodium hypochlorite storage tank, and an ultraviolet disinfection component. The liquid outlet of the sewage inlet pipe is fixedly connected to the liquid inlet of the chlorination disinfection device. The ultraviolet disinfection component is installed at the liquid inlet end of the sewage inlet pipe. The ultraviolet disinfection component includes an ultraviolet lamp and a rotating device installed on the sewage inlet pipe. A plurality of ultraviolet lamps are provided and installed at the rotating end of the rotating device.

[0008] After such a design, during the period when the ultraviolet lamp is damaged and the maintenance personnel come to repair, the rotating device will drive all the ultraviolet lamps to rotate. The rotating lamp tubes can make the ultraviolet irradiation more uniform, reduce the irradiation dead angle. Thus, even if a lamp tube is damaged, other lamp tubes can cover the area originally responsible for by the damaged lamp tube during the rotation process, and more time is provided for the maintenance personnel. In addition, during daily operation, the accumulated dirt and biofilm on the surface of the lamp tubes can be removed by means of the action of water flow and in cooperation with the movement of the lamp tubes, thereby reducing the frequency of cleaning and maintenance requirements, and also ensuring the ultraviolet irradiation intensity to the greatest extent.

[0009] Preferably, the rotating device includes a rotating driver, a guide rod, a first rotating part fixedly connected to the working end of the rotating driver, and a second rotating part located below the first rotating part. The second rotating part is rotatably connected to both the inner and outer walls of the sewage inlet pipe. The second rotating part is fixedly connected to the lower end of the guide rod. The first rotating part is slidably matched with the upper end of the guide rod. The ultraviolet lamp is slidably connected to the first rotating part and the second rotating part. The lower end of the ultraviolet lamp extends to be close to the lower inner wall of the sewage inlet pipe. In this way, the movement of the rotating device at the sewage inlet pipe can be made more flexible, and it can better drive the movement of the ultraviolet lamp. When the rotating driver drives the first rotating part to rotate, the guide rod can drive the second rotating part to rotate together, so as to realize the rotation of the ultraviolet lamp together. When the first rotating part slides along the guide rod, the second rotating part is still connected to the inner and outer walls of the sewage inlet pipe. And the ultraviolet lamp is slidably connected to the rotating device, making the replacement and maintenance of the lamp tube more convenient, reducing the maintenance cost and downtime. Among them, the rotating driver can be a common motor drive system on the market, so it will not be elaborated too much in the present invention.

[0010] Preferably, a lamp replacement assembly is further included. The lamp replacement assembly includes a lifting device and a support portion. The rotary driver is mounted on the support portion, and the support portion is mounted on the driving end of the lifting device. The support portion is located above the sewage inlet pipe and outside the vertical movement path of the ultraviolet lamp. In this way, the rotary device can move up and down under the drive of the lifting device, facilitating the maintenance and replacement of the ultraviolet lamp tube. Since the lower end of the ultraviolet lamp tube is close to the inner wall of the lower part of the sewage inlet pipe, during maintenance, only the lifting device needs to be operated to lower the rotary driver. At the same time, the first rotary portion will also descend together, resulting in the lamp tube moving downward accordingly until the lower end of the lamp tube touches the inner wall of the sewage inlet pipe. Subsequently, by continuing to lower the rotary device, the lamp tube will be gently pushed out of the rotary device by the inner wall of the sewage inlet pipe. This design enables maintenance personnel to easily remove the ultraviolet lamp tube, significantly simplifies the maintenance steps, reduces the equipment downtime, improves the processing efficiency, and is also very suitable for scenarios where a large area of ultraviolet lamps need to be replaced. At the same time, this replacement method avoids maintenance personnel directly contacting the sewage, enhancing the safety of maintenance operations. It is worth mentioning that the first rotary portion moves along the guide rod. Therefore, during the up and down movement of the rotary driver, the second rotary portion will not move up and down accordingly but will always be in a state of being connected to the sewage inlet pipe, effectively preventing the sewage in the sewage inlet pipe from overflowing.

[0011] Among them, the lifting device can be a common cylinder or motor drive system on the market, so it will not be elaborated too much in the present invention.

[0012] Among them, the lamp replacement assembly further includes a locking portion. The locking portion is mounted on the first rotary portion. Locking engagement portions are mounted on both the ultraviolet lamp and the first rotary portion, and the locking portion can cooperate with the locking engagement portions. The locking portion can ensure that the ultraviolet lamp tube is stably fixed on the rotary device when the ultraviolet lamp does not need to be replaced or maintained, preventing it from loosening or falling off due to vibration or other external factors, thereby improving the safety of the entire system. Moreover, through the stable fixation of the locking portion, the position of the ultraviolet lamp is guaranteed to remain unchanged during normal operation, contributing to maintaining a uniform ultraviolet irradiation effect and reducing the uneven disinfection phenomenon caused by the change in the position of the lamp tube, thereby enhancing the reliability and disinfection efficiency of the system. It should be noted that when the ultraviolet lamp needs to be replaced, the locking portion can be automatically unlocked through the control system so that the lamp tube can be smoothly pushed out of the first rotary portion and the second rotary portion of the rotary device. Among them, the locking portion and the locking engagement portions can adopt common plug-in electric locks on the market, so they will not be elaborated too much in the present invention.

