Sewage treatment device and sludge desliming treatment method

Abstract

The invention relates to the technical field of sewage treatment, and discloses a sewage treatment device and a sludge desliming treatment method.Through arrangement of a sludge discharging mechanism, when a driving assembly drives a spiral shaft to rotate through a connecting shaft and sludge in a filtering assembly is discharged out of a sludge discharging opening, a sludge pressing plate of the sludge discharging mechanism presses the sludge discharged out of the sludge discharging opening into a sludge cake; sludge adhered to the periphery of the sludge discharging opening is thoroughly scraped through the sludge scraping shovel, so that the sludge adhered to the periphery of the sludge discharging opening is prevented from blocking the sludge discharging opening, the rotating connecting shaft can drive the scraping plate in the discharging hopper to reciprocate through the transmission rod, and sludge cakes adhered to the discharging hopper are scraped in different directions. The cleaning and scraping plate is arranged on the discharging hopper, the cleaning and scraping effect of the cleaning and scraping plate is improved, meanwhile, when a mud cake adhering to the discharging hopper is scraped, the cleaning and scraping plate can completely scrape off the mud cake, follow-up treatment and transportation of the mud cake are facilitated, and the treatment difficulty and the transportation cost of the mud cake are reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a wastewater treatment device and a sludge desludge treatment method. Background Technology

[0002] Wastewater refers to water discharged from domestic and industrial sources that has been polluted to a certain extent and has lost its original function. It mainly includes domestic sewage, industrial wastewater and initial rainwater. Wastewater treatment is the process of removing or transforming pollutants in wastewater through technical means to make the water quality meet specific uses or discharge requirements. Wastewater treatment is widely used in various fields. Screw presses are usually used in the process of wastewater treatment.

[0003] Chinese patent CN218025810U discloses a sewage dewatering screw press. This device connects the sludge cleaning mechanism and the output end of the drive motor to the machine body. When the drive motor is working, it drives the cleaning brush of the sludge cleaning mechanism to clean the extruded sludge cake, increasing the falling speed of the sludge cake and preventing the sludge outlet from becoming blocked, thus ensuring the discharge of the sludge cake. At the same time, the structural design of the sludge vibration mechanism causes the sludge cake on the surface of the discharge plate to vibrate, improving the efficiency of the sludge cake falling. However, in actual use, the bristles of the cleaning brush automatically separate when cleaning the sludge adhering to the sludge around the sludge outlet, leaving gaps. As a result, some sludge remains around the sludge outlet, making the cleaning of the sludge adhering to the sludge around the sludge outlet incomplete. Furthermore, the vibration of the discharge plate caused by the sludge vibration mechanism breaks the sludge cake into small pieces and throws some of them out, increasing the difficulty of collecting the sludge cake. The integrity of the sludge cake is also important. A complete sludge cake is more conducive to subsequent processing and transportation. When the sludge cake is too broken, it will lead to an increased transportation volume, increasing the processing difficulty and transportation costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a wastewater treatment device and a sludge desludge treatment method to overcome the aforementioned technical problems in existing related technologies.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a wastewater treatment device, comprising a frame, on which a water receiving tank and a dewatering chamber are sequentially installed; a flocculation box is provided on one side of the frame; and a sludge discharge chamber and a discharge hopper are sequentially installed on the other side of the dewatering chamber. The sludge discharge chamber is connected to the dewatering chamber through a sludge discharge port. The device is characterized in that: a filter assembly, a drive assembly, and a sludge discharge mechanism are provided on the frame; the filter assembly is installed inside the dewatering chamber; one end of the filter assembly is connected to the sludge discharge port; and the other end of the filter assembly is connected to the conveying pipe of the flocculation box; the drive assembly includes a spiral shaft installed in the filter assembly; one end of the spiral shaft passes through the sludge discharge port; and the spiral shaft is connected to a connecting pipe at that end. A connecting shaft is provided to drive the spiral shaft to rotate, conveying the sludge in the filter assembly to the sludge discharge bin. The sludge discharge mechanism includes a pressing plate, a transmission rod, and a scraper. The pressing plate is connected to the connecting shaft and located on one side of the sludge discharge port. The pressing plate is used to press the discharged sludge into a sludge cake. A scraper is installed on the side of the pressing plate. When the pressing plate rotates with the connecting shaft, it drives the scraper to scrape off the sludge adhering to the periphery of the sludge discharge port. The transmission rod is connected to the connecting shaft. The scraper is installed in the discharge hopper and cooperates with the transmission rod. When the connecting shaft drives the transmission rod to rotate, it drives the scraper to reciprocate within the discharge hopper, scraping off the sludge cake adhering to the discharge hopper.

