A sludge concentration treatment device in sewage treatment and a method of using the same

Abstract

The present application relates to mud concentration technical field, disclose a kind of mud concentration treatment device and its use method in sewage treatment, including the side plate for support, side plate has two and is parallelly arranged, further include: annular filter screen, annular filter screen is set between two side plates, and annular filter screen can rotate;Water filter mechanism, water filter mechanism has two, two water filter mechanism process set on two side plates, and water filter mechanism is used to carry out preliminary filtration to mud.The present application repeatedly extrudes and loosens mud by annular filter screen when mud is transported, guarantees the water filtering effect of mud, in addition, annular filter screen repeatedly relaxes and tension, realizes its own vibration, it is helpful to the mud adhered to annular filter screen itself is bounced, avoid the situation that annular filter screen is blocked and cannot filter water occurs, improve the effect of annular filter screen self-cleaning, guarantee the stable and smooth operation of equipment.

Description

Technical Field

[0001] This invention relates to the field of mud thickening technology, and more particularly to a mud thickening treatment device and its usage method in wastewater treatment. Background Technology

[0002] With the increasing number of wastewater treatment plants, sludge treatment has become a critical issue. The sludge produced by wastewater treatment plants contains a large amount of organic matter, pathogens, heavy metals, and harmful chemicals. If it is directly landfilled or discharged indiscriminately, it will pollute the soil, groundwater, and air. Therefore, it is necessary to use thickening devices to remove water from the sludge, significantly reduce the volume of the sludge, and reduce the risk of secondary pollution during subsequent transportation and disposal. The thickened and dewatered sludge can be converted into biogas (a renewable energy source) through anaerobic digestion or made into organic fertilizer for soil improvement, promoting resource recycling, reducing the accumulation of sludge in the environment and its pollution of the land, and reducing the negative impact on the natural environment.

[0003] For example, the sludge thickening device for sewage treatment disclosed in announcement number CN119750875B can thicken sludge, but when filtering water from the sludge, it does not have the function of repeatedly squeezing and loosening the sludge for efficient water filtration, resulting in poor water filtration effect and poor sludge thickening effect, which reduces the effectiveness of use. Therefore, there is an urgent need to design a sludge thickening device for sewage treatment. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art, and to propose a mud thickening treatment device and its usage method in sewage treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A sludge thickening device for wastewater treatment includes two parallel side plates for support, and further includes: A ring-shaped filter screen is located between two side plates and is rotatable. There are two water filtration mechanisms, which are set on two side plates and are used to perform preliminary filtration of the mud. The water filtration mechanism includes: The strip-shaped blocks are located on the side of the side plate. On the opposite sides of the strip-shaped blocks, second telescopic rods are rotatably installed. Straight springs are sleeved on the surface of the second telescopic rods, and the two ends of the straight springs are respectively fixedly installed at the fixed end and the telescopic end of the second telescopic rods. At the far ends of the two second telescopic rods, there are fixing blocks fixed to the outside of the side plate. The fixing blocks are used to limit and support the second telescopic rods. The strip-shaped blocks, second telescopic rods and straight springs work together to reciprocate the tensioning and relaxation of the annular filter screen for slurry filtration.

[0006] As a further technical solution of the present invention, two parallel thickening belts are horizontally rotatably installed between the two side plates. Each thickening belt has a second round roller at both ends, and two rotating motors are installed on the outer side of the corresponding side plates. The output shafts of the two rotating motors are respectively installed on the two corresponding second round rollers.

[0007] As a further technical solution of the present invention, a pad is horizontally provided between the upper and lower horizontal edges of each thickening belt, and the pad is fixedly installed between the two side plates. The pad is used to compress and concentrate the filtered mud by the thickening belt.

[0008] As a further technical solution of the present invention, a connecting plate is fixedly installed between the two side plates, and the two ends of the connecting plate abut against the surface of the annular filter screen and the surface of the lower thickening belt, respectively. The connecting plate is used to transfer the mud on the annular filter screen to the two thickening belts for compression.