[0013] Preferably, it further includes photoelectric sensors. A plurality of photoelectric sensors are provided and installed on the second rotating part, and the plurality of photoelectric sensors correspond to the plurality of ultraviolet lamps one by one. The photoelectric sensors can detect the on / off state of the ultraviolet lamps. Once a certain lamp tube fails or goes out, a signal can be immediately sent out, which is convenient for timely replacement or repair. The one-to-one correspondence between the plurality of photoelectric sensors and the ultraviolet lamps can monitor the working state of each ultraviolet lamp in real time. When a fault of the ultraviolet lamp is detected, the fault signal sent by the photoelectric sensor can immediately trigger the emergency system. The emergency system can make the rotating device drive all the ultraviolet lamps to rotate to complete the emergency work, so as to gain more time for maintenance personnel and minimize the impact of the ultraviolet lamp failure on the sewage ultraviolet sterilization effect. It should be noted that the photoelectric sensors, residual chlorine sensors and other devices mentioned in the present invention will all be connected to the general controller to achieve the adjustment and control of each device, pump and valve.

[0014] Preferably, it further includes a plurality of ejecting devices. The ejecting devices are installed on the first rotating part, and the ejecting ends of the ejecting devices are fixedly connected to the upper ends of the ultraviolet lamps. The plurality of ejecting devices correspond to the plurality of ultraviolet lamps one by one, and the ejecting devices are electrically connected to the photoelectric sensors. The one-to-one correspondence between the ejecting devices and the ultraviolet lamps can accurately eject the faulty lamp tube when the photoelectric sensor detects that a specific lamp tube is damaged, so as to quickly locate the lamp tube that needs to be replaced and save the time for finding the fault source. Through the precise operation of the ejecting devices, the maintenance personnel can directly replace the faulty lamp tube without checking all the lamp tubes one by one, which greatly improves the efficiency of the maintenance work and shortens the downtime of the disinfection device, and is suitable for the daily simple maintenance work scenario.

[0015] Preferably, it further includes a lamp tube rebounding device. A plurality of the lamp tube rebounding devices are provided and located directly below the ultraviolet lamp. The lamp tube rebounding device includes a support seat, a rebounding part, a guide post, and an elastic element, where the support seat is installed on the lower inner wall of the sewage inlet pipe. The rebounding part is slidably fitted to the upper end of the support seat. The guide post is installed at the lower end of the support seat, and a guide groove is provided on the guide post. The rebounding part is slidably fitted with the guide groove. The elastic element is fixedly arranged between the lower end of the rebounding part and the support seat. Specifically, in the normal working state, the ultraviolet lamp is not in contact with the lamp tube rebounding device, and the lamp tube rebounding device is located below the ultraviolet lamp. A buffer material, such as a rubber pad, can be installed on the top of the rebounding part to prevent the lamp tube from cracking or being scratched on the surface when contacting the lamp tube, and reduce the damage to the lamp tube caused by daily maintenance. In this way, when changing the lamp, the ultraviolet lamp descends, and the lower end of the lamp tube will contact the rebounding part. Since a part of the lamp tube and the rotating device will work in a sewage environment, dirt and biofilms that are not completely treated in the sewage may be adsorbed at their connection, resulting in the situation where the lamp tube is stuck in the rotating device. Therefore, when the lamp tube presses down the rebounding part, the elastic member will be compressed accordingly, gradually giving the lamp tube an upward thrust, enabling the lamp tube to gradually overcome friction and obstacles, and then completing the action of disengaging from the rotating part, reducing the impact on the lamp tube caused by sudden shock. Among them, the design of the guide groove ensures that the lamp tube can move along the correct direction during the ejection process, avoiding skewing or deviation. The locking part can be unlocked when the lamp tube starts to press down. If the lamp tube is not stuck, the rebounding part can eject the lamp tube without being compressed. However, it can also be unlocked after the lamp tube presses down a certain distance. In this way, when the lamp tube does encounter relatively large friction or obstacles, the elastic element can accumulate more elastic potential energy, thereby providing a stronger thrust to help the lamp tube overcome these obstacles.

[0016] Preferably, the guide post is rotatably connected to the support, an elastic pin is fixedly arranged on the spring-back part, the elastic pin is slidably matched with the guide groove, the guide groove includes an inclined part and a vertical part, the upper end of the inclined part is communicated with the upper end of the vertical part and deeper than the upper end of the vertical part, the lower end of the vertical part is communicated with the lower end of the inclined part and deeper than the lower end of the inclined part, a groove is arranged at the upper end of the inclined part, and the elastic pin can be clamped with the groove. This structure further optimizes the lamp tube spring-back device, and its working principle is as follows: the elastic pin fixed on the spring-back part will move along the guide groove. When the spring-back part is pressed down by the lamp tube, the elastic pin will move in the inclined part to realize the pressing down of the spring-back part, and at the same time, the elastic member stores elastic potential energy. At this time, the guide post will rotate accordingly so that the elastic pin can move downward smoothly; when the elastic pin moves to the vertical part, the locking part is unlocked, and the elastic member will release the elastic potential energy to make the spring-back part move upward, so as to realize the action of ejecting the lamp tube out of the rotating device. After replacing the lamp tube, use the locking part to lock the new lamp tube, then the lifting device presses down the lamp tube to make it contact the spring-back part, and presses the elastic pin of the spring-back part into the groove, and then lifts the lamp tube to separate the lamp tube from the spring-back part. Among them, the design of the groove can prevent the spring-back part from springing back by itself under unexpected circumstances, increasing the safety of the system; only when the lamp tube really needs to be replaced and enough pressure is applied, the elastic pin will be disengaged from the groove, so that the spring-back part begins to enter the compression and spring-back action. Of course, the locking part can also be unlocked when the old lamp tube is pressed down at the beginning, so that the unjammed lamp tube can be directly ejected out of the rotating device by the spring-back part.