[0006] Preferably, the dewatering chamber is fixedly connected to the frame, the sludge discharge chamber is fixedly connected to the side of the dewatering chamber away from the flocculation box, a drive box is fixedly installed in the sludge discharge chamber away from the sludge discharge port, a bearing seat is provided in the drive box, the bearing seat is fixedly connected to the side wall of the sludge discharge chamber, and two fixed seats are fixedly connected in sequence to one side of the discharge hopper, and a sliding rod is fixedly connected between the two fixed seats.

[0007] Preferably, the drive assembly further includes a drive motor, which is fixedly installed on the outside of the sludge discharge chamber. One end of the spiral shaft is rotatably connected inside the filter assembly, and the other end of the spiral shaft is coaxially and fixedly connected to the connecting shaft. The connecting shaft extends through the drive box to the outside of the sludge discharge chamber and is fixedly connected to the output end of the drive motor. A drive bevel gear is coaxially and fixedly connected to the connecting shaft, and the drive bevel gear is located inside the drive box.

[0008] Preferably, the pressing plate is fixedly connected to the connecting shaft, and a gap is left between the pressing plate and the sludge discharge port. A fixing rod is fixedly connected to the side of the pressing plate away from the sludge discharge port, and the end of the fixing rod extends out of the pressing plate. The sludge scraper is fixedly connected to the extended end of the fixing rod, and the sludge scraper is inclined towards one side of the fixing rod.

[0009] Preferably, the transmission rod is rotatably mounted on the bearing seat, and a transmission bevel gear is coaxially fixedly connected to one end of the transmission rod. The transmission bevel gear meshes with the driving bevel gear. The other end of the transmission rod extends through the outside of the sludge discharge bin and is fixedly connected to one end of the eccentric wheel. The other end of the eccentric wheel is rotatably connected to one end of the connecting rod.

[0010] Preferably, connecting sleeves are fixedly installed on both sides of the scraper blade. A guide rod is fixedly connected inside the connecting sleeve, and a support spring is sleeved on the guide rod. The lower end of the support spring abuts against the bottom of the connecting sleeve. A connecting rod is slidably connected inside the connecting sleeve. The connecting rod is hollow inside, and a base plate is fixedly installed at the lower end of the connecting rod. The upper end of the guide rod extends through the base plate into the connecting rod. The base plate presses against the upper end of the support spring. A rotating shaft is fixedly connected to the outer side of the connecting rod near the connecting rod. The other end of the connecting rod is rotatably connected to the rotating shaft. A sliding groove is also provided on the connecting rod. The sliding groove is located below the rotating shaft. One side plate of the discharge hopper is slidably connected to the sliding groove. A connecting seat is fixedly connected to the outer side of the connecting rod near the sliding rod. The connecting seat is slidably connected to the sliding rod.

[0011] Preferably, the frame is fixedly connected to the water receiving tank, the water receiving tank is located below the dehydration chamber, a cleaning pipe is fixedly installed on the dehydration chamber, a plurality of nozzles are connected to the cleaning pipe, the plurality of nozzles are evenly arranged on the cleaning pipe, and the nozzles correspond to the filter assembly above.

[0012] Preferably, the flocculation box has an inlet at the top, and a dosing pipe is fixedly connected to the side of the flocculation box. The side of the flocculation box near the frame is fixedly connected to one end of the conveying pipe, and the other end of the conveying pipe is fixedly connected to the end of the filter assembly near the flocculation box.

