A sewage sludge treatment system

Abstract

This application relates to a sewage sludge treatment system, which includes a sewage sludge pool, a sedimentation tank arranged on one side of the sewage sludge pool for sewage to flow in, a sewage treatment tank arranged on the side of the sedimentation tank away from the sewage sludge pool, a first sludge pushing component arranged in the sewage sludge pool to push the sludge towards the side away from the sedimentation tank, a second sludge pushing component arranged in the sedimentation tank to push the sludge towards the side away from the sewage treatment tank, a sludge receiving component arranged on the side of the sewage sludge pool away from the sedimentation tank, an impurity cleaning component arranged on the side of the sludge receiving component away from the sewage sludge pool, a sludge drying component arranged on the side of the impurity cleaning component away from the sludge receiving component, and a mud strip sintering component arranged on the side of the sludge drying component away from the sludge receiving component. This application has the characteristics of removing impurities in sewage sludge and improving the treatment efficiency, etc.

Description

Technical Field

[0001] The present application relates to the technical field of sewage sludge treatment, and in particular to a sewage sludge treatment system. Background Art

[0002] At present, with the development of the economic society, a large amount of water resources are needed every day. After life and production activities, this water becomes sewage. If this sewage is directly discharged into natural water bodies without treatment, it will damage the natural water ecosystem. Therefore, how to treat this sewage and protect the natural environment has attracted more and more attention.

[0003] A large amount of sludge is usually mixed in sewage, and there are usually more impurities hidden in the sludge, such as plastic bags, metal parts, etc. And there are more germs in sewage sludge, and it is not safe to directly remove them manually. When treating sewage sludge, these impurities may affect the treatment process. Summary of the Invention

[0004] In order to remove larger impurities in sewage sludge, the present application provides a sewage sludge treatment system.

[0005] The above object of the present application is achieved by the following technical solutions:

[0006] A sewage sludge treatment system includes a sewage sludge pool, a sedimentation tank provided on one side of the sewage sludge pool for sewage to flow in, a sewage treatment tank provided on the side of the sedimentation tank away from the sewage sludge pool, a first sludge pushing component provided in the sewage sludge pool for pushing the sludge away from the sedimentation tank, a second sludge pushing component provided in the sedimentation tank for pushing the sludge away from the sewage treatment tank, a sludge receiving component provided on the side of the sewage sludge pool away from the sedimentation tank, an impurity cleaning component provided on the side of the sludge receiving component away from the sewage sludge pool, a sludge drying component provided on the side of the impurity cleaning component away from the sludge receiving component, and a mud bar sintering component provided on the side of the sludge drying component away from the sludge receiving component.

[0007] By adopting the above technical solution, when treating sewage sludge through the sewage sludge treatment system, the sewage sludge is first poured into the sewage sludge tank together. Subsequently, the sewage will directly flow into the sedimentation tank, and the sludge left in the sewage sludge tank will be pushed into the sludge receiving component under the action of the first sludge pushing component. After the sewage is sedimented in the sedimentation tank, some sludge will also remain at the bottom of the sedimentation tank. At this time, the second sludge pushing component is used to push the sludge towards the sludge receiving component, and the sewage will enter the sewage treatment tank for treatment. The sludge then enters the impurity cleaning component from the sludge receiving component. The plastic, metal and other impurities in the sludge are cleaned through the impurity cleaning component. Subsequently, the sludge is preliminarily dried at the sludge drying component and finally enters the mud bar sintering component for sintering. In this solution, impurities in the sludge are removed during the process of sludge and sewage separation treatment, thereby greatly improving the treatment efficiency of the entire sewage sludge treatment system.

[0008] Preferably, the impurity cleaning component includes an impurity cleaning table and a cleaning pressing table vertically slidably arranged on the upper side of the impurity cleaning table. A filter mesh plate is vertically arranged upward at the peripheral end of the impurity cleaning table. A cleaning pressing groove for the vertical insertion of the cleaning pressing table is formed between multiple filter mesh plates. An impurity channel is vertically opened in the middle of the impurity cleaning table. An impurity receiving plate that blocks the impurity channel and is for the cleaning pressing table to slide down and abut against is rotatably arranged at the top of the impurity channel of the impurity cleaning table.

[0009] By adopting the above technical solution, when the impurities fall from the sludge receiving component, they will directly fall into the cleaning pressing groove surrounded by the impurity cleaning table and the filter mesh plate. Subsequently, the cleaning pressing table presses down vertically. Under the pressure, the sludge will be directly extruded along the mesh holes on the filter mesh plate, and the impurities with a volume larger than the mesh holes of the filter mesh plate will be left on the impurity cleaning table. Then the cleaning pressing table resets, and the impurity receiving plate flips 180 degrees, so that the impurities can directly fall into the impurity channel. This solution can effectively screen out the impurities with larger volume from the sludge and reduce the probability of the impurities affecting the treatment progress.