[0017] It should be noted that the upper end of the inclined part is communicated with the upper end of the vertical part and deeper than the upper end of the vertical part, and the lower end of the vertical part is communicated with the lower end of the inclined part and deeper than the lower end of the inclined part, so that the elastic pin can only move in a predetermined direction and cannot move in the reverse direction, ensuring the stability of the operation of the lamp tube spring-back device.

[0018] Preferably, the chlorination disinfection device includes a spraying device, a reaction tank, and a residual chlorine sensor. The liquid inlet of the reaction tank is fixedly connected to the liquid outlet of the sewage inlet pipe. The spraying device is installed in the reaction tank and one end is communicated with the sodium hypochlorite storage tank. A channel for the flow of sodium hypochlorite is provided in the spraying device. A plurality of spray heads are installed at intervals from top to bottom in the spraying device. A first one-way valve is installed in the spray head. The residual chlorine sensor is fixedly installed in the reaction tank and is electrically connected to the spraying device. A second one-way valve, a pressure regulating valve, and a metering pump are sequentially installed between the spraying device and the sodium hypochlorite storage tank. The residual chlorine sensor is electrically connected to both the metering pump and the pressure regulating valve. In this way, the residual chlorine sensor can monitor the residual chlorine concentration in the reaction tank in real time, and according to the monitoring results of the residual chlorine concentration in the sewage, the control system can automatically adjust the spraying amount of sodium hypochlorite to maintain the best disinfection effect. It is worth mentioning that the spray heads installed at intervals from top to bottom can effectively adjust the spraying amount of sodium hypochlorite. When a small amount of sodium hypochlorite is required, the height of the sodium hypochlorite solution supplied from the sodium hypochlorite storage tank to the spraying device can only reach the lower spray head, so only the lower spray head will spray sodium hypochlorite; when more sodium hypochlorite is required, the height of the sodium hypochlorite solution provided by the sodium hypochlorite storage tank can reach the upper spray head, so that sodium hypochlorite can be sprayed from both the upper and lower spray heads at the same time. Among them, the first one-way valve can prevent the sewage and sodium hypochlorite from flowing back into the spraying device and ensure the stability of the system operation.

[0019] The metering pump can accurately control the dosing amount of sodium hypochlorite to ensure that the dose of each addition is accurate. Through the real-time monitoring of the residual chlorine sensor, the system can automatically adjust the working parameters of the metering pump according to actual needs to achieve precise dosing. The pressure regulating valve can stabilize the pressure of the sodium hypochlorite solution to ensure that the spraying device can obtain stable flow and pressure under different working conditions, which helps to improve the uniformity and stability of spraying. Through the coordinated action of the metering pump and the pressure regulating valve, the height of the sodium hypochlorite solution supplied from the sodium hypochlorite storage tank to the spraying device can be regulated, so as to control the spraying of sodium hypochlorite from the spray heads at different positions and improve the disinfection accuracy of the chlorination disinfection device. The second one-way valve can also be used to further prevent the sodium hypochlorite solution from flowing back.

[0020] In fact, since the photoelectric sensor, the residual chlorine sensor, and other devices are all connected to the total controller, when the ultraviolet disinfection component fails, the system can appropriately regulate and increase the dosing amount of sodium hypochlorite according to the situation to temporarily make up for the defect of the weakened ultraviolet sterilization effect. This emergency treatment mechanism buys more time for the maintenance personnel to carry out maintenance.

[0021] Preferably, it also includes a stirring part, the stirring part includes a rotary joint and a stirring blade, the rotating end of the rotary joint is fixedly connected to the liquid inlet end of the spraying device, and the stirring blade is fixedly mounted on the spraying device and is located in the reaction tank together with the spraying device. The rotary joint can be driven by a driving device. In this way, through the rotary joint, the spraying device can rotate during the spraying of sodium hypochlorite, so that the sodium hypochlorite is sprayed more evenly, and the presence of the stirring blade further promotes the full mixing of sodium hypochlorite and sewage, improves the disinfection effect, and reduces the waste of chemicals caused by uneven mixing.