[0013] Preferably, a stirring motor is fixedly installed on the top of the flocculation box, a stirring shaft is fixedly connected to the output shaft of the stirring motor, the stirring shaft is located inside the flocculation box, and a stirring paddle is fixedly connected to the stirring shaft.

[0014] This invention also provides a sludge desludge treatment method, which uses a wastewater treatment device, and the specific steps are as follows:

[0015] First, wastewater containing sludge is discharged into a flocculation tank to mix with the chemicals. Then, the wastewater containing sludge in the flocculation tank is transported to the filter assembly for filtration through a conveying pipe. At this time, the drive assembly drives the screw shaft to rotate through the connecting shaft, which transports the sludge in the filter assembly to the sludge discharge port. The sludge discharge mechanism then compresses the sludge discharged from the sludge discharge port into a sludge cake through the sludge pressing plate. At the same time, the sludge pressing plate drives the sludge scraper to rotate around the sludge discharge port to scrape off the sludge adhering to the sludge discharge port. Meanwhile, the connecting shaft drives the cleaning scraper in the discharge hopper to move back and forth through the transmission rod to completely scrape off the sludge cake adhering to the discharge hopper.

[0016] Compared with the prior art, the present invention provides a wastewater treatment device and a sludge desludge treatment method, which have the following beneficial effects:

[0017] 1. The wastewater treatment device and sludge desludge treatment method, through the setting of the sludge discharge mechanism, when the drive component drives the screw shaft to rotate through the connecting shaft to discharge the sludge from the filter component to the sludge discharge port, the sludge pressing plate of the sludge discharge mechanism presses the sludge discharged from the sludge discharge port into sludge cakes, and the sludge scraper thoroughly scrapes off the sludge adhering to the sludge discharge port, thereby avoiding the sludge adhering to the sludge discharge port from clogging the sludge discharge port. In addition, the rotating connecting shaft also drives the cleaning scraper in the discharge hopper to move back and forth through the transmission rod, scraping off the sludge cakes adhering to the discharge hopper from different directions, improving the cleaning effect of the cleaning scraper. At the same time, when scraping off the sludge cakes adhering to the discharge hopper, the cleaning scraper can scrape off the sludge cakes completely, which facilitates the subsequent processing and transportation of the sludge cakes and reduces the processing difficulty and transportation cost of the sludge cakes.

[0018] 2. The wastewater treatment device and sludge desludge treatment method, through the linkage between the connecting shaft and the transmission rod, enable the excess energy generated when the drive motor drives the spiral shaft to rotate to be used to drive the scraper, thereby achieving energy saving and reducing the cost of wastewater treatment. By setting multiple sets of filter components, drive components and sludge discharge mechanism on the dewatering chamber to treat wastewater containing sludge simultaneously, the efficiency of wastewater treatment is improved.

[0019] 3. In this wastewater treatment device and sludge desludge treatment method, through the cooperation of the connecting rod and the connecting sleeve, during the process of the connecting rod pulling the scraper plate to move, the bottom plate on the connecting rod presses down the support spring, so that the support spring pushes the scraper plate to tightly abut against the discharge hopper. At the same time, through the setting of the support spring, the vibration of the scraper plate during movement is greatly reduced, which can effectively scrape off the sludge cake adhering to the discharge hopper completely. Furthermore, through the cooperation between the chute and the side of the discharge hopper and the cooperation between the connecting seat and the sliding rod, when the connecting rod pulls the scraper plate to move, the scraper plate can stably stick to the discharge hopper and move in a straight line, thereby further improving the scraping effect of the scraper plate. Attached Figure Description

[0020] Figure 1 This is one of the side view structural diagrams of the main body of the present invention;

[0021] Figure 2 This is a second schematic diagram of the main body side view structure of the present invention;

[0022] Figure 3 This is the third side view of the main body structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the main planar structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the flocculation box of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the filter assembly of the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the drive box of the present invention;

[0027] Figure 8 for Figure 7 A magnified schematic diagram of the structure at point A;

[0028] Figure 9 This is a schematic diagram of the internal structure of the connecting rod of the present invention;

[0029] Figure 10 for Figure 9 A magnified schematic diagram of the structure at point B;

[0030] Figure 11 This is a schematic diagram of the internal structure of the sludge discharge bin of the present invention;

[0031] Figure 12 for Figure 11 A magnified structural diagram of point C.