[0010] Preferably, an impurity crushing roller is rotatably arranged at the bottom of the impurity channel of the impurity cleaning table. An impurity conveyor belt is arranged below the impurity crushing roller. The impurity conveyor belt is horizontally connected to the outside of the impurity cleaning table. An impurity collection box for containing crushed impurities is arranged below the discharging end of the impurity conveyor belt.

[0011] By adopting the above technical solution, when large pieces of impurities fall into the impurity channel, the impurity crushing roller in the impurity channel crushes the large pieces of impurities. The crushed impurities directly fall onto the impurity conveyor belt and are then transported to the impurity collection box for collection along with the impurity conveyor belt. This enables the impurities to be collected after being separated from the sludge, facilitating subsequent unified treatment.

[0012] Preferably, the sludge receiving assembly includes a sludge receiving tray for receiving the sludge pushed down by the first sludge pushing assembly and the second sludge pushing assembly, and an accelerating feeding group arranged at one end of the sludge receiving tray away from the sewage sludge tank. The sludge receiving tray is inclined downward from the side close to the sewage sludge tank to the side away from the sewage sludge tank. The accelerating feeding group includes a feeding funnel at the bottom of the sludge receiving tray and a feeding screw rotatably arranged inside the feeding funnel.

[0013] By adopting the above technical solution, when the first sludge pushing assembly and the second sludge pushing assembly push down the sludge, the sludge will directly fall on the sludge receiving tray. The sludge receiving tray is inclined, so that the sludge will slide towards the accelerating feeding group under the action of gravity. When it slides into the feeding funnel, it is accelerated by the feeding screw, so that the sludge can directly fall into the cleaning groove, thereby improving the sludge treatment efficiency.

[0014] Preferably, the feeding funnel is rotatably connected to the lower end of the sludge receiving tray. Baffles are arranged on both sides of the feeding funnel on the upper end surface of the sludge receiving tray. A connecting plate rotatably abutted against the upper end surface of the sludge receiving tray is arranged at one end of the feeding funnel away from the feeding port. First baffle pieces are vertically arranged at the edges of the connecting plate close to the two baffles. A second baffle piece is arranged at the edge of the connecting plate away from the feeding port of the feeding funnel. The first baffle piece and the second baffle piece extend towards the side away from the upper end surface of the sludge receiving tray. The two side ends of the second baffle piece are connected to the side ends of the two first baffle pieces away from the feeding funnel. Slots for the first baffle piece and the second baffle piece to slide and insert are formed on the sludge receiving tray.

[0015] By adopting the above technical solution, the feeding funnel is rotatably connected to the lower end of the sludge receiving tray, so that when the feeding funnel discharges the sludge, the feeding funnel will rotate until the connecting plate abuts against the upper end surface of the sludge receiving tray. At this time, the discharge port of the feeding funnel will extend above the cleaning groove. When the sludge in the cleaning groove has not been completely processed, the feeding funnel can rotate to a vertical state. At this time, the connecting plate disengages from the upper end surface of the sludge receiving tray, and at the same time, the gap between the connecting plate and the sludge receiving tray will be blocked by the first baffle piece and the second baffle piece, so that the sludge on the sludge receiving tray will not affect the normal rotation of the feeding funnel, which is more convenient for the transmission of sludge.

[0016] Preferably, the sludge drying assembly includes a sludge conveyor belt disposed below the impurity cleaning assembly, a first shaping group, a second shaping group disposed above the sludge conveyor belt, and a drying plate located above the conveyor belt and passing through the entire sludge conveyor belt. The first shaping group includes first shaping plates located on both sides of the sludge conveyor belt to shape the sludge towards the middle, and a first shaping roller rotatably disposed above the sludge conveyor belt to control the height of the sludge. The second shaping group includes a second shaping roller rotatably disposed above the sludge conveyor belt to roll the sludge into a flat shape.

[0017] By adopting the above technical solution, when the sludge is extruded from the outside of the filter mesh plate, the sludge will directly fall on the sludge conveyor belt and then be conveyed along the sludge conveyor belt. When it is conveyed to the first shaping group, the sludge deforms towards the middle under the extrusion of the first shaping plates on both sides, and then becomes thinner under the extrusion of the first shaping roller. It maintains this state and moves to the second shaping group, and then is formed into a flat shape under the extrusion of the second shaping roller. During the entire extrusion and shaping process, the drying plate continuously dries and heats the sludge, so as to remove the moisture in the sludge as much as possible during the entire conveying process. This solution enables the sludge to lose moisture faster and is convenient for subsequent sintering.

[0018] Preferably, the mud strip sintering assembly includes an inclined conveying track and baking and sintering plates disposed on both sides and above the conveying track. A sintering channel is formed between the three baking and sintering plates, and the end face of the baking and sintering plate close to the conveying track is evenly provided with flame spraying nozzles.