[0022] In summary, such a sewage treatment sterilization device can deal with emergency situations of UV lamp damage by rotating the UV lamp, providing more time for maintenance personnel. In addition, the UV lamp replacement method of this device is simple and fast, the chlorination disinfection efficiency is high, and the amount of sodium hypochlorite can be controlled according to actual conditions to ensure accurate addition and uniform distribution, thereby improving the disinfection effect. At the same time, the rotating device can also remove dirt and biofilm on the surface of the lamp tube, reducing the frequency of cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 This is a schematic structural diagram of the sewage treatment sterilization device of the present invention (1);

[0025] Figure 2 This is a schematic structural diagram of the sewage treatment sterilization device of the present invention (2);

[0026] Figure 3 It is a schematic diagram of the connection structure between the ejection device and the rotating device in the sewage treatment sterilization device of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the spraying device in the sewage treatment sterilization device of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the lamp tube rebound device in the sewage treatment sterilization device of the present invention;

[0029] Figure 6 It is a schematic diagram of the planar structure of the guide groove in the sewage treatment sterilization device of the present invention.

[0030] In the figure,

[0031] 1 - Sewage inlet pipe;

[0032] 2 - Chlorination disinfection device; 21 - Spraying device; 211 - Nozzle; 212 - First one - way valve; 22 - Reaction tank; 23 - Residual chlorine sensor; 24 - Stirring part; 241 - Rotary joint; 242 - Stirring blade; 25 - Second one - way valve; 26 - Pressure regulating valve; 27 - Metering pump;

[0033] 3 - UV disinfection component; 31 - UV lamp; 32 - Rotating device; 321 - Guide rod; 322 - First rotating part; 323 - Second rotating part;

[0034] 4 - Lamp replacement component; 41 - Lifting device; 42 - Support part; 43 - Locking part;

[0035] 5 - Photoelectric sensor;

[0036] 6 - Ejecting device;

[0037] 7 - Lamp tube rebounding device; 71 - Rebounding part; 711 - Elastic pin; 72 - Guide post; 721 - Guide groove; 7211 - Tilted part; 7212 - Vertical part; 7213 - Groove; 73 - Elastic element;

[0038] 8 - Third one - way valve. Detailed implementation manners

[0039] The following further explains the detailed implementation manners of the present invention with reference to the accompanying drawings. It should be noted here that the description of these implementation manners is for helping to understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the following various implementation manners of the present invention can be combined with each other as long as they do not conflict with each other.

[0040] A sewage treatment and sterilization device includes a sewage inlet pipe 1, a chlorination disinfection device 2 connected to a sodium hypochlorite storage tank, and a UV disinfection component 3. The outlet of the sewage inlet pipe 1 is fixedly connected to the inlet of the chlorination disinfection device 2. The UV disinfection component 3 is installed at the inlet end of the sewage inlet pipe 1. The UV disinfection component 3 includes a UV lamp 31 and a rotating device 32 installed on the sewage inlet pipe 1. A plurality of UV lamps 31 are provided and installed at the rotating end of the rotating device 32.

[0041] After such a design, during the period when the ultraviolet lamp 31 is damaged and before the maintenance personnel arrive for repair, the rotating device 32 will drive all the ultraviolet lamps 31 to rotate. The rotating lamp tubes can make the ultraviolet irradiation more uniform, reduce the irradiation dead angle. Thus, even if a lamp tube is damaged, other lamp tubes can cover the area originally responsible for by the damaged lamp tube during the rotation process, and more time is provided for the maintenance personnel. In addition, during daily operation, the accumulated dirt and biofilm on the surface of the lamp tubes can be removed by means of the action of water flow and in cooperation with the movement of the lamp tubes, thereby reducing the frequency of cleaning and maintenance requirements and ensuring the irradiation light intensity of ultraviolet rays to the greatest extent.

[0042] In addition, the rotating device 32 includes a rotating driver, a guide rod 321, a first rotating part 322 fixedly connected to the working end of the rotating driver, and a second rotating part 323 located below the first rotating part 322. The second rotating part 323 is rotatably connected to both the inner and outer walls of the sewage inlet pipe 1. The second rotating part 323 is fixedly connected to the lower end of the guide rod 321. The first rotating part 322 is slidably engaged with the upper end of the guide rod 321. The ultraviolet lamp 31 is slidably connected to the first rotating part 322 and the second rotating part 323, and the lower end of the ultraviolet lamp 31 extends to a position close to the lower inner wall of the sewage inlet pipe 1. In this way, the movement of the rotating device 32 at the sewage inlet pipe 1 can be made more flexible, and the ultraviolet lamp 31 can be better driven to move. When the rotating driver drives the first rotating part 322 to rotate, the guide rod 321 can drive the second rotating part 323 to rotate together, so as to realize the rotation of the ultraviolet lamp 31 together; when the first rotating part 322 slides along the guide rod 321, the second rotating part 323 is still connected to the inner and outer walls of the sewage inlet pipe 1; the second rotating part 323 can be designed in a form where one end abuts against the outer wall of the sewage inlet pipe 1 and the other end is rotatably connected to the inner and outer walls of the sewage inlet pipe 1. And the ultraviolet lamp 31 is slidably connected to the rotating device 32, making the replacement and maintenance of the lamp tubes more convenient, reducing the maintenance cost and downtime.

[0043] It should be noted that the rotating driver can be a common motor drive system on the market, so it will not be elaborated too much in the present invention. The sliding connection between the ultraviolet lamp 31 and the first rotating part 322 and the second rotating part 323 can adopt the existing common slide rail connection method or the method of cooperation between a buckle groove 7213. Therefore, it will not be elaborated in the present invention.