[0032] In the diagram: 1. Frame; 11. Water receiving tank; 12. Dewatering chamber; 13. Cleaning pipe; 14. Nozzle; 15. Sludge discharge chamber; 151. Sludge discharge port; 152. Drive box; 153. Bearing seat; 16. Discharge hopper; 161. Fixed base; 162. Slide rod; 2. Filter assembly; 3. Drive assembly; 31. Spiral shaft; 32. Connecting shaft; 321. Drive bevel gear; 33. Drive motor; 4. Sludge discharge mechanism; 41. Sludge pressing plate; 411. Fixed rod ; 42. Sludge scraper; 43. Transmission rod; 431. Transmission bevel gear; 44. Eccentric wheel; 45. Connecting rod; 46. Cleaning scraper; 461. Connecting sleeve; 462. Guide rod; 463. Support spring; 47. Connecting rod; 471. Base plate; 472. Rotating shaft; 473. Slide groove; 474. Connecting seat; 5. Flocculation box; 51. Water inlet; 52. Dosing pipe; 53. Conveying pipe; 54. Agitator motor; 55. Agitator shaft; 56. Agitator paddle. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-12A wastewater treatment device includes a frame 1, on which a water receiving tank 11 and a dewatering chamber 12 are sequentially mounted. A flocculation box 5 is provided on one side of the frame 1, and a sludge discharge chamber 15 and a discharge hopper 16 are sequentially mounted on the other side of the dewatering chamber 12. The sludge discharge chamber 15 is connected to the dewatering chamber 12 through a sludge discharge port 151. A filter assembly 2, a drive assembly 3, and a sludge discharge mechanism 4 are provided on the frame 1. The filter assembly 2 is installed in the dewatering chamber 12, with one end connected to the sludge discharge port 151 and the other end connected to the conveying pipe 53 of the flocculation box 5. The drive assembly 3 includes a spiral shaft 31, which is installed in the filter assembly 2. One end of the spiral shaft 31 passes through the sludge discharge port 151, and a connecting shaft 32 is connected to this end of the spiral shaft 31. The sludge discharge mechanism 4 is used to drive the spiral shaft 31 to rotate and transport the sludge in the filter assembly 2 to the sludge discharge bin 15. The sludge discharge mechanism 4 includes a pressing plate 41, a transmission rod 43 and a scraper 46. The pressing plate 41 is connected to the connecting shaft 32 and is located on one side of the sludge discharge port 151. The pressing plate 41 is used to press the discharged sludge into a sludge cake. A scraper 42 is installed on the side of the pressing plate 41. When the pressing plate 41 rotates with the connecting shaft 32, it drives the scraper 42 to scrape off the sludge adhering to the periphery of the sludge discharge port 151. The transmission rod 43 is connected to the connecting shaft 32. The scraper 46 is installed in the discharge hopper 16 and cooperates with the transmission rod 43. When the connecting shaft 32 drives the transmission rod 43 to rotate, it drives the scraper 46 to move back and forth in the discharge hopper 16 to scrape off the sludge cake adhering to the discharge hopper 16.