[0019] By adopting the above technical solution, the sludge conveyor belt directly conveys the flat and long sludge to the conveying track, and the conveying track continues to convey the sludge. At the same time, the flame spraying nozzles in the baking and sintering plates spray fire on one side of the sludge for sintering. This solution makes the sintering process of the sludge continuous, thereby improving the sintering efficiency.

[0020] Preferably, an exhaust gas treatment assembly for sucking the exhaust gas overflowing from the two ends of the sintering channel is disposed on the upper end face of the top baking and sintering plate. The exhaust gas treatment assembly includes an exhaust gas treatment box disposed on the upper end face of the baking and sintering plate. The exhaust gas treatment box is respectively provided with air inlets on the upper sides of the two ends of the sintering channel. An exhaust gas channel communicating with the two ends is provided in the middle of the exhaust gas treatment box. An exhaust pipe communicating with the exhaust gas channel is disposed in the middle of the upper side end of the exhaust gas treatment box. Multiple water curtains are arranged along the length direction in the exhaust gas channel of the exhaust gas treatment box.

[0021] By adopting the above technical solution, since the sludge contains a large number of germs, a large amount of smoke will emerge when the sludge is sintered. In this solution, an exhaust gas treatment component is arranged at the upper end of the baking and sintering plate at the top, so that the smoke can directly enter the air inlet after emerging from the two openings at both ends of the sintering channel, and then enter the exhaust gas channel. During the process of the exhaust gas entering the exhaust pipe along the exhaust gas channel, the exhaust gas needs to pass through multiple water curtains, thereby absorbing some toxic substances and impurities in the exhaust gas, making the treatment system more comprehensive.

[0022] Preferably, a water storage tank is arranged at the bottom of the exhaust gas channel in the exhaust gas treatment box, and multiple rows of spray nozzles are arranged at the top of the exhaust gas channel in the exhaust gas treatment box. The water inlet end of the spray nozzle is communicated with the water storage tank.

[0023] By adopting the above technical solution, multiple rows of spray nozzles in the exhaust gas channel work, thereby forming water curtains in the exhaust gas channel. When the water curtains can directly flow into the water storage tank, the spray nozzles can suck up and spray the water in the water storage tank again, thereby forming a cycle and reducing the waste of water resources.

[0024] Preferably, the sewage and sludge pool is arranged obliquely, and the side of the bottom of the sewage and sludge pool close to the sludge receiving component is higher than the side close to the sedimentation tank.

[0025] By adopting the above technical solution, arranging the sewage and sludge pool obliquely makes the side of the sewage and sludge pool close to the sludge receiving component higher than the side close to the sedimentation tank, so that after the sewage and sludge are poured into the sewage and sludge pool, the sewage can directly flow into the sedimentation tank under the action of gravity, thus making the separation of sewage and sludge more convenient.

[0026] In summary, the beneficial technical effects of the present application are as follows:

[0027] 1. When treating sewage and sludge through this sewage and sludge treatment system, first pour the sewage and sludge into the sewage and sludge pool together. Subsequently, the sewage will directly flow into the sedimentation tank, and the sludge remaining in the sewage and sludge pool will be pushed into the sludge receiving component under the action of the first sludge pushing component. After the sewage precipitates in the sedimentation tank, some sludge will also remain at the bottom of the sedimentation tank. At this time, the second sludge pushing component is used to push the sludge towards the sludge receiving component, and the sewage will enter the sewage treatment pool for treatment. The sludge then enters the impurity cleaning component from the sludge receiving component, and the plastic, metal and other impurities in the sludge are cleaned through the impurity cleaning component. Subsequently, the sludge is preliminarily dried at the sludge drying component and finally enters the mud strip sintering component for sintering. The impurities in the sludge are removed during the process of sewage and sludge separation treatment, thereby greatly improving the treatment efficiency of the entire sewage and sludge treatment system;

[0028] 2. After the impurities fall from the sludge receiving component, they will directly fall into the cleaning groove surrounded by the impurity cleaning table and the filter screen plate. Subsequently, the cleaning press table presses down vertically. Under the pressure, the sludge will be directly extruded along the mesh holes on the filter screen plate, and the impurities with a volume larger than the mesh holes of the filter screen plate will be left on the impurity cleaning table. Then, the cleaning press table resets, and the impurity receiving plate flips 180 degrees, enabling the impurities to directly fall into the impurity channel, effectively screening out the larger impurities from the sludge and reducing the probability of impurities affecting the treatment progress.