[0044] Additionally, it further includes a lamp replacement assembly 4. The lamp replacement assembly 4 includes a lifting device 41 and a support portion 42. The rotary driver is installed on the support portion 42, and the support portion 42 is installed at the driving end of the lifting device 41. The support portion 42 is located above the sewage inlet pipe 1 and outside the vertical movement path of the ultraviolet lamp 31. In this way, the rotary device 32 can move up and down under the drive of the lifting device 41, facilitating the maintenance and replacement of the ultraviolet lamp 31 tube. Since the lower end of the ultraviolet lamp 31 tube is close to the lower inner wall of the sewage inlet pipe 1, during maintenance, only the lifting device 41 needs to be operated to lower the rotary driver. At the same time, the first rotary portion 322 will also descend together, resulting in the lamp tube moving downward accordingly until the lower end of the lamp tube touches the inner wall of the sewage inlet pipe 1. Subsequently, continue to lower the rotary device 32, and the lamp tube will be gently pushed out of the rotary device 32 by the inner wall of the sewage inlet pipe 1. This design enables maintenance personnel to easily remove the ultraviolet lamp 31 tube, significantly simplifies the maintenance steps, reduces the equipment downtime, improves the treatment efficiency, and is also very suitable for scenarios where a large area of ultraviolet lamps 31 need to be replaced. At the same time, this replacement method avoids maintenance personnel directly contacting the sewage, enhancing the safety of maintenance operations.

[0045] It is worth mentioning that the first rotary portion 322 moves along the guide rod 321. Therefore, during the up and down movement of the rotary driver, the second rotary portion 323 will not move up and down accordingly but will always be in a state of being connected to the sewage inlet pipe 1, effectively preventing the sewage in the sewage inlet pipe 1 from overflowing.

[0046] Among them, the lifting device 41 can be a common cylinder or motor drive system on the market, so it will not be elaborated too much in the present invention.

[0047] Among them, the lamp replacement assembly 4 further includes a locking portion 43. The locking portion 43 is installed on the first rotary portion 322. Locking engagement portions are installed on both the ultraviolet lamp 31 and the first rotary portion 322, and the locking portion 43 can cooperate with the locking engagement portions. The locking portion 43 can ensure that the ultraviolet lamp 31 tube is stably fixed on the rotary device 32 when the ultraviolet lamp 31 does not need to be replaced or maintained, preventing it from loosening or falling off due to vibration or other external factors, thereby improving the safety of the entire system. Moreover, through the stable fixation of the locking portion 43, the position of the ultraviolet lamp 31 during normal operation is ensured to be unchanged, which helps to maintain a uniform ultraviolet irradiation effect and reduce the uneven disinfection phenomenon caused by the change of the lamp tube position, thereby enhancing the reliability and disinfection efficiency of the system. It should be noted that when the ultraviolet lamp 31 needs to be replaced, the locking portion 43 can be automatically unlocked through the control system so that the lamp tube can be smoothly pushed out of the first rotary portion 322 and the second rotary portion 323 of the rotary device 32. Among them, the locking portion 43 and the locking engagement portions can adopt common plug-in electric locks on the market, so they will not be elaborated too much in the present invention.

[0048] Additionally, it further includes a photoelectric sensor 5. A plurality of photoelectric sensors 5 are provided and installed on the second rotating part 323. The plurality of photoelectric sensors 5 correspond to the plurality of ultraviolet lamps 31 one by one. The photoelectric sensor 5 can detect the on / off state of the ultraviolet lamp 31. Once a certain lamp tube fails or goes out, it can immediately send a signal, facilitating timely replacement or repair. The plurality of photoelectric sensors 5 corresponding to the ultraviolet lamps 31 one by one can monitor the working state of each ultraviolet lamp 31 in real time. When a fault of the ultraviolet lamp 31 is detected, the fault signal sent by the photoelectric sensor 5 can immediately trigger the emergency system. The emergency system can make the rotating device 32 drive all the ultraviolet lamps 31 to rotate to complete the emergency work, buying more time for maintenance personnel and minimizing the impact of the failure of the ultraviolet lamp 31 on the sewage ultraviolet sterilization effect.

[0049] It should be noted that the photoelectric sensor 5, the residual chlorine sensor 23 and other devices mentioned in the present invention will all be connected to the total controller to achieve the adjustment and control of each device, pump and valve.

[0050] Additionally, it further includes a plurality of ejecting devices 6. The ejecting devices 6 are installed on the first rotating part 322. The ejecting end of the ejecting device 6 is fixedly connected to the upper end of the ultraviolet lamp 31. The plurality of ejecting devices 6 correspond to the plurality of ultraviolet lamps 31 one by one. The ejecting device 6 is electrically connected to the photoelectric sensor 5. The ejecting devices 6 corresponding to the ultraviolet lamps 31 one by one can accurately eject the faulty lamp tube when the photoelectric sensor 5 detects the damage of a specific lamp tube, so as to quickly locate the lamp tube that needs to be replaced, saving the time for finding the fault source. Through the precise operation of the ejecting device 6, maintenance personnel can directly replace the faulty lamp tube without checking all the lamp tubes one by one, greatly improving the efficiency of the maintenance work, shortening the downtime of the disinfection device, and being suitable for the daily simple maintenance work scenario.