[0035] The filter assembly 2 is composed of several alternating moving plates and fixed rings. The end of the filter assembly 2 near the flocculation box 5 is the concentration section, while the end near the sludge discharge chamber 15 is the dewatering section. During use, wastewater mixed with sludge is transported to the flocculation box 5 and mixed with chemicals. Then, the wastewater containing sludge is discharged from the flocculation box 5 into the filter assembly 2 through the conveying pipe 53. Simultaneously, the drive assembly 3 drives the spiral shaft 31 to rotate within the filter assembly 2 via the connecting shaft 32, transporting the wastewater containing sludge to the sludge discharge chamber 15. During this process, the wastewater containing sludge passes sequentially through the concentration section and dewatering section of the filter assembly 2. The wastewater seeps out from the gaps between the moving and fixed rings of the filter assembly 2, thus filtering out the sludge. The rotating spiral shaft 31 then transports the sludge to the sludge discharge port 151 for discharge. The pressing plate 41, which rotates with the connecting shaft 32, presses the sludge discharged from the sludge discharge port 151 into a sludge cake, thus facilitating subsequent processing. As the pressing plate 41 rotates, the scraper 42 on the pressing plate 41 scrapes off the sludge adhering to the area around the sludge discharge port 151, preventing the sludge from accumulating and clogging the sludge discharge port 151. The sludge cake discharged from the sludge discharge port 151 and the sludge scraped off by the scraper 42 both fall into the discharge hopper 16 and are discharged from the device along the discharge hopper 16. During the discharge of the sludge cake from the discharge hopper 16, the rotating transmission rod 43 drives the cleaning scraper 46 inside the discharge hopper 16 to move back and forth, scraping off the sludge cake adhering to the discharge hopper 16. By using the cleaning scraper 46 to scrape off the sludge cake inside the discharge hopper 16, the integrity of the sludge cake is ensured, facilitating subsequent processing and transportation.

[0036] Furthermore, the dewatering chamber 12 is fixedly connected to the frame 1, and the sludge discharge chamber 15 is fixedly connected to the side of the dewatering chamber 12 away from the flocculation box 5. A drive box 152 is fixedly installed on the side of the sludge discharge chamber 15 away from the sludge discharge port 151. A bearing seat 153 is provided inside the drive box 152. The bearing seat 153 is fixedly connected to the side wall of the sludge discharge chamber 15. Two fixed seats 161 are fixedly connected in sequence on one side of the discharge hopper 16. A slide rod 162 is fixedly connected between the two fixed seats 161.

[0037] Furthermore, the drive assembly 3 also includes a drive motor 33, which is fixedly installed on the outside of the sludge discharge chamber 15. One end of the spiral shaft 31 is rotatably connected to the filter assembly 2, and the other end of the spiral shaft 31 is coaxially fixedly connected to the connecting shaft 32. The connecting shaft 32 extends through the drive box 152 to the outside of the sludge discharge chamber 15 and is fixedly connected to the output end of the drive motor 33. A drive bevel gear 321 is coaxially fixedly connected to the connecting shaft 32, and the drive bevel gear 321 is located inside the drive box 152.

[0038] In use, the drive motor 33 drives the spiral shaft 31 to rotate inside the filter assembly 2 via the connecting shaft 32. At the same time, the connecting shaft 32 drives the drive bevel gear 321 to rotate synchronously. The setting of the drive box 152 prevents the discharged mud cake from falling onto the drive bevel gear 321 and transmission rod 43 in the mud discharge chamber 15, thus avoiding affecting the operation of the mud discharge mechanism 4 and ensuring the normal operation of the device.

[0039] Furthermore, the pressing plate 41 is fixedly connected to the connecting shaft 32, and there is a gap between the pressing plate 41 and the mud discharge port 151. A fixing rod 411 is fixedly connected to the side of the pressing plate 41 away from the mud discharge port 151. The end of the fixing rod 411 extends out of the pressing plate 41, and the mud scraper 42 is fixedly connected to the extended end of the fixing rod 411, and the mud scraper 42 is inclined towards one side of the fixing rod 411.

[0040] When the sludge is discharged from the spiral shaft 31, the sludge will be squeezed by the sludge pressing plate 41 and turned into a mud cake, which will be discharged from the gap between the sludge pressing plate 41 and the sludge discharge port 151. As the sludge pressing plate 41 rotates, the inclined sludge scraper 42 on the fixed rod 411 scrapes up the sludge adhering to the sludge discharge port 151. The scraped sludge will fall into the discharge hopper 16 along the inclined direction of the sludge scraper 42.

[0041] Furthermore, the transmission rod 43 is rotatably mounted on the bearing seat 153. One end of the transmission rod 43 is coaxially fixedly connected to the transmission bevel gear 431, which meshes with the drive bevel gear 321. The other end of the transmission rod 43 extends through to the outside of the sludge discharge bin 15 and is fixedly connected to one end of the eccentric wheel 44. The other end of the eccentric wheel 44 is rotatably connected to one end of the connecting rod 45.