[0029] 3. After the first sludge pushing component and the second sludge pushing component push the sludge down, the sludge will directly fall onto the sludge receiving tray. The sludge receiving tray is inclined, causing the sludge to slide towards the side of the accelerating feeding group under the action of gravity. When it slides into the feeding funnel, and then through the acceleration of the feeding screw, the sludge can directly fall into the cleaning groove, thereby improving the sludge treatment efficiency. The feeding funnel is rotatably connected to the lower end of the sludge receiving tray. When the feeding funnel discharges the sludge, the feeding funnel will rotate until the connecting plate abuts against the upper end surface of the sludge receiving tray. At this time, the discharge port of the feeding funnel will extend above the cleaning groove. When the sludge in the cleaning groove has not been completely processed, the feeding funnel can rotate to a vertical position. At this time, the connecting plate disengages from the upper end surface of the sludge receiving tray, and the gap between the connecting plate and the sludge receiving tray will be blocked by the first baffle and the second baffle, thereby preventing the sludge on the sludge receiving tray from affecting the normal rotation of the feeding funnel and making the transfer of sludge more convenient. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the mechanism of the sewage sludge treatment system;

[0031] Figure 2 It is a schematic diagram of the structures of the sewage sludge tank, sedimentation tank, sewage treatment tank, and sludge receiving component;

[0032] Figure 3 It is an exploded schematic diagram of the sewage treatment tank and the sludge receiving component;

[0033] Figure 4 It is a schematic diagram of the structures of the impurity cleaning component, sludge drying component, and mud strip sintering component;

[0034] Figure 5 It is an exploded schematic diagram of the sludge drying component and the mud strip sintering component;

[0035] Figure 6 It is a schematic diagram of the structures of the mud strip sintering component and the waste gas treatment component;

[0036] Figure 7 It is a cross-sectional view of the waste gas treatment component.

[0037] In the figure: 1. Sewage sludge tank; 2. Sedimentation tank; 3. Sewage treatment tank; 4. First sludge pushing component; 5. Second sludge pushing component; 6. Sludge receiving component; 7. Impurity cleaning component; 8. Sludge drying component; 9. Mud strip sintering component; 10. Drain hole; 11. Sludge discharge hole; 12. First cylinder; 13. First push plate; 14. Second cylinder; 15. Second push plate; 16. Third cylinder; 17. Water sealing plate; 18. Sludge receiving tray; 19. Accelerated feeding group; 20. Feeding funnel; 21. Feeding screw; 22. Baffle; 23. Connecting plate; 24. First retaining piece; 25. Second retaining piece; 26. Slot; 27. Impurity cleaning table; 28. Cleaning oil cylinder; 29. Cleaning pressing table; 30. Filter screen plate; 31. Cleaning pressing groove; 32. Impurity channel; 33. Impurity receiving plate; 34. Impurity crushing roller; 35. Impurity conveyor belt; 36. Impurity collection box; 37. Sludge conveyor belt; 38. First shaping group; 39. Second shaping group; 40. Drying plate; 41. First shaping plate; 42. First shaping roller; 43. Second shaping roller; 44. Conveyor track; 45. Baking and sintering plate; 46. Sintering channel; 47. Flame spraying nozzle; 48. Exhaust gas treatment component; 49. Exhaust gas treatment box; 50. Air inlet; 51. Exhaust gas channel; 52. Exhaust pipe; 53. Water storage tank; 54. Water spray nozzle. Detailed implementation mode

[0038] The following will further elaborate on this application in conjunction with the attached Figure 1-7 drawings.

[0039] Refer to Figure 1 , a sewage sludge treatment system, including a sewage sludge tank 1, a sedimentation tank 2 located on one side of the sewage sludge tank 1 for sewage inflow, a sewage treatment tank 3 located on the side of the sedimentation tank 2 away from the sewage sludge tank 1, a first sludge pushing component 4 located in the sewage sludge tank 1 to push the sludge away from the sedimentation tank 2, a second sludge pushing component 5 located in the sedimentation tank 2 to push the sludge away from the sewage treatment tank 3, a sludge receiving component 6 located on the side of the sewage sludge tank 1 away from the sedimentation tank 2, an impurity cleaning component 7 located on the side of the sludge receiving component 6 away from the sewage sludge tank 1, a sludge drying component 8 located on the side of the impurity cleaning component 7 away from the sludge receiving component 6, and a mud strip sintering component 9 located on the side of the sludge drying component 8 away from the sludge receiving component 6.

[0040] Refer to Figure 1 and Figure 2 , the sewage sludge tank 1 is arranged obliquely, the side of the bottom of the sewage sludge tank 1 close to the sludge receiving component 6 is higher than the side close to the sedimentation tank 2, a horizontal drain hole 10 is opened at one end of the sewage sludge tank 1 close to the sedimentation tank 2, and a plurality of sludge discharge holes 11 perpendicular to the drain hole 10 are uniformly opened at one end of the sewage sludge tank 1 close to the sludge receiving component.