[0051] In addition, it further includes a lamp tube rebounding device 7. A plurality of lamp tube rebounding devices 7 are provided and are located directly below the ultraviolet lamp 31. The lamp tube rebounding device 7 includes a support seat installed on the lower inner wall of the sewage inlet pipe 1, a rebounding part 71, a guide post 72, and an elastic element 73. The rebounding part 71 is slidably fitted on the upper end of the support seat. The guide post 72 is installed at the lower end of the support seat. A guide groove 721 is provided on the guide post 72, and the rebounding part 71 is slidably fitted with the guide groove 721. The elastic element 73 is fixedly arranged between the lower end of the rebounding part 71 and the support seat. Specifically, in the normal working state, the ultraviolet lamp 31 is not in contact with the lamp tube rebounding device 7, and the lamp tube rebounding device 7 is located below the ultraviolet lamp 31. A buffer material, such as a rubber pad, can be installed on the top of the rebounding part 71 to prevent the lamp tube from cracking or being scratched on the surface when contacting the lamp tube, and reduce the damage to the lamp tube caused by daily maintenance. In this way, when changing the lamp, the ultraviolet lamp 31 descends, and the lower end of the lamp tube will contact the rebounding part 71. Since a part of the lamp tube and the rotating device 32 will work in a sewage environment, dirt and biofilms that are not completely treated in the sewage may be adsorbed at their connection, resulting in the situation where the lamp tube is stuck in the rotating device 32. Therefore, when the lamp tube presses down the rebounding part 71, the elastic member will be compressed accordingly, and gradually give an upward thrust to the lamp tube, so that the lamp tube gradually overcomes the friction and obstacles, and then completes the action of disengaging from the rotating part, reducing the impact on the lamp tube caused by sudden shock. Among them, the design of the guide groove 721 ensures that the lamp tube can move along the correct direction during the pushing-out process, avoiding skewing or deviation. The locking part 43 can be unlocked when the lamp tube starts to press down. If the lamp tube is not stuck, the rebounding part 71 can eject the lamp tube without being compressed. However, it can also be unlocked after the lamp tube presses down a certain distance. In this way, when the lamp tube does encounter greater friction or obstacles, the elastic element 73 can accumulate more elastic potential energy, so as to provide a stronger thrust to help the lamp tube overcome these obstacles.

[0052] In addition, the guide post 72 is rotatably connected to the support, and an elastic pin 711 is fixedly arranged on the rebounding part 71. The elastic pin 711 is in sliding fit with the guide groove 721. The guide groove 721 includes an inclined part 7211 and a vertical part 7212. The upper end of the inclined part 7211 communicates with the upper end of the vertical part 7212 and is deeper than the upper end of the vertical part 7212. The lower end of the vertical part 7212 communicates with the lower end of the inclined part 7211 and is deeper than the lower end of the inclined part 7211. A groove 7213 is arranged at the upper end of the inclined part 7211, and the elastic pin 711 can be clamped with the groove 7213. This structure further optimizes the lamp tube rebounding device 7, and its working principle is as follows: The elastic pin 711 fixed on the rebounding part 71 will move along the guide groove 721. When the rebounding part 71 is pressed down by the lamp tube, the elastic pin 711 will move in the inclined part 7211 to realize the downward pressing of the rebounding part 71, and at the same time, the elastic member stores elastic potential energy. At this time, the guide post 72 will rotate accordingly to enable the elastic pin 711 to move smoothly downward; when the elastic pin 711 moves to the vertical part 7212, the locking part 43 is unlocked, and the elastic member will release the elastic potential energy to make the rebounding part 71 move upward, so as to realize the action of ejecting the lamp tube out of the rotating device 32. After replacing the lamp tube, use the locking part 43 to lock the new lamp tube, then the lifting device 41 presses the lamp tube downward to make it contact the rebounding part 71, and presses the elastic pin 711 of the rebounding part 71 into the groove 7213, and then lifts the lamp tube to separate the lamp tube from the rebounding part 71. Among them, the design of the groove 7213 can prevent the rebounding part 71 from rebounding by itself under unexpected circumstances, increasing the safety of the system; only when the lamp tube really needs to be replaced and enough pressure is applied, the elastic pin 711 will break out of the groove 7213, making the rebounding part 71 start to enter the compression and rebounding action. Of course, the locking part 43 can also be unlocked when the old lamp tube is pressed down at the beginning, so that the unjammed lamp tube can be directly ejected out of the rotating device 32 by the rebounding part 71.

[0053] It should be noted that the upper end of the inclined part 7211 communicates with the upper end of the vertical part 7212 and is deeper than the upper end of the vertical part 7212. The lower end of the vertical part 7212 communicates with the lower end of the inclined part 7211 and is deeper than the lower end of the inclined part 7211, so that the elastic pin 711 can only move in a predetermined direction and cannot move in the reverse direction, ensuring the stability of the operation of the lamp tube rebounding device 7.