[0042] When the connecting shaft 32 drives the drive bevel gear 321 to rotate, the drive bevel gear 321 drives the transmission rod 43 to rotate on the bearing seat 153 through the transmission bevel gear 431, thereby causing the transmission rod 43 to drive the eccentric wheel 44 to rotate.

[0043] Furthermore, connecting sleeves 461 are fixedly installed on both sides of the scraper blade 46. A guide rod 462 is fixedly connected inside the connecting sleeve 461. A support spring 463 is sleeved on the guide rod 462. The lower end of the support spring 463 abuts against the bottom of the connecting sleeve 461. A connecting rod 47 is slidably connected inside the connecting sleeve 461. The connecting rod 47 is hollow inside, and a base plate 471 is fixedly installed at the lower end of the connecting rod 47. The upper end of the guide rod 462 extends through the base plate 471 into the connecting rod 47. 1. Pressed on the upper end of the support spring 463, wherein the outer side of the connecting rod 47 near the connecting rod 45 is fixedly connected to the rotating shaft 472, and the other end of the connecting rod 47 is rotatably connected to the rotating shaft 472. The connecting rod 47 is also provided with a sliding groove 473, which is located below the rotating shaft 472. One side plate of the discharge hopper 16 is slidably connected in the sliding groove 473, and the outer side of the connecting rod 47 near the slide rod 162 is fixedly connected to the connecting seat 474, which is slidably connected to the slide rod 162.

[0044] When the eccentric wheel 44 rotates, it drives the scraper plate 46 to reciprocate within the discharge hopper 16 via the connecting rod 45. During this process, when the end of the eccentric wheel 44 connected to the connecting rod 45 rotates from the bottom to the top, the eccentric wheel 44 pulls the scraper plate 46 upwards through the connecting rod 45. Conversely, when the end of the eccentric wheel 44 connected to the connecting rod 45 rotates from the top to the bottom, the eccentric wheel 44 pushes the scraper plate 46 downwards through the connecting rod 45, thereby scraping away the mud cake adhering to the discharge hopper 16 from different directions. During the movement of the scraper 46, the connecting rod 47 compresses the support spring 463 through the base plate 471, causing the support spring 463 to push the scraper 46 to press tightly against the discharge hopper 16. At the same time, the support spring 463 greatly reduces the vibration of the scraper 46 during movement, so that the scraper 46 can scrape off the mud cake completely. Furthermore, through the cooperation between the slide groove 473 and the side of the discharge hopper 16 and the cooperation between the connecting seat 474 and the slide rod 162, when the connecting rod 45 pulls the scraper 46 to move, the scraper 46 can stably stick to the discharge hopper 16 and move in a straight line.

[0045] Furthermore, the frame 1 is fixedly connected to the water receiving tank 11, which is located below the dehydration chamber 12. A cleaning pipe 13 is fixedly installed on the dehydration chamber 12, and several nozzles 14 are connected to the cleaning pipe 13. The nozzles 14 are evenly arranged on the cleaning pipe 13, and the nozzles 14 are located above the filter assembly 2.

[0046] The wastewater filtered by the filter assembly 2 flows into the water receiving tank 11 and is discharged into the next wastewater treatment process through the drain pipe on the water receiving tank 11. When the device needs to be tilted, the cleaning pipe 13 delivers cleaning water to each nozzle 14, and each nozzle 14 sprays cleaning water onto the outside of the filter assembly 2, thereby cleaning the filter assembly 2 in the dehydration chamber 12.

[0047] Furthermore, the flocculation box 5 is provided with an inlet 51 on the top, and a dosing pipe 52 is fixedly connected to the side of the flocculation box 5. The side of the flocculation box 5 near the frame 1 is fixedly connected to one end of the conveying pipe 53, and the other end of the conveying pipe 53 is fixedly connected to the end of the filter assembly 2 near the flocculation box 5.

[0048] Wastewater containing sludge is discharged into the flocculation tank 5 through the inlet 51, while the reagent is transported into the flocculation tank 5 through the dosing pipe 52 and mixed with the wastewater.