[0009] As a further technical solution of the present invention, the water filtration mechanism further includes: a tension roller and two first circular rollers, the tension roller and the two first circular rollers are used to support the annular filter screen, the two first circular rollers are arranged in parallel and are rotatably arranged between two side plates, each side plate has a through vertical groove, the end of the strip block passes through the corresponding vertical groove and slides inside the vertical groove, and the tension roller is rotatably installed between the two strip blocks.

[0010] As a further technical solution of the present invention, a matching grooved wheel and a drive wheel are rotatably installed on the outer side of the side plate, the grooved wheel and the drive wheel forming a grooved wheel mechanism, a second pulley is fixedly installed at the center of the end face of the drive wheel, and a first pulley is rotatably installed on the corresponding outer side of the side plate, a first belt is sleeved on the surface of the first pulley and the second pulley, and the end face of the first pulley is fixedly installed at the center of the end face of the corresponding first roller through a connecting shaft.

[0011] As a further technical solution of the present invention, a large pulley is fixedly installed at the center of the end face of the grooved wheel, and a small pulley is rotatably installed on the side of the side plate. A second belt is sleeved on the surface of the large pulley and the small pulley. When the large pulley rotates 90 degrees, the small pulley will rotate half a turn. A turntable is fixedly installed at the center of the end face of the small pulley. A movable rod is rotatably installed on the outer edge of the turntable. A U-shaped plate is rotatably installed at the end of the movable rod. A first cylinder and a second cylinder are fixedly installed on the lower horizontal edge and the upper horizontal edge of the U-shaped plate, respectively. The first cylinder and the second cylinder are used to push the strip block to move.

[0012] As a further technical solution of the present invention, a U-shaped frame is provided at the bottom of the two side plates, and the two ends of the U-shaped frame are respectively fixedly installed at the bottom of the lower horizontal edge of the two U-shaped plates. Two first telescopic rods are vertically installed at the top of the horizontal edge of the U-shaped frame and respectively fixed to the bottom of the two side plates.

[0013] As a further technical solution of the present invention, a hopper is fixedly installed on the top of the two side plates and the hopper is located above the annular filter screen. A water receiving plate is also fixedly installed between the two side plates and a water leakage groove is opened in the middle of the water receiving plate. A drive motor is installed on the outer side of the corresponding side plate and the output end of the drive motor is installed at the center of the end face of the corresponding first pulley.

[0014] The beneficial effects of this invention are as follows: This invention, through the arrangement of the filtration components, ensures the filtration effect of the slurry by repeatedly squeezing and loosening the slurry during slurry transportation through the annular filter screen. In addition, the repeated relaxation and tensioning of the annular filter screen achieves its own vibration, which helps to dislodge the slurry adhering to the annular filter screen itself, avoiding the situation where the annular filter screen cannot filter water after clogging, improving the self-cleaning effect of the annular filter screen, and ensuring the stable and smooth operation of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a sludge thickening treatment device for wastewater treatment proposed in this invention; Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle; Figure 3 This is a schematic diagram of the structure of a sludge thickening treatment device in wastewater treatment proposed in this invention after removing one side plate; Figure 4 This is a side view of a mud thickening treatment device for wastewater treatment proposed in this invention. Figure 5 This is a schematic diagram of the tension roller and its connection structure in a sludge thickening treatment device for wastewater treatment proposed in this invention. Figure 6 for Figure 5 Enlarged schematic diagram of part B in the middle; Figure 7 This is a schematic diagram of the rotary table and its connection structure in a sludge thickening treatment device for wastewater treatment proposed in this invention.