[0041] The first sludge pushing assembly 4 includes a first cylinder 12 vertically fixed to the side end of the sewage sludge tank 1 by bolts, and a first push plate 13 fixed to the end of the piston rod of the first cylinder 12 by bolts and located inside the sewage sludge tank 1. The first cylinder 12 is located above the water outlet hole 10. The piston rod of the first cylinder 12 penetrates into the sewage sludge tank 1. The two side ends of the first push plate 13 are close to the two inner side walls inside the sewage sludge tank 1, and the lower side end of the first push plate 13 is close to the inner bottom wall of the sewage sludge tank 1. When the first cylinder 12 drives the first push plate 13 to move, the sludge in the sewage sludge tank 1 can be pushed out along the sludge outlet hole 11.

[0042] The sedimentation tank 2 is horizontally arranged and one end extends to the lower side of the sewage sludge tank 1. The second sludge pushing assembly 5 includes a second cylinder 14 horizontally fixed to the side end of the sedimentation tank 2 away from the sludge receiving assembly 6 by bolts, and a second push plate 15 fixed to the end of the piston rod of the second cylinder 14 by bolts and located inside the sedimentation tank 2. A water outlet hole 10 is also opened on the side end of the sedimentation tank 2 below the second cylinder 14. A third cylinder 16 is vertically fixed to the side end of the sedimentation tank 2 below the second cylinder 14 by bolts. A water sealing plate 17 for closing the water outlet hole 10 on the side end of the sedimentation tank 2 is fixed to the end of the piston rod of the third cylinder 16 by bolts.

[0043] The sewage treatment tank 3 is horizontally shaped and the middle part is directly below the water outlet hole 10 on the side end of the sedimentation tank 2.

[0044] A vertically arranged sludge outlet hole 11 is evenly opened on the side end of the sedimentation tank 2 away from the second cylinder 14. When the second cylinder 14 drives the second push plate 15 to move inside the sedimentation tank 2, the sludge can be pushed out from the sludge outlet hole 11 on the side end of the sedimentation tank 2.

[0045] See Figure 2 and Figure 3 , the sludge receiving assembly 6 includes a sludge receiving tray 18 for receiving the sludge pushed down by the first sludge pushing assembly 4 and the second sludge pushing assembly 5, and an accelerating feeding group 19 arranged at the side end of the sludge receiving tray 18 away from the sewage sludge tank 1. The side end of the sludge receiving tray 18 is welded to the side end of the sedimentation tank 2 away from the second cylinder 14 and is located below the upper and lower sludge outlet holes 11 of the sedimentation tank 2. The sludge receiving tray 18 is inclined downward from the side close to the sewage sludge tank 1 to the side away from the sewage sludge tank 1. The accelerating feeding group 19 includes a feeding funnel 20 rotatably connected to the side end of the sludge receiving tray 18 away from the sedimentation tank 2 by a rotating shaft, and a feeding screw 21 rotatably arranged in the middle of the feeding funnel 20. A motor for driving the feeding screw 21 to rotate is fixed to the side end of the feeding funnel 20 by bolts.

[0046] On the upper end surface of the sludge receiving tray 18, baffles 22 are vertically welded on both sides of the blanking funnel 20. At one end of the blanking funnel 20 close to the sludge receiving tray 18, an adapter plate 23 is welded which rotates with the blanking funnel 20 and abuts against the upper end surface of the sludge receiving tray 18. At the edges of the adapter plate 23 close to the two baffles 22, first retaining pieces 24 are vertically welded. At the edge of the adapter plate 23 far from the blanking port of the blanking funnel 20, a second retaining piece 25 is welded. The second retaining piece 25 is arc-shaped. The first retaining piece 24 and the second retaining piece 25 extend towards the side away from the upper end surface of the sludge receiving tray 18. The two side ends of the second retaining piece 25 are connected to the side ends of the two first retaining pieces 24 far from the blanking funnel 20. Slots 26 for the first retaining piece 24 and the second retaining piece 25 to slide and insert are formed on the sludge receiving tray 18.

[0047] See Figure 4 , the impurity cleaning assembly 7 includes an impurity cleaning table 27 arranged vertically, a cleaning oil cylinder 28 located above the impurity cleaning table, and a cleaning pressing table 29 fixed to the lower end of the piston rod of the cleaning oil cylinder 28 by bolts. A filter mesh plate 30 is vertically welded on the peripheral side of the impurity cleaning table 27. Small holes for the sludge to be extruded through under pressure are evenly formed on the filter mesh plate 30. A cleaning pressing groove 31 for the cleaning pressing table 29 to vertically insert is formed between multiple filter mesh plates 30. An impurity channel 32 is vertically formed in the middle of the impurity cleaning table 27. An impurity receiving plate 33 which blocks the impurity channel 32 and is for the cleaning pressing table 29 to slide down and abut against is rotatably connected to the top of the impurity channel 32 of the impurity cleaning table 27 by a rotating shaft. Press down the cleaning pressing table 29, so that the sludge is extruded along the small holes on the filter mesh plate 30 under the action of gravity, while large pieces of impurities will be left on the impurity receiving plate 33. At this time, the impurity receiving plate 33 can be rotated 180 degrees, so that the large pieces of impurities fall into the impurity channel 32.