[0049] Furthermore, a stirring motor 54 is fixedly installed on the top of the flocculation box 5, and a stirring shaft 55 is fixedly connected to the output shaft of the stirring motor 54. The stirring shaft 55 is located inside the flocculation box 5, and a stirring paddle 56 is fixedly connected to the stirring shaft 55.

[0050] In the process of mixing wastewater with chemicals, the stirring motor 54 drives the stirring shaft 55 to rotate the stirring paddle 56 inside the flocculation box 5. The stirring paddle 56 stirs the wastewater and chemicals, allowing them to mix thoroughly and improving the wastewater treatment efficiency of the device.

[0051] This invention also provides a sludge desludge treatment method, which uses a wastewater treatment device, and the specific steps are as follows:

[0052] First, wastewater containing sludge is discharged into the flocculation tank 5 to mix with the chemicals. Then, the wastewater containing sludge in the flocculation tank 5 is transported to the filter assembly 2 through the conveying pipe 53 for filtration. At this time, the drive assembly 3 drives the spiral shaft 31 to rotate through the connecting shaft 32, and transports the sludge in the filter assembly 2 to the sludge discharge port 151 for discharge. The sludge discharge mechanism 4 then compresses the sludge discharged from the sludge discharge port 151 into a sludge cake through the sludge pressing plate 41. At the same time, the sludge pressing plate 41 drives the sludge scraper 42 to rotate around the sludge discharge port 151 to scrape off the sludge adhering to the sludge discharge port 151. Meanwhile, the connecting shaft 32 drives the cleaning scraper 46 in the discharge hopper 16 to move back and forth through the transmission rod 43 to completely scrape off the sludge cake adhering to the discharge hopper 16.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device, comprising a frame, on which a water receiving tank and a dewatering chamber are sequentially mounted; a flocculation box is provided on one side of the frame; and a sludge discharge chamber and a discharge hopper are sequentially mounted on the other side of the dewatering chamber; the sludge discharge chamber is connected to the dewatering chamber via a sludge discharge port, characterized in that: The frame is equipped with a filter assembly, a drive assembly, and a sludge discharge mechanism. The filter assembly is installed inside the dewatering chamber, with one end connected to the sludge discharge port and the other end connected to the conveying pipe of the flocculation box. The drive assembly includes a spiral shaft installed within the filter assembly, with one end passing through the sludge discharge port. A connecting shaft is connected to this end of the spiral shaft, driving the spiral shaft to rotate and convey the sludge from the filter assembly to the sludge discharge chamber. The sludge discharge mechanism includes a pressing plate, a transmission rod, and... A cleaning scraper and a pressing plate are connected to the connecting shaft and located on one side of the sludge discharge port. The pressing plate is used to press the discharged sludge into a sludge cake. A scraper is installed on the side of the pressing plate. When the pressing plate rotates with the connecting shaft, it drives the scraper to scrape off the sludge adhering to the periphery of the sludge discharge port. The transmission rod is connected to the connecting shaft. The cleaning scraper is installed in the discharge hopper and cooperates with the transmission rod. When the connecting shaft drives the transmission rod to rotate, it drives the cleaning scraper to reciprocate within the discharge hopper to scrape off the sludge cake adhering to the discharge hopper.

2. The wastewater treatment device according to claim 1, characterized in that: The dewatering chamber is fixedly connected to the frame, and the sludge discharge chamber is fixedly connected to the side of the dewatering chamber away from the flocculation box. A drive box is fixedly installed inside the sludge discharge chamber away from the sludge discharge port. A bearing seat is provided inside the drive box. The bearing seat is fixedly connected to the side wall of the sludge discharge chamber. Two fixed seats are fixedly connected in sequence to one side of the discharge hopper. A sliding rod is fixedly connected between the two fixed seats.