[0054] In addition, the chlorination disinfection device 2 includes a spraying device 21, a reaction tank 22 and a residual chlorine sensor 23. The liquid inlet of the reaction tank 22 is fixedly connected to the liquid outlet of the sewage inlet pipe 1. The spraying device 21 is installed in the reaction tank 22 and one end is communicated with the sodium hypochlorite storage tank. A channel for the flow of sodium hypochlorite is provided in the spraying device. A plurality of nozzles 211 are installed at intervals from top to bottom in the spraying device 21. A first one-way valve 212 is installed in the nozzle 211. The residual chlorine sensor 23 is fixedly installed in the reaction tank 22 and is electrically connected to the spraying device 21. A second one-way valve 25, a pressure regulating valve 26 and a metering pump 27 are sequentially installed between the spraying device 21 and the sodium hypochlorite storage tank. The residual chlorine sensor 23 is electrically connected to both the metering pump 27 and the pressure regulating valve 26. In this way, the residual chlorine sensor 23 can monitor the residual chlorine concentration in the reaction tank 22 in real time, and according to the monitoring results of the residual chlorine concentration in the sewage, the control system can automatically adjust the spraying amount of sodium hypochlorite to maintain the best disinfection effect. It is worth mentioning that the nozzles 211 installed at intervals from top to bottom can effectively adjust the spraying amount of sodium hypochlorite. When a small amount of sodium hypochlorite is needed, the height of the sodium hypochlorite solution supplied from the sodium hypochlorite storage tank to the spraying device 21 can only reach the lower nozzle 211, so only the lower nozzle 211 will spray sodium hypochlorite; when more sodium hypochlorite is needed, the height of the sodium hypochlorite solution provided by the sodium hypochlorite storage tank can reach the upper nozzle 211, so that sodium hypochlorite can be sprayed from the upper and lower nozzles 211 at the same time. Among them, the first one-way valve 212 can prevent the sewage and sodium hypochlorite from flowing back into the spraying device 21, ensuring the stability of the system operation.

[0055] The metering pump 27 can accurately control the dosing amount of sodium hypochlorite to ensure that the dosage of each addition is accurate. Through the real-time monitoring of the residual chlorine sensor 23, the system can automatically adjust the working parameters of the metering pump 27 according to actual needs to achieve precise dosing. The pressure regulating valve 26 can stabilize the pressure of the sodium hypochlorite solution to ensure that the spraying device 21 can obtain stable flow and pressure under different working conditions, which helps to improve the uniformity and stability of spraying. Through the coordinated action of the metering pump 27 and the pressure regulating valve 26, the height of the sodium hypochlorite solution supplied from the sodium hypochlorite storage tank to the spraying device 21 can be regulated, so as to control the spraying of sodium hypochlorite from the nozzles 211 at different positions, improving the disinfection accuracy of the chlorination disinfection device 2. The second one-way valve 25 can also be used to further prevent the sodium hypochlorite solution from flowing back.

[0056] In fact, since the photoelectric sensor 5, the residual chlorine sensor 23 and other devices are all connected to the general controller, when the ultraviolet disinfection component 3 fails, the system can appropriately regulate and increase the dosing amount of sodium hypochlorite according to the situation to temporarily make up for the defect of the weakened ultraviolet sterilization effect. This emergency treatment mechanism buys more time for the maintenance personnel to carry out maintenance.

[0057] In addition, it further includes a stirring part 24. The stirring part 24 includes a rotary joint 241 and stirring blades 242. The rotating end of the rotary joint 241 is fixedly connected to the liquid inlet end of the spraying device 21. The stirring blades 242 are fixedly installed on the spraying device 21 and are located in the reaction tank 22 together with the spraying device 21. Among them, the rotary joint 241 can be driven by a driving device. In this way, through the rotary joint 241, the spraying device 21 can rotate during the spraying of sodium hypochlorite, making the sodium hypochlorite spray more evenly. The presence of the stirring blades 242 further promotes the full mixing of sodium hypochlorite and sewage, improves the disinfection effect, and reduces the chemical waste caused by uneven mixing.

[0058] In addition, a third one-way valve 8 can be provided. The third one-way valve 8 is installed between the liquid outlet of the sewage inlet pipe 11 and the liquid inlet of the chlorination disinfection device 2. The third one-way valve 8 can effectively prevent the liquid in the chlorination disinfection device 2 from flowing back into the sewage inlet pipe 1, ensuring the unidirectionality of the disinfection process, avoiding the mixing of treated water and untreated water, and ensuring the disinfection effect. A pumping system (such as a centrifugal pump) can also be installed before the third one-way valve 8 to assist in sending the water disinfected by ultraviolet rays into the chlorination disinfection device 2 to ensure smooth and efficient water flow transmission.

[0059] In summary, for such a sewage treatment and sterilization device, in case of damage to the ultraviolet lamp 31, it can be emergently processed by rotating the ultraviolet lamp 31, providing more time for maintenance personnel. In addition, the replacement method of the ultraviolet lamp 31 of this device is simple and fast, the chlorination disinfection efficiency is high, the dosage of sodium hypochlorite can be controlled according to the actual situation to ensure accurate dosing and uniform distribution, and the disinfection effect is improved. At the same time, the rotating device 32 can also remove the dirt and biofilm on the lamp tube surface, reducing the frequency of cleaning and maintenance.