[0048] An impurity crushing roller 34 is rotatably arranged at the bottom of the impurity channel 32 of the impurity cleaning table 27. An impurity conveyor belt 35 is arranged below the impurity crushing roller 34. The impurity conveyor belt 35 is horizontally connected to the outside of the impurity cleaning table 27. An impurity collection box 36 for containing crushed impurities is arranged below the discharging end of the impurity conveyor belt 35. The impurities falling into the impurity channel 32 will be crushed by the impurity crushing roller 34, then fall onto the impurity conveyor belt 35, and finally be transported into the impurity collection box 36. No small holes are formed on the filter mesh plate 30 on the side close to the impurity collection box 36 to prevent the sludge from falling onto the impurity conveyor belt 35.

[0049] See Figure 5, the sludge drying assembly 8 includes a sludge conveyor belt 37 arranged below the impurity cleaning assembly 7, a first shaping group 38, a second shaping group 39 arranged above the sludge conveyor belt 37, and a drying plate 40 fixed to the upper side of the conveyor belt by bolts and horizontally extending along the length direction of the sludge conveyor belt 37. The first shaping group 38 includes first shaping plates 41 fixed to the lower end surface of the drying plate 40 and located on both sides of the sludge conveyor belt 37, and a first shaping roller 42 rotatably connected between the two first shaping plates 41 by a rotating shaft. The two first shaping plates 41 gradually narrow towards the middle and then are parallel along the conveying direction of the sludge conveyor belt 37. The first shaping roller 42 is located at the position where the distance between the two first shaping plates 41 is the closest. The second shaping group 39 includes a second shaping roller 43 rotatably connected between the two parallel first shaping plates 41 by a rotating shaft. The second shaping roller 43 is located on the side of the first shaping roller 42 away from the impurity cleaning table 27.

[0050] See Figure 5 and Figure 6 , the mud strip sintering assembly 9 includes a conveying track 44 and baking and sintering plates 45 located on both sides and above the conveying track 44. One end of the conveying track 44 close to the sludge conveyor belt 37 is parallel and connected to the end of the sludge conveyor belt 37. The middle part of the conveying track 44 is twisted and inclined. The conveying track 44 includes two parallel metal plates and multiple metal rollers rotatably connected between the two metal plates by bearings. The multiple metal rollers are arranged along the length direction of the metal plates. A sintering channel 46 is formed between the three baking and sintering plates 45. The end face of the baking and sintering plate 45 close to the conveying track 44 is uniformly fixed with a flame spraying nozzle 47 by bolts.

[0051] See Figure 6 and See Figure 7 , an exhaust gas treatment assembly 48 is arranged on the upper end face of the top baking and sintering plate 45. The exhaust gas treatment assembly 48 includes an exhaust gas treatment box 49 fixed to the upper end face of the baking and sintering plate 45 by bolts. The exhaust gas treatment box 49 is provided with air inlets 50 on the upper sides of the openings at both ends of the sintering channel 46. An exhaust fan is fixed to the exhaust gas treatment box 49 at the air inlet 50 by bolts. An exhaust gas channel 51 communicating with the two ends of the opening is formed in the middle of the exhaust gas treatment box 49. An exhaust pipe 52 communicating with the exhaust gas channel 51 is welded to the middle of the upper side end of the exhaust gas treatment box 49. A water storage tank 53 is formed at the bottom of the exhaust gas channel 51 in the exhaust gas treatment box 49. Multiple rows of water spray nozzles 54 are fixed to the top of the exhaust gas treatment box 49 in the exhaust gas channel 51 by bolts. Each row of water spray nozzles 54 is communicated by a water pipe. The water pipe is inserted into the water storage tank 53 along the side wall of the exhaust gas channel 51, so that the water spray nozzles 54 can suck and spray the water in the water storage tank 53, thereby forming multiple water curtains in the exhaust gas channel 51.