[0016] In the diagram: 1. Side plate; 2. Water receiving plate; 3. Feed hopper; 4. Concentrating belt; 5. Annular filter screen; 6. Connecting plate; 7. Drive motor; 8. U-shaped frame; 9. First telescopic rod; 10. U-shaped plate; 11. First cylinder; 12. Second cylinder; 13. Turntable; 14. Movable rod; 15. Fixed block; 16. Straight spring; 17. Second telescopic rod; 18. Vertical groove; 19. Strip block; 20. First circular roller; 21. Tensioning roller; 22. Pad plate; 23. First belt; 24. Grooved wheel; 25. Drive wheel; 26. First pulley; 27. Second belt. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] 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.

[0019] Please see the appendix Figure 1 - Appendix Figure 7 A sludge thickening treatment device for wastewater treatment includes two side plates 1 for support, arranged in parallel, and also includes an annular filter screen 5 and a filtration mechanism. The annular filter screen 5 is disposed between the two side plates 1 and is rotatable. There are two filtration mechanisms disposed on the two side plates 1 and used for preliminary filtration of sludge. The filtration mechanism includes a strip block 19 located on the side of the side plate 1. A second telescopic rod 17 is rotatably mounted on the opposite side of the strip block 19. A straight spring 16 is sleeved on the surface of the second telescopic rod 17, and the two ends of the straight spring 16 are respectively fixedly mounted on the fixed end and the telescopic end of the second telescopic rod 17. Fixing blocks 15 are rotatably mounted on the outer side of the side plate 1 at the two ends of the two second telescopic rods 17. The fixing blocks 15 are used to limit and support the second telescopic rods 17. The strip block 19, the second telescopic rod 17 and the straight spring 16 cooperate to reciprocate the tensioning and relaxation of the annular filter screen 5 for sludge filtration. It can filter the mud and then squeeze it to concentrate it, ensuring the filtration effect before squeezing and concentrating the mud.

[0020] Please see the appendix Figure 1 - Appendix Figure 4 In a preferred embodiment, two parallel thickening belts 4 are horizontally rotatably installed between the two side plates 1. Each thickening belt 4 has a second round roller at both ends, and two rotating motors are installed on the outer side of the corresponding side plate 1. The output shafts of the two rotating motors are respectively installed on the two corresponding second round rollers. A pad 22 is horizontally arranged between the upper and lower horizontal edges of each thickening belt 4, and the pad 22 is fixedly installed between the two side plates 1. The pad 22 is used to compress and concentrate the filtered mud by the thickening belt 4. A connecting plate 6 is fixedly installed between the two side plates 1, and the two ends of the connecting plate 6 abut against the surface of the annular filter screen 5 and the surface of the thickening belt 4 below, respectively. The connecting plate 6 is used to transfer the mud on the annular filter screen 5 to the two thickening belts 4 for compression. The rotation of the annular filter screen 5 will cause the slurry to be transferred to the connecting plate 6, and the slurry will slide down through the connecting plate 6 to the two thickening belts 4 where it will be squeezed and drained.