[0060] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. A sewage treatment and sterilization device, comprising a sewage inlet pipe (1), a chlorination disinfection device (2) connected to a sodium hypochlorite storage tank, and an ultraviolet disinfection component (3). The liquid outlet of the sewage inlet pipe (1) is fixedly connected to the liquid inlet of the chlorination disinfection device (2). The ultraviolet disinfection component (3) is installed at the liquid inlet end of the sewage inlet pipe (1), and is characterized in that: The ultraviolet disinfection component (3) includes an ultraviolet lamp (31) and a rotating device (32) installed on the sewage inlet pipe (1). A plurality of ultraviolet lamps (31) are provided and installed at the rotating end of the rotating device (32). The rotating device (32) includes a rotating driver, a guide rod (321), a first rotating part (322) fixedly connected to the working end of the rotating driver, and a second rotating part (323) located below the first rotating part (322). The second rotating part (323) is rotatably connected to both the inner and outer walls of the sewage inlet pipe (1). The second rotating part (323) is fixedly connected to the lower end of the guide rod (321). The first rotating part (322) is slidably engaged with the upper end of the guide rod (321). The ultraviolet lamp (31) is slidably connected to the first rotating part (322) and the second rotating part (323), and the lower end of the ultraviolet lamp (31) extends to be close to the lower inner wall of the sewage inlet pipe (1). It further includes a lamp replacement component (4). The lamp replacement component (4) includes a lifting device (41) and a support part (42). The rotating driver is installed on the support part (42), and the support part (42) is installed at the driving end of the lifting device (41). The support part (42) is located above the sewage inlet pipe (1) and outside the vertical movement path of the ultraviolet lamp (31). The lamp replacement component (4) further includes a locking part (43). The locking part (43) is installed on the first rotating part (322). Locking engagement parts are installed on both the ultraviolet lamp (31) and the first rotating part (322), and the locking part (43) can cooperate with the locking engagement parts. It further includes a photoelectric sensor (5). A plurality of photoelectric sensors (5) are provided and installed on the second rotating part (323). The plurality of photoelectric sensors (5) correspond to the plurality of ultraviolet lamps (31) one by one. It further includes a plurality of ejecting devices (6). The ejecting devices (6) are installed on the first rotating part (322). The ejecting end of the ejecting device (6) is fixedly connected to the upper end of the ultraviolet lamp (31). The plurality of ejecting devices (6) correspond to the plurality of ultraviolet lamps (31) one by one. The ejecting device (6) is electrically connected to the photoelectric sensor (5).

2. The sewage treatment sterilization device according to claim 1, wherein: It further includes a lamp tube rebounding device (7). A plurality of lamp tube rebounding devices (7) are provided and located directly below the ultraviolet lamp (31). The lamp tube rebounding device (7) includes a support installed on the lower inner wall of the sewage inlet pipe (1), a rebounding part (71), a guide post (72), and an elastic element (73). The rebounding part (71) is slidably engaged with the upper end of the support. The guide post (72) is installed at the lower end of the support. A guide groove (721) is provided on the guide post (72), and the rebounding part (71) is slidably engaged with the guide groove (721). The elastic element (73) is fixedly arranged between the lower end of the rebounding part (71) and the support.

3. The sewage treatment sterilization device according to claim 2, characterized in that: The guiding column (72) is rotatably connected to the support. An elastic pin (711) is fixedly arranged on the rebounding part (71). The elastic pin (711) is in sliding fit with the guiding groove (721). The guiding groove (721) includes an inclined part (7211) and a vertical part (7212). The upper end of the inclined part (7211) is communicated with the upper end of the vertical part (7212) and deeper than the upper end of the vertical part (7212). The lower end of the vertical part (7212) is communicated with the lower end of the inclined part (7211) and deeper than the lower end of the inclined part (7211). A groove (7213) is arranged at the upper end of the inclined part (7211). The elastic pin (711) can be clamped with the groove (7213).

4. The sewage treatment and sterilization device according to claim 1, characterized in that: The chlorination disinfection device (2) includes a spraying device (21), a reaction tank (22) and a residual chlorine sensor (23). The liquid inlet of the reaction tank (22) is fixedly connected to the liquid outlet of the sewage inlet pipe (1). The spraying device (21) is installed in the reaction tank (22) and one end thereof is communicated with the sodium hypochlorite storage tank. A channel for the flow of sodium hypochlorite is arranged in the spraying device (21). A plurality of spray heads (211) are installed at intervals from top to bottom in the spraying device (21). A first one-way valve (212) is installed in the spray head (211). The residual chlorine sensor (23) is fixedly installed in the reaction tank (22) and electrically connected to the spraying device (21). A second one-way valve (25), a pressure regulating valve (26) and a metering pump (27) are successively installed between the spraying device (21) and the sodium hypochlorite storage tank. The residual chlorine sensor (23) is electrically connected to both the metering pump (27) and the pressure regulating valve (26).

5. A sewage treatment sterilization device according to claim 4, characterized in that: It further includes a stirring part (24). The stirring part (24) includes a rotary joint (241) and stirring blades (242). The rotating end of the rotary joint (241) is fixedly connected to the liquid inlet end of the spraying device (21). The stirring blades (242) are fixedly installed on the spraying device (21) and are located in the reaction tank (22) together with the spraying device (21).

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