[0052] The implementation principle of this embodiment is:

[0053] When treating sewage sludge through this sewage sludge treatment system, first pour the sewage sludge into the sewage sludge tank 1 together. Subsequently, the sewage will directly flow into the sedimentation tank 2, and the sludge remaining in the sewage sludge tank 1 will be pushed into the sludge receiving component 6 under the action of the first sludge pushing component 4. After the sewage settles in the sedimentation tank 2, some sludge will also remain at the bottom of the sedimentation tank 2. At this time, the second sludge pushing component 5 is used to push the sludge towards the sludge receiving component 6, and the sewage will enter the sewage treatment tank 3 for treatment. The sludge will directly fall on the sludge receiving tray 18. The sludge receiving tray 18 is inclined, so that the sludge will slide towards the accelerating blanking group 19 under the action of gravity. The blanking funnel 20 will rotate until the connecting plate 23 abuts against the upper end surface of the sludge receiving tray 18. At this time, the discharge port of the blanking funnel 20 will extend above the cleaning groove 31. When the sludge slides into the blanking funnel 20, through the acceleration of the blanking screw 21, the sludge can directly fall into the cleaning groove 31. Subsequently, the blanking funnel 20 can rotate to a vertical state. At this time, the connecting plate 23 disengages from the upper end surface of the sludge receiving tray 18, and at the same time, the gap between the connecting plate 23 and the sludge receiving tray 18 will be blocked by the first baffle 24 and the second baffle 25, so that the sludge on the sludge receiving tray 18 will not affect the normal rotation of the blanking funnel 20. The sludge directly falls into the cleaning groove 31 surrounded by the impurity cleaning table 27 and the filter mesh plate 30. Subsequently, the cleaning press table 29 presses down vertically, and the sludge will be directly extruded along the mesh holes on the filter mesh plate 30 under pressure. The impurities with a volume larger than the mesh holes of the filter mesh plate 30 will be left on the impurity cleaning table 27. Subsequently, the cleaning press table 29 returns to its original position, and the impurity receiving plate 33 rotates 180 degrees, so that the impurities can directly fall into the impurity channel 32. When large pieces of impurities fall into the impurity channel 32, the impurity crushing roller 34 in the impurity channel 32 crushes the large pieces of impurities, and the crushed impurities directly fall on the impurity conveyor belt 35. Subsequently, they are conveyed to the impurity collection box 36 for collection along with the impurity conveyor belt 35. When the sludge is extruded from the outside of the filter mesh plate 30, the sludge will directly fall on the sludge conveyor belt 37, and then be conveyed along the sludge conveyor belt 37. When it is conveyed to the first shaping group 38, the sludge deforms towards the middle under the extrusion of the two first shaping plates 41 on both sides, and then becomes thinner under the extrusion of the first shaping roller 42. It maintains this state and moves to the second shaping group 39. Subsequently, it is formed into a flat shape under the extrusion of the second shaping roller 43. During the entire extrusion and shaping process, the drying plate 40 continuously dries and heats the sludge, so as to remove as much moisture in the sludge as possible during the entire conveying process. The sludge conveyor belt 37 directly conveys the flat and long strip-shaped sludge to the conveying track 44. The conveying track 44 continues to convey the sludge. At the same time, the flame spraying nozzles 47 in the baking and sintering plate 45 spray fire on one side of the sludge to sinter it. The smoke generated during the sintering process emerges from the two openings at both ends of the sintering channel 46 and can directly enter the air inlet 50, and then enter the exhaust gas channel 51.In the process of exhaust gas entering the exhaust pipe 52 along the exhaust gas passage 51, the exhaust gas needs to pass through multiple water curtains, so as to absorb some toxic substances and impurities in the exhaust gas.

[0054] The embodiments of the specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A sewage sludge treatment system, characterized in that: It includes a sewage sludge tank (1), a sedimentation tank (2) arranged on one side of the sewage sludge tank (1) for sewage inflow, a sewage treatment tank (3) arranged on the side of the sedimentation tank (2) away from the sewage sludge tank (1), a first sludge pushing component (4) arranged in the sewage sludge tank (1) to push the sludge away from the sedimentation tank (2), a second sludge pushing component (5) arranged in the sedimentation tank (2) to push the sludge away from the sewage treatment tank (3), a sludge receiving component (6) arranged on the side of the sewage sludge tank (1) away from the sedimentation tank (2), an impurity cleaning component (7) arranged on the side of the sludge receiving component (6) away from the sewage sludge tank (1), a sludge drying component (8) arranged on the side of the impurity cleaning component (7) away from the sludge receiving component (6), and a mud bar sintering component (9) arranged on the side of the sludge drying component (8) away from the sludge receiving component (6); The impurity cleaning component (7) includes an impurity cleaning table (27) and a cleaning pressing table (29) vertically slidably arranged on the upper side of the impurity cleaning table (27). A filter screen plate (30) is vertically arranged upward at the peripheral end of the impurity cleaning table (27). A cleaning pressing groove (31) for the vertical insertion of the cleaning pressing table (29) is formed between multiple filter screen plates (30). An impurity channel (32) is vertically opened in the middle of the impurity cleaning table (27). An impurity receiving plate (33) that blocks the impurity channel (32) and is for the cleaning pressing table (29) to slide down and abut against is rotatably arranged at the top of the impurity channel (32) of the impurity cleaning table (27); The mud bar sintering component (9) includes an inclined conveying track (44) and baking and sintering plates (45) arranged on both sides and the upper side of the conveying track (44). A sintering channel (46) is formed between the three baking and sintering plates (45). The end face of the baking and sintering plate (45) close to the conveying track (44) is evenly provided with flame spraying nozzles (47).