[0021] Please see the appendix Figure 1 - Appendix Figure 7 In a preferred embodiment, the filtration mechanism further includes: a tension roller 21 and two first circular rollers 20, which support the annular filter screen 5. The two first circular rollers 20 are arranged in parallel and rotatably disposed between two side plates 1. Each side plate 1 has a through vertical groove 18 on its side. The end of the strip block 19 passes through the corresponding vertical groove 18 and slides inside the vertical groove 18. The tension roller 21 is rotatably mounted between the two strip blocks 19. A matching grooved wheel 24 and a drive wheel 25 are rotatably mounted on the outer side of the side plate 1. The grooved wheel 24 and the drive wheel 25 form a grooved wheel mechanism. A second pulley is fixedly mounted at the center of the end face of the drive wheel 25, and a first pulley is rotatably mounted on the outer side of the corresponding side plate 1. The first pulley 26 and the second pulley are fitted with a first belt 23. The end face of the first pulley 26 is fixedly installed at the center of the end face of the corresponding first roller 20 through a connecting shaft. A large pulley is fixedly installed at the center of the end face of the grooved wheel 24, and a small pulley is rotatably installed on the side of the side plate 1. A second belt 27 is fitted on the surface of the large pulley and the small pulley. When the large pulley rotates 90 degrees, the small pulley will rotate half a turn. A turntable 13 is fixedly installed at the center of the end face of the small pulley. A movable rod 14 is rotatably installed on the outer edge of the turntable 13. A U-shaped plate 10 is rotatably installed at the end of the movable rod 14. A first cylinder 11 and a second cylinder 12 are fixedly installed on the lower and upper horizontal sides of the U-shaped plate 10, respectively. The first cylinder 11 and the second cylinder 12 are used to push the strip block 19 to move. When the U-shaped plate 10 moves upward, it drives the first cylinder 11 to move upward, which first pushes the strip block 19 upward and causes the second telescopic rod 17 to rotate. The straight spring 16 generates elastic force, which is equivalent to storing force. When the second telescopic rod 17 is horizontal, the first cylinder 11 exerts an upward pushing force on the strip block 19. The elastic force generated by the straight spring 16 will cause the strip block 19 to accelerate upward. The accelerated upward movement of the strip block 19 will drive the tension roller 21 to accelerate upward, thereby loosening the annular filter screen 5. The mud will cause the upper horizontal edge of the annular filter screen 5 to be pressed down and deformed. After the tension roller 21 moves upward a certain distance, it suddenly accelerates upward. Due to the difference in gravity between mud and water, the mud and water will be rearranged when they fall, thus making the mud loose, which helps the annular filter screen 5 filter water and improves the water filtration effect. When the U-shaped plate 10 moves downwards, it drives the second cylinder 12 to move upwards. The second cylinder 12 moves downwards, pushing the strip block 19 downwards. Similarly, the strip block 19 will drive the tension roller 21 to move downwards first and then suddenly accelerate downwards. The accelerated downward movement of the tension roller 21 will cause the annular filter screen 5 to tighten. As the annular filter screen 5 quickly tightens from being loose, the mud is subjected to greater pressure and becomes compacted. This further enables automatic squeezing and filtration of the mud. In addition, the rapid tightening of the annular filter screen 5 will cause the mud to bounce up and fall, releasing the pressure and causing the material to loosen again, thus improving the filtration effect.

[0022] Please see the appendix Figure 1 - Appendix Figure 2 In a preferred embodiment, a U-shaped frame 8 is provided at the bottom of the two side plates 1. The two ends of the U-shaped frame 8 are respectively fixedly installed at the bottom of the lower horizontal edge of the two U-shaped plates 10. Two first telescopic rods 9 are vertically installed at the top of the horizontal edge of the U-shaped frame 8 and respectively fixed to the bottom of the two side plates 1. The U-shaped frame 8 and the first telescopic rod 9 are used to limit the movement of the two U-shaped plates 10, ensuring that the U-shaped plates 10 can only drive the first cylinder 11 and the second cylinder 12 to move up and down.

[0023] Please see the appendix Figure 1 - Appendix Figure 4 In a preferred embodiment, a hopper 3 is fixedly installed on the top of the two side plates 1, and the hopper 3 is located above the annular filter screen 5. A water receiving plate 2 is also fixedly installed between the two side plates 1, and a water leakage groove is opened in the middle of the water receiving plate 2. A drive motor 7 is installed on the outer side of the corresponding side plate 1, and the output end of the drive motor 7 is installed at the center of the end face of the corresponding first pulley 26. The water filtered by the annular filter screen 5 and squeezed out by the thickening belt 4 will be collected and discharged through the drain trough on the water receiving plate 2, thus completing the concentration process.