3. The wastewater treatment device according to claim 2, characterized in that: The drive assembly also includes a drive motor, which is fixedly installed on the outside of the sludge discharge chamber. One end of the spiral shaft is rotatably connected inside the filter assembly, and the other end of the spiral shaft is coaxially and fixedly connected to the connecting shaft. The connecting shaft extends through the drive box to the outside of the sludge discharge chamber and is fixedly connected to the output end of the drive motor. A drive bevel gear is coaxially and fixedly connected to the connecting shaft, and the drive bevel gear is located inside the drive box.

4. A wastewater treatment device according to claim 3, characterized in that: The pressing plate is fixedly connected to the connecting shaft, and there is a gap between the pressing plate and the sludge discharge port. A fixing rod is fixedly connected to the side of the pressing plate away from the sludge discharge port, and the end of the fixing rod extends out of the pressing plate. The sludge scraper is fixedly connected to the extended end of the fixing rod, and the sludge scraper is inclined towards one side of the fixing rod.

5. A wastewater treatment device according to claim 4, characterized in that: The transmission rod is rotatably mounted on the bearing seat. A transmission bevel gear is coaxially fixedly connected to one end of the transmission rod, and the transmission bevel gear meshes with the driving bevel gear. The other end of the transmission rod extends through the outside of the sludge discharge bin and is fixedly connected to one end of the eccentric wheel. The other end of the eccentric wheel is rotatably connected to one end of the connecting rod.

6. A wastewater treatment device according to claim 5, characterized in that: Connecting sleeves are fixedly installed on both sides of the scraper blade. A guide rod is fixedly connected inside the connecting sleeve, and a support spring is sleeved on the guide rod. The lower end of the support spring abuts against the bottom of the connecting sleeve. A connecting rod is slidably connected inside the connecting sleeve. The connecting rod is hollow inside, and a base plate is fixedly installed at the lower end of the connecting rod. The upper end of the guide rod extends through the base plate into the connecting rod. The base plate presses against the upper end of the support spring. A rotating shaft is fixedly connected to the outer side of the connecting rod near the connecting rod. The other end of the connecting rod is rotatably connected to the rotating shaft. A sliding groove is also provided on the connecting rod. The sliding groove is located below the rotating shaft. One side plate of the discharge hopper is slidably connected to the sliding groove. A connecting seat is fixedly connected to the outer side of the connecting rod near the sliding rod. The connecting seat is slidably connected to the sliding rod.

7. A wastewater treatment device according to claim 1, characterized in that: The frame is fixedly connected to the water receiving tank, which is located below the dehydration chamber. A cleaning pipe is fixedly installed on the dehydration chamber, and several nozzles are connected to the cleaning pipe. The nozzles are evenly arranged on the cleaning pipe, and the nozzles correspond to the filter assembly above it.

8. A wastewater treatment device according to claim 1, characterized in that: The flocculation box has an inlet at the top, and a dosing pipe is fixedly connected to the side of the flocculation box. The side of the flocculation box near the frame is fixedly connected to one end of the delivery pipe, and the other end of the delivery pipe is fixedly connected to the end of the filter assembly near the flocculation box.

9. A wastewater treatment device according to claim 8, characterized in that: A stirring motor is fixedly installed on the top of the flocculation box. A stirring shaft is fixedly connected to the output shaft of the stirring motor. The stirring shaft is located inside the flocculation box, and a stirring paddle is fixedly connected to the stirring shaft.

10. A sludge desludge treatment method, characterized in that: The wastewater treatment device according to any one of claims 1-9 is used, and the specific steps are as follows: First, wastewater containing sludge is discharged into a flocculation tank to mix with the chemicals. Then, the wastewater containing sludge in the flocculation tank is transported to the filter assembly for filtration through a conveying pipe. At this time, the drive assembly drives the screw shaft to rotate through the connecting shaft, which transports the sludge in the filter assembly to the sludge discharge port. The sludge discharge mechanism then compresses the sludge discharged from the sludge discharge port into a sludge cake through the sludge pressing plate. At the same time, the sludge pressing plate drives the sludge scraper to rotate around the sludge discharge port to scrape off the sludge adhering to the sludge discharge port. Meanwhile, the connecting shaft drives the cleaning scraper in the discharge hopper to move back and forth through the transmission rod to completely scrape off the sludge cake adhering to the discharge hopper.

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