2. The sewage sludge treatment system according to claim 1, wherein: An impurity crushing roller (34) is rotatably arranged at the bottom of the impurity channel (32) of the impurity cleaning table (27). An impurity conveyor belt (35) is arranged below the impurity crushing roller (34). The impurity conveyor belt (35) is horizontally connected to the outside of the impurity cleaning table (27). An impurity collection box (36) for containing crushed impurities is arranged below the discharging end of the impurity conveyor belt (35).

3. The sewage sludge treatment system according to claim 1, characterized in that: The sludge receiving assembly (6) includes a sludge receiving tray (18) for receiving the sludge pushed down by the first sludge pushing assembly (4) and the second sludge pushing assembly (5), and an accelerating blanking group (19) arranged at one end of the sludge receiving tray (18) away from the sewage sludge tank (1). The sludge receiving tray (18) is inclined downward from the side close to the sewage sludge tank (1) to the side away from the sewage sludge tank (1). The accelerating blanking group (19) includes a blanking funnel (20) at the bottom of the sludge receiving tray (18) and a blanking screw (21) rotatably arranged inside the blanking funnel (20).

4. The sewage sludge treatment system according to claim 3, wherein: The blanking funnel (20) is rotatably connected to the lower end of the sludge receiving tray (18). Baffles (22) are arranged on both sides of the upper end surface of the sludge receiving tray (18) at the two sides of the blanking funnel (20). An adapter plate (23) rotatably abutted against the upper end surface of the sludge receiving tray (18) is arranged at one end of the blanking funnel (20) away from the blanking opening. First retaining pieces (24) are vertically arranged at the edges of the adapter plate (23) close to the two baffles (22). A second retaining piece (25) is arranged at the edge of the adapter plate (23) away from the blanking opening of the blanking funnel (20). The first retaining piece (24) and the second retaining piece (25) extend to the side away from the upper end surface of the sludge receiving tray (18). The two side ends of the second retaining piece (25) are connected to one side end of the two first retaining pieces (24) away from the blanking funnel (20). Slots (26) for the first retaining piece (24) and the second retaining piece (25) to slide and insert are formed in the sludge receiving tray (18).

5. The sewage sludge treatment system according to claim 1, characterized in that: The sludge drying assembly (8) includes a sludge conveyor belt (37) arranged below the impurity cleaning assembly (7), a first shaping group (38), a second shaping group (39) arranged above the sludge conveyor belt (37), and a drying plate (40) located above the conveyor belt and penetrating through the entire sludge conveyor belt (37). The first shaping group (38) includes first shaping plates (41) arranged on both sides of the sludge conveyor belt (37) to shape the sludge towards the middle and a first shaping roller (42) rotatably arranged above the sludge conveyor belt (37) to control the height of the sludge. The second shaping group (39) includes a second shaping roller (43) rotatably arranged above the sludge conveyor belt (37) to roll the sludge into a flat shape.

6. The sewage sludge treatment system according to claim 1, wherein: An exhaust gas treatment component (48) for sucking the exhaust gas overflowing from the two openings at both ends of the sintering channel (46) is arranged on the upper end surface of the baking and sintering plate (45) described above. The exhaust gas treatment component (48) includes an exhaust gas treatment box (49) arranged on the upper end surface of the baking and sintering plate (45). The exhaust gas treatment box (49) is respectively provided with air inlets (50) on the upper sides of the two openings at both ends of the sintering channel (46). An exhaust gas channel (51) communicating with the two openings is provided in the middle of the exhaust gas treatment box (49). An exhaust pipe (52) communicating with the exhaust gas channel (51) is arranged in the middle of the upper side end of the exhaust gas treatment box (49). A plurality of water curtains are arranged in the exhaust gas treatment box (49) along the length direction in the exhaust gas channel (51).

7. The sewage sludge treatment system according to claim 6, wherein: The exhaust gas treatment box (49) is provided with a water storage tank (53) at the bottom of the exhaust gas channel (51). A plurality of rows of spray nozzles (54) are arranged at the top of the exhaust gas channel (51) of the exhaust gas treatment box (49). The water inlet ends of the spray nozzles (54) are communicated with the water storage tank (53).

8. The sewage sludge treatment system according to claim 1, characterized in that: The sewage and sludge tank (1) is arranged obliquely. One side of the bottom of the sewage and sludge tank (1) close to the sludge receiving component (6) is higher than the side close to the sedimentation tank (2).

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