[0024] The working principle of this invention is as follows: when the mud is placed inside the feeding hopper 3, the mud inside the feeding hopper 3 will fall onto the annular filter screen 5, which can filter the water in the mud. The drive motor 7 and the rotating motor drive the first pulley 26, the first roller 20 and the second roller to rotate. The rotation of the first roller 20 drives the annular filter screen 5 to rotate, and the rotation of the second roller drives the thickening belt 4 to rotate. As the annular filter 5 rotates, it will transfer the mud to the connecting plate 6. The mud will slide down through the connecting plate 6 to the two thickening belts 4 and be squeezed out. The water filtered by the annular filter 5 and the water squeezed out by the thickening belt 4 will be collected and discharged through the water groove on the water receiving plate 2, thus completing the thickening process. During the water filtration process, the rotation of the first pulley 26 drives the second pulley to rotate via the first belt 23. The rotation of the second pulley drives the drive pulley 25 to rotate. The rotation of the drive pulley 25 drives the grooved pulley 24 to rotate intermittently. The intermittent rotation of the grooved pulley 24 drives the large pulley to rotate intermittently. The intermittent rotation of the large pulley drives the small pulley to rotate intermittently via the second belt 27. It should be noted that when the large pulley rotates 90 degrees, the small pulley will rotate half a turn. The intermittent rotation of the small pulley will drive the turntable 13 to rotate intermittently. Each time it rotates half a turn, the intermittent rotation of the turntable 13 drives the movable rod 14 to move intermittently. The intermittent movement of the movable rod 14 drives the U-shaped plate 10 and the first cylinder 11 and the second cylinder 12 on it to move intermittently up and down. When the U-shaped plate 10 moves upward, it drives the first cylinder 11 to move upward, which first pushes the strip block 19 upward and causes the second telescopic rod 17 to rotate. The straight spring 16 generates elastic force, which is equivalent to storing force. When the second telescopic rod 17 is horizontal, the first cylinder 11 exerts an upward pushing force on the strip block 19. The elastic force generated by the straight spring 16 will cause the strip block 19 to accelerate upward. The accelerated upward movement of the strip block 19 will drive the tension roller 21 to accelerate upward, thereby loosening the annular filter screen 5. The mud will cause the upper horizontal edge of the annular filter screen 5 to be pressed down and deformed. After the tension roller 21 moves upward a certain distance, it suddenly accelerates upward. Due to the difference in gravity between mud and water, the mud and water will be rearranged when they fall, thus making the mud loose, which helps the annular filter screen 5 filter water and improves the water filtration effect. When the U-shaped plate 10 moves downwards, it drives the second cylinder 12 to move upwards. The second cylinder 12 moves downwards, pushing the strip block 19 downwards. Similarly, the strip block 19 will drive the tension roller 21 to move downwards first and then suddenly accelerate downwards. The accelerated downward movement of the tension roller 21 will cause the annular filter screen 5 to tighten. As the annular filter screen 5 quickly tightens from being loose, the mud is subjected to greater pressure and becomes compacted. This further enables automatic squeezing and filtration of the mud. In addition, the rapid tightening of the annular filter screen 5 will cause the mud to bounce up and fall, releasing the pressure and causing the material to loosen again, thus improving the filtration effect. In summary, the annular filter screen 5 repeatedly squeezes and loosens the mud during mud transportation, ensuring the filtration effect of the mud. In addition, the repeated relaxation and tension of the annular filter screen 5 achieves its own vibration, which helps to bounce off the mud adhering to the annular filter screen 5, avoiding the situation where the annular filter screen 5 becomes clogged and cannot filter water, thus improving the self-cleaning effect of the annular filter screen 5. In summary, by repeating this process, the mud can be filtered and then squeezed and concentrated, ensuring the filtration effect before the mud is squeezed and concentrated, and further improving the mud concentration effect.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sludge thickening treatment device for wastewater treatment, comprising two side plates (1) for support, the side plates (1) being arranged in parallel, characterized in that, Also includes: An annular filter (5) is disposed between two side plates (1) and is rotatable. The water filtration mechanism has two parts, which are respectively set on two side plates (1) and are used to perform preliminary filtration of mud. The water filtration mechanism includes: A strip block (19) is located on the side of the side plate (1). A second telescopic rod (17) is rotatably installed on both opposite sides of the strip block (19). A straight spring (16) is sleeved on the surface of the second telescopic rod (17). The two ends of the straight spring (16) are respectively fixedly installed on the fixed end and the telescopic end of the second telescopic rod (17). A fixing block (15) fixed to the outside of the side plate (1) is rotatably installed on both ends of the two second telescopic rods (17). The strip block (19), the second telescopic rod (17) and the straight spring (16) cooperate to make the annular filter screen (5) reciprocate to tighten and loosen in order to filter mud water. Two parallel thickening belts (4) are horizontally rotatably installed between the two side plates (1). Each thickening belt (4) has a second round roller at both ends. A pad (22) is horizontally installed between the upper and lower horizontal edges of each thickening belt (4), and the pad (22) is fixedly installed between the two side plates (1). The pad (22) is used to compress and thicken the filtered mud by the thickening belt (4). A connecting plate (6) is fixedly installed between the two side plates (1), and the two ends of the connecting plate (6) abut against the surface of the annular filter screen (5) and the surface of the thickening belt (4) below, respectively. The connecting plate (6) is used to transfer the mud on the annular filter screen (5). The filter mechanism is further comprising: a tension roller (21) and two first circular rollers (20) for supporting the annular filter screen (5). The two first circular rollers (20) are arranged in parallel and rotatably disposed between two side plates (1). Each side plate (1) has a through vertical groove (18) on its side. The end of the strip block (19) passes through the corresponding vertical groove (18) and slides inside the vertical groove (18). The tension roller (21) is rotatably installed between the two strip blocks (19). A grooved wheel (24) and a drive wheel (25) are rotatably mounted on the outer side. A second pulley is fixedly mounted at the center of the end face of the drive wheel (25), and a first pulley (26) is rotatably mounted on the outer side of the corresponding side plate (1). A first belt (23) is sleeved on the surface of the first pulley (26) and the second pulley. The end face of the first pulley (26) is fixedly mounted at the center of the end face of the corresponding first roller (20) through a connecting shaft. A large pulley is fixedly mounted at the center of the end face of the grooved wheel (24), and a small pulley is rotatably mounted on the side of the side plate (1). A second belt (27) is sleeved on the surface of the large pulley and the small pulley. A rotating wheel is fixedly mounted at the center of the end face of the small pulley. The outer edge of the turntable (13) is rotatably mounted with a movable rod (14), and the end of the movable rod (14) is rotatably mounted with a U-shaped plate (10). The lower and upper horizontal sides of the U-shaped plate (10) are respectively fixedly mounted with a first cylinder (11) and a second cylinder (12), and the first cylinder (11) and the second cylinder (12) are used to push the strip block (19) to move. The bottom of the two side plates (1) is provided with a U-shaped frame (8), and the two ends of the U-shaped frame (8) are respectively fixedly mounted at the bottom of the lower horizontal side of the two U-shaped plates (10). The top of the horizontal side of the U-shaped frame (8) is vertically mounted with two first telescopic rods (9) respectively fixed at the bottom of the two side plates (1).

2. The sludge thickening device for wastewater treatment according to claim 1, characterized in that, A hopper (3) is fixedly installed on the top of the two side plates (1), and the hopper (3) is located above the annular filter screen (5). A water receiving plate (2) is also fixedly installed between the two side plates (1), and a water leakage groove is opened in the middle of the water receiving plate (2).

3. A method of using a sludge thickening treatment device in wastewater treatment, characterized in that, The sludge thickening treatment device for wastewater treatment according to any one of claims 1-2 is adopted